CCNA3 CAPTER 1

1.     Which two statements are reasons why UDP is used for voice and video traffic instead of TCP? (Choose two.) TCP requires all data packets to be delivered for the data to be usable. The acknowledgment process of TCP introduces delays that break the streams of data. UDP does not have mechanisms for retransmitting lost packets. UDP tolerates delays and compensates for them. TCP is a connectionless protocol that provides end-to-end reliability. UDP is a connection-oriented protocol that provides end-to-end reliability.

2.     Why is TCP the preferred Layer 4 protocol for transmitting data files? TCP is more reliable than UDP because it requires lost packets to be retransmitted. TCP requires less processing by the source and destination hosts than UDP. UDP introduces delays that degrade the quality of the data applications. TCP ensures fast delivery because it does not require sequencing or acknowledgements.

3.     Which two solutions would an enterprise IT department use to facilitate secure intranet access for remote workers? (Choose two.) VPN NAT user authentication client firewall software packet sniffing 4.     What is the purpose of the Cisco Enterprise Architecture? remove the three-layer hierarchical model and use a flat network approach divide the network into functional components while still maintaining the concept of Core, Distribution, and Access Layers provide services and functionality to the core layer by grouping various components into a single component located in the access layer reduce overall network traffic by grouping server farms, the management server, corporate intranet, and e-commerce routers in the same layer 5.     In which functional area of the Cisco Enterprise Architecture should IDS and IPS be located to detect and prevent malicious activity from outside? enterprise campus WAN and Internet enterprise edge service provider edge 6.     What is a benefit of having an extranet? It provides web-like access to company information for employees only. It limits access to corporate information to secure VPN or remote access connections only. It allows customers and partners to access company information by connecting to a public web server. It allows suppliers and contractors to access confidential internal information using controlled external connections. 7.     What does VoIP provide to telecommuters? high-quality, live-video presentations real-time voice communications over the Internet ability to share desktop applications simultaneously secure, encrypted data transmissions through the Internet 8.     Which functional component of the Cisco Enterprise Architecture is responsible for hosting internal servers? enterprise campus enterprise edge service provider edge building distribution 9.     Which task would typically only require services located at the access layer of the hierarchical design model? connecting to the corporate web server to update sales figures using a VPN from home to send data to the main office servers printing a meeting agenda on a local departmental network printer placing a VoIP call to a business associate in another country responding to an e-mail from a co-worker in another department 10.            What are two important characteristics or functions of devices at the Enterprise Edge? (Choose two.) providing Internet, telephone, and WAN services to the enterprise network providing a connection point for end-user devices to the enterprise network providing high-speed backbone connectivity with redundant connections providing intrusion detection and intrusion prevention to protect the network against malicious activity providing packet inspection to determine if incoming packets should be allowed on the enterprise network 11.            The ABC Corporation implements the network for its new headquarters using the Cisco Enterprise Architecture. The network administrator wants to filter the traffic from and to the outside world. Where should the administrator deploy a firewall device? server farm enterprise edge enterprise campus service provider edge 12.            Which two measures help ensure that a hardware problem does not cause an outage in an enterprise LAN that supports mission critical services? (Choose two.) providing failover capability installing redundant power supplies purchasing more bandwidth from the ISP enabling half-duplex connectivity to access layer devices installing routers that can handle a greater amount of throughput 13.            Which statement describes the difference between an enterprise WAN and an enterprise extranet? An enterprise WAN is designed to interconnect local LANs, while an enterprise extranet is designed to interconnect remote branch offices. An enterprise WAN is designed to interconnect branch offices, while an enterprise extranet is designed to give access to external business partners. An enterprise WAN is designed to provide remote access for its teleworkers, while an enterprise extranet is designed to provide Internet connectivity for the enterprise. An enterprise WAN is designed to provide Internet connectivity for the enterprise, while an enterprise extranet is designed to provide remote access to the enterprise network for teleworkers. 14.            What can be found at the enterprise edge? Internet, VPN, and WAN modules Internet, PSTN, and WAN services server farms and network management campus infrastructure, including access layer devices 15.            A remote user needs to access a networking device on the internal network of the company. The transactions between the remote user and the device must be secure. Which protocol enables this to happen securely? HTTP SSH Telnet FTP 16.            A business consultant must use Internet websites to research a report on the e-business strategies of several firms and then electronically deliver the report to a group of clients in cities throughout the world. Which two teleworker tools can the consultant use to accomplish this project? (Choose two.) VoIP VPN HTTP Telnet email 17.            How does a VPN work to support remote user productivity? It uses SSL to encrypt remote user logins to the corporate intranet. It uses secure Telnet for remote user connections to internal network devices. It creates a virtual circuit that allows real-time communications between any two Internet endpoints. It uses encapsulation to create a secure tunnel for transmission of data across non-secure networks. 18.            What is the main purpose of the Access Layer in a hierarchically designed network? performs routing and packet manipulation supplies redundancy and failover protection provides a high-speed, low-latency backbone serves as a network connection point for end-user devices 20.            What are two benefits of controlling the flow of traffic in an enterprise network? (Choose two.) security smaller failure domains more reliable transaction processing bandwidth optimization local control of network services 22.            Which three items can be discovered by using a packet sniffer application? (Choose three.) network transmission speed source IP address Ethernet frame type duplex operational status near-end crosstalk (NEXT) level TCP sequence number 23.            What are two benefits to an employee of teleworking? (Choose two.) reduced commuting costs reduced network complexity reduced need for support staff reduced need for expensive business attire reduced security risks to the network infrastructure 24.            Which protocol and process could be implemented on a network to ensure that a telecommuter can attend a training presentation via the use of VoIP and still experience uninterrupted data streams and quality conversations? TCP and QoS UDP and QoS TCP and queuing UDP and VPN TCP and VPN    1. The ABC Corporation implements the network for its new headquarters using the Cisco Enterprise Architecture. The network administrator wants to filter the traffic from and to the outside world. Where should the administrator deploy a firewall device? server farm enterprise edge enterprise campus service provider edge 2. How does a VPN work to support remote user productivity? It uses SSL to encrypt remote user logins to the corporate intranet. It uses secure Telnet for remote user connections to internal network devices. It creates a virtual circuit that allows real-time communications between any two Internet endpoints. It uses encapsulation to create a secure tunnel for transmission of data across non-secure networks. 3. In which functional area of the Cisco Enterprise Architecture should IDS and IPS be located to detect and prevent malicious activity from outside? enterprise campus WAN and Internet enterprise edge service provider edge 4. Which functional component of the Cisco Enterprise Architecture is responsible for hosting internal servers? enterprise campus enterprise edge service provider edge building distribution 5. What does VoIP provide to telecommuters? high-quality, live-video presentations real-time voice communications over the Internet ability to share desktop applications simultaneously secure, encrypted data transmissions through the Internet 6. What are two important guidelines when using packet sniffers to determine traffic flow patterns? (Choose two.) Capture only traffic from a single application at a time. Perform the capture on several different network segments. Create a baseline capture during a low or non-utilization period. Relocate highly active servers before attempting the capture. Capture traffic during peak utilization times. 7. What is the purpose of the Cisco Enterprise Architecture? remove the three-layer hierarchical model and use a flat network approach divide the network into functional components while still maintaining the concept of Core, Distribution, and Access Layers provide services and functionality to the core layer by grouping various components into a single component located in the access layer reduce overall network traffic by grouping server farms, the management server, corporate intranet, and e-commerce routers in the same layer 8. Which three items can be discovered by using a packet sniffer application? (Choose three.) network transmission speed source IP address Ethernet frame type duplex operational status near-end crosstalk (NEXT) level TCP sequence number 9. Which two statements are reasons why UDP is used for voice and video traffic instead of TCP? (Choose two.) TCP requires all data packets to be delivered for the data to be usable. The acknowledgment process of TCP introduces delays that break the streams of data. UDP does not have mechanisms for retransmitting lost packets. UDP tolerates delays and compensates for them. TCP is a connectionless protocol that provides end-to-end reliability. UDP is a connection-oriented protocol that provides end-to-end reliability. 10. What is a benefit of having an extranet? It provides web-like access to company information for employees only. It limits access to corporate information to secure VPN or remote access connections only. It allows customers and partners to access company information by connecting to a public web server. It allows suppliers and contractors to access confidential internal information using controlled external connections. 11. Which protocol and process could be implemented on a network to ensure that a telecommuter can attend a training presentation via the use of VoIP and still experience uninterrupted data streams and quality conversations? TCP and QoS UDP and QoS TCP and queuing UDP and VPN TCP and VPN 12. Which two measures help ensure that a hardware problem does not cause an outage in an enterprise LAN that supports mission critical services? (Choose two.) providing failover capability installing redundant power supplies purchasing more bandwidth from the ISP enabling half-duplex connectivity to access layer devices installing routers that can handle a greater amount of throughput 13. What are two benefits of controlling the flow of traffic in an enterprise network? (Choose two.) security smaller failure domains more reliable transaction processing bandwidth optimization local control of network services 14. Why is TCP the preferred Layer 4 protocol for transmitting data files? TCP is more reliable than UDP because it requires lost packets to be retransmitted. TCP requires less processing by the source and destination hosts than UDP. UDP introduces delays that degrade the quality of the data applications. TCP ensures fast delivery because it does not require sequencing or acknowledgements. 15. A remote user needs to access a networking device on the internal network of the company. The transactions between the remote user and the device must be secure. Which protocol enables this to happen securely? HTTP SSH Telnet FTP 16. Which statement describes the difference between an enterprise WAN and an enterprise extranet? An enterprise WAN is designed to interconnect local LANs, while an enterprise extranet is designed to interconnect remote branch offices. An enterprise WAN is designed to interconnect branch offices, while an enterprise extranet is designed to give access to external business partners. An enterprise WAN is designed to provide remote access for its teleworkers, while an enterprise extranet is designed to provide Internet connectivity for the enterprise. An enterprise WAN is designed to provide Internet connectivity for the enterprise, while an enterprise extranet is designed to provide remote access to the enterprise network for teleworkers. 17. What are two benefits to an employee of teleworking? (Choose two.) reduced commuting costs reduced network complexity reduced need for support staff reduced need for expensive business attire reduced security risks to the network infrastructure 18. What are two important characteristics or functions of devices at the Enterprise Edge? (Choose two.) providing Internet, telephone, and WAN services to the enterprise network providing a connection point for end-user devices to the enterprise network providing high-speed backbone connectivity with redundant connections providing intrusion detection and intrusion prevention to protect the network against malicious activity providing packet inspection to determine if incoming packets should be allowed on the enterprise network 19. What can be found at the enterprise edge? Internet, VPN, and WAN modules Internet, PSTN, and WAN services server farms and network management campus infrastructure, including access layer devices 20. What type of traffic flow is always considered to be external? file sharing traffic system updates company e-mail Internet bound traffic transaction processing 21. A business consultant must use Internet websites to research a report on the e-business strategies of several firms and then electronically deliver the report to a group of clients in cities throughout the world. Which two teleworker tools can the consultant use to accomplish this project? (Choose two.) VoIP VPN HTTP Telnet email 22. What is the main purpose of the Access Layer in a hierarchically designed network? performs routing and packet manipulation supplies redundancy and failover protection provides a high-speed, low-latency backbone serves as a network connection point for end-user devices 23. Which task would typically only require services located at the access layer of the hierarchical design model? connecting to the corporate web server to update sales figures using a VPN from home to send data to the main office servers printing a meeting agenda on a local departmental network printer placing a VoIP call to a business associate in another country responding to an e-mail from a co-worker in another department 24. Which two solutions would an enterprise IT department use to facilitate secure intranet access for remote workers? (Choose two.) VPN NAT user authentication client firewall software packet sniffing

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Posted in CCNA3

CCNA3 CAPTER 2

	1. Which two router parameters can be set from interface configuration mode? (Choose two.) IP address Telnet password hostname console password subnet mask enable secret password 2. An investment company has multiple servers that hold mission critical data. They are worried that if something happens to these servers, they will lose this valuable information. Which type of plan is needed for this company to help minimize loss in the event of a server crash? business security business continuity network maintenance service level agreement 3. Which three items would be found in a NOC? (Choose three.) raised floors all wireless access points network monitoring station departmental printers customer workstations data storage devices 4. What two features are true of an IDF? (Choose two.) referred to as a wiring closet located within the NOC contains access layer devices for user connectivity contains firewalls and content filtering devices alternately called an MDF 5. It is crucial that network administrators be able to examine and configure network devices from their homes. Which two approaches allow this connectivity without increasing vulnerability to external attacks? (Choose two.) Configure a special link at the POP to allow external entry from the home computer. Set up VPN access between the home computer and the network. Install a cable modem in the home to link to the network. Configure ACLs on the edge routers that allow only authorized users to access management ports on network devices. Configure a server in the DMZ with a special username and password to allow external access. 6. Which type of network map shows the location of hosts, network devices, and media? physical topology logical topology control plane business continuity 7. When searching for information about authentication methods and usernames of company personnel, where can a network administrator look? Business Continuity Plan Business Security Plan Network Maintenance Plan Service Level Agreement 8. Which two pieces of information are documented in a logical topology map? (Choose two.) physical cabling service level agreements IP addressing IDF location group usage information facility floor plans 9. Which two situations require a network administrator to use out-of-band management to change a router configuration? (Choose two.) Network links to the router are down. No Telnet password has been configured on the router. The administrator can only connect to the router using SSH. The network interfaces of the router are not configured with IP addresses. Company security policy requires that only HTTPS be used to connect to routers. 10. A Cisco router needs to be configured from a remote location by the use of out-of-band management. Which method should be used? Use Telnet or SSH and connect to an IP address of a FastEthernet port. Use HTTP to connect to an IP address on a FastEthernet port. Use dial up and a modem to connect to the auxiliary port. Use a terminal emulation program and connect to the console port. 11. A network administrator needs to configure Telnet access to a router. Which group of commands enable Telnet access to the router? Router(config)# enable password class Router(config)# line con 0 Router(config-line)# login Router(config-line)# password cisco Router(config)# ip host 192.168.1.1 NewYork Router(config)# enable password cisco Router(config)# line aux 0 Router(config-line)# login Router(config-line)# password cisco Router(config)# enable password class Router(config)# line vty 0 4 Router(config-line)# password cisco Router(config-line)# login 12. What device is responsible for moving packets to destination networks outside the local network? router switch IPS device IDS device 13. Which two items protect a corporate network against malicious attacks at the enterprise edge ? (Choose two.) point of demarcation IP security (IPSec) Data Service Unit (DSU) intrusion prevention system (IPS) intrusion detection system (IDS) 14. Which two types of information should be included in a business continuity plan? (Choose two.) maintenance time periods intrusion monitoring records offsite data storage procedures alternate IT processing locations problem resolution escalation steps 15. A network administrator must define specific business processes to implement if a catastrophic disaster prevents a company from performing daily business routines. Which portion of the network documentation is the administrator defining? business security plan business continuity plan network solvency plan service level agreement network maintenance plan 16. A network administrator has just inserted a new WIC2T controller into the first available slot of an 1841 router. The administrator needs to configure the first serial interface of this new controller. Which interface should be used? s0/0/0 s0/0/1 s1/1/0 s1/0/1 s0/1/1 17. What information can an administrator learn using the show version command? Cisco IOS filename configured routing protocol status of each interface IP addresses of all interfaces 18. A DoS attack crippled the daily operations of a large company for 8 hours. Which two options could be implemented by the network administrator to possibly prevent such an attack in the future? (Choose two.) install security devices with IDS and IPS at the enterprise edge reset all user passwords every 30 days filter packets based on IP address, traffic pattern, and protocol deny external workers VPN access to internal resources ensure critical devices are physically secure and placed behind the demarc 19. What type of connection point is a point of presence (POP)? between a client and a host between two local networks between a computer and a switch between an ISP and an Enterprise network 20. A network manager wants to have processes in place to ensure that network upgrades do not affect business operations. What will the network manager create for this purpose? business security plan business continuity plan service level agreement network maintenance plan 21. What is the maximum recommended cable length for Fast Ethernet over UTP? 50 meters 75 meters 100 meters 150 meters 22. Which two statements are true about a network operations center (NOC)? (Choose two.) Most NOCs only have tower servers or desktop servers that provide high-speed storage capabilities for thousands of clients. A NOC is typically used only to monitor and maintain the most critical network components. Because access is secured by firewalls, backup systems are not required in a NOC . Routers, high-speed switches, and servers are located within a NOC. High-speed and high-capacity data storage are important aspects of a NOC. 23. What is the demarcation? physical point where the ISP responsibility ends and the customer responsibility begins physical location where all server farm connections meet before being distributed into the Core point of entry for outside attacks and is often vulnerable point of entry for all Access Layer connections from the Distribution Layer devices

2.     Which two items protect a corporate network against malicious attacks at the enterprise edge ? (Choose two.)
	point of demarcation
	IP security (IPSec)
	Data Service Unit (DSU)
	intrusion prevention system (IPS)
	intrusion detection system (IDS)

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3.     It is crucial that network administrators be able to examine and configure network devices from their homes. Which two approaches allow this connectivity without increasing vulnerability to external attacks? (Choose two.)
	Configure a special link at the POP to allow external entry from the home computer.
	Set up VPN access between the home computer and the network.
	Install a cable modem in the home to link to the network.
	Configure ACLs on the edge routers that allow only authorized users to access management ports on network devices.
	Configure a server in the DMZ with a special username and password to allow external access.

4.     A DoS attack crippled the daily operations of a large company for 8 hours. Which two options could be implemented by the network administrator to possibly prevent such an attack in the future? (Choose two.)
	install security devices with IDS and IPS at the enterprise edge
	reset all user passwords every 30 days
	filter packets based on IP address, traffic pattern, and protocol
	deny external workers VPN access to internal resources
	ensure critical devices are physically secure and placed behind the demarc

5.     Which two pieces of information are documented in a logical topology map? (Choose two.)
	physical cabling
	service level agreements
	IP addressing
	IDF location
	group usage information
	facility floor plans

6.     Which two situations require a network administrator to use out-of-band management to change a router configuration? (Choose two.)
	Network links to the router are down.
	No Telnet password has been configured on the router.
	The administrator can only connect to the router using SSH.
	The network interfaces of the router are not configured with IP addresses.
	Company security policy requires that only HTTPS be used to connect to routers.

7.     Which type of network map shows the location of hosts, network devices, and media?
	physical topology
	logical topology
	control plane
	business continuity

8.     When searching for information about authentication methods and usernames of company personnel, where can a network administrator look?
	Business Continuity Plan
	Business Security Plan
	Network Maintenance Plan
	Service Level Agreement

9.     An investment company has multiple servers that hold mission critical data. They are worried that if something happens to these servers, they will lose this valuable information. Which type of plan is needed for this company to help minimize loss in the event of a server crash?
	business security
	business continuity
	network maintenance
	service level agreement

10.                        A network manager wants to have processes in place to ensure that network upgrades do not affect business operations. What will the network manager create for this purpose?
	business security plan
	business continuity plan
	service level agreement
	network maintenance plan

11.                        Which two types of information should be included in a business continuity plan? (Choose two.)
	maintenance time periods
	intrusion monitoring records
	offsite data storage procedures
	alternate IT processing locations
	problem resolution escalation steps

12.                        A network administrator must define specific business processes to implement if a catastrophic disaster prevents a company from performing daily business routines. Which portion of the network documentation is the administrator defining?
	business security plan
	business continuity plan
	network solvency plan
	service level agreement
	network maintenance plan

13.                        Which two router parameters can be set from interface configuration mode? (Choose two.)
	IP address
	Telnet password
	hostname
	console password
	subnet mask
	enable secret password

14.                        What information can an administrator learn using the show version command?
	Cisco IOS filename
	configured routing protocol
	status of each interface
	IP addresses of all interfaces

15.                        A network administrator has just inserted a new WIC2T controller into the first available slot of an 1841 router. The administrator needs to configure the first serial interface of this new controller. Which interface should be used?
	s0/0/0
	s0/0/1
	s1/1/0
	s1/0/1
	s0/1/1

16.                        What is the maximum recommended cable length for Fast Ethernet over UTP?
	50 meters
	75 meters
	100 meters
	150 meters

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17.                        A Cisco router needs to be configured from a remote location by the use of out-of-band management. Which method should be used?
	Use Telnet or SSH and connect to an IP address of a FastEthernet port.
	Use HTTP to connect to an IP address on a FastEthernet port.
	Use dial up and a modem to connect to the auxiliary port.
	Use a terminal emulation program and connect to the console port.

18.                        A network administrator needs to configure Telnet access to a router. Which group of commands enable Telnet access to the router?
	Router(config)# enable password class Router(config)# line con 0 Router(config-line)# login Router(config-line)# password cisco
	Router(config)# ip host 192.168.1.1 NewYork Router(config)# enable password cisco
	Router(config)# line aux 0 Router(config-line)# login Router(config-line)# password cisco
	Router(config)# enable password class Router(config)# line vty 0 4 Router(config-line)# password cisco Router(config-line)# login

19.                        What type of connection point is a point of presence (POP)?
	between a client and a host
	between two local networks
	between a computer and a switch
	between an ISP and an Enterprise network

20.                        Which two statements are true about a network operations center (NOC)? (Choose two.)
	Most NOCs only have tower servers or desktop servers that provide high-speed storage capabilities for thousands of clients.
	A NOC is typically used only to monitor and maintain the most critical network components.
	Because access is secured by firewalls, backup systems are not required in a NOC .
	Routers, high-speed switches, and servers are located within a NOC.
	High-speed and high-capacity data storage are important aspects of a NOC.

21.                        Which three items would be found in a NOC? (Choose three.)
	raised floors
	all wireless access points
	network monitoring station
	departmental printers
	customer workstations
	data storage devices

22.                        What two features are true of an IDF? (Choose two.)
	referred to as a wiring closet
	located within the NOC
	contains access layer devices for user connectivity
	contains firewalls and content filtering devices
	alternately called an MDF

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FINAL EXAM CCNA 2

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CCNA 2 CAPTER 9

1. A user can access any web page on the Internet but cannot access e-mail. What troubleshooting method would be most efficient for troubleshooting this issue?
top-down
bottom-up
divide-and-conquer
impossible to determine from this information

2. Hosts on two separate subnets cannot communicate. The network administrator suspects a missing route in one of the routing tables. Which three commands can be used to help troubleshoot Layer 3 connectivity issues? (Choose three.)
ping
show arp
traceroute
show ip route
show controllers
show cdp neighbor

3.

Refer to the exhibit. Host H1 on the LAN is not able to access the FTP server across the Internet. Which two configuration statements are causing this problem? (Choose two.)
There is no route to the Internet.
The IP address on Fa0/0 is incorrect.
The IP address on S0/0/0 is incorrect.
The NAT command on the Fa0/0 interface is applied in the wrong direction.
The NAT command on the S0/0/0 interface is applied in the wrong direction.

4.

Refer to the exhibit. Which three statements are true about the output of the show ip interface brief command? (Choose three.)
FastEthernet0/0 is functioning correctly.
The shutdown command has been applied on Serial0/0.
FastEthernet0/0 was configured by the startup-config at bootup.
Serial0/0 is experiencing a Layer 1 network problem.
FastEthernet0/1 is experiencing a Layer 2 network problem.
Because the port is down, Serial0/1 has an IP address that does not show in the output.

5. A user is having trouble accessing the Internet. A network administrator begins by verifying that the IP address of the PC is correctly configured. Next the administrator pings the default gateway. Based on this information, what type of troubleshooting method is the administrator employing?
top-down
bottom-up
divide-and-conquer
impossible to determine from this information

6. Which two conditions identify issues that are confined to Layer 1? (Choose two.)
cables that exceed maximum length
encapsulation errors
viruses and worms that create excessive broadcast traffic
poor termination of cables
receiving "line protocol down" messages on the router console

7.

Refer to the exhibit. Users on the 10.12.10.0/24 network are unable to access anyone on the 10.10.10.0/24 network. What two problems exist in the network? (Choose two.)
R2 is using a different version of RIP.
R2 has a missing network statement.
R1 has an incorrect network statement.
R3 has an incorrect network statement.
A routing loop is occurring between all three routers.

8.

Refer to the exhibit. Which statement is true regarding the IP address configuration?
Interfaces Fa0/0 and Fa0/1 can be in the same subnet.
Interface Fa0/0 and NetworkA can be in the same subnet.
Interface Fa0/0 and NetworkB can be in the same subnet.
Interface Fa0/1 and NetworkB can be in the same subnet.

9. An ISP help desk technician receives a call from a customer who reports that no one at their business can reach any websites or get their e-mail. After testing the communication line and finding everything fine, the technician instructs the customer to run nslookup from the command prompt. What does the technician suspect is causing the customer’s problem?
improper IP address configuration on the host
hardware failure of the ISR used to connect the customer to the ISP
bad cables or connections at the customer site
failure of DNS to resolve names to IP addresses

10.

Refer to the exhibit. The PC is trying to ping router B at 192.168.2.2, but it fails. What is the problem?
The PC is on the wrong subnet.
The default gateway on the PC should be 192.168.1.1.
The default gateway should be 192.168.2.2.
The DNS server is incorrect.
The IP address for Fa0/0 on router A is incorrect.

11. Which problem is associated with Layer 4 of the OSI model?
A firewall is blocking Telnet packets to a host.
A host has an incorrect IP address.
A router has no route to a host.
A host sent a malformed HTTP request.

12. How many usable host addresses does the 192.168.1.0/25 subnet provide?
254
128
127
126
64
62

13. An administrator is creating a lab to simulate a WAN connection. During the setup, the administrator notices that there are different encapsulation types on each end of the serial connection. At what layer of the OSI model is this problem occurring?
Layer 2
Layer 4
Layer 5
Layer 6

14.

Refer to the exhibit. Which IP address is misconfigured and is causing connectivity problems between hosts and servers?
HostA
HostB
Server1
Server2
R1 Fa0/0
R1 Fa0/1

15. A network technician has isolated a problem at the transport layer of the OSI model. Which question would provide further information about the problem?
Do you have a firewall that is configured on your PC?
Do you have a link light on your network card?
Is your PC configured to obtain addressing information using DHCP?
What default gateway address is configured in your TCP/IP settings?
Can you ping ccnaanswers.com?

16. A PC is able to reach devices that are located both inside and outside the network. However, when trying to reach an FTP server that is located on the same subnet, the PC fails to make a connection. The administrator has several other PCs that are located in the same subnet try a connection to the FTP server and they are successful. Which troubleshooting tool can be used to determine the problem between the PC and the FTP server?
cable tester
digital multimeter
protocol analyzer
network analyzer

17. A network administrator is upgrading a Cisco 1841 router by adding a WIC-2T module card. Which show command can the administrator use to verify that the module is correctly recognized by the router?
show flash:
show version
show ip route
show startup-configuration

18. A network administrator plugs a new PC into a switch port. The LED for that port changes to solid green. What statement best describes the current status of the port?
There is a duplex mismatch error.
There is a link fault error. This port is unable to forward frames.
The port is operational and ready to transmit packets.
This port has been disabled by management and is unable to forward frames.
The flash memory is busy.

19.

Refer to the exhibit. A network administrator is in the process of sending a preconfigured text file to a router. When the administrator pastes the configuration into the router, an error message appears. What is the problem with the IP addressing scheme?
Serial0/0 is configured with a network address.
The IP address on FastEthernet0/0 overlaps with the IP on FastEthernet0/1.
Serial0/1 is configured with a broadcast address.
The IP address on FastEthernet0/0 overlaps with the IP on Serial0/1.

20.

Refer to the exhibit. What are two possible causes for the interface status? (Choose two.)
The loopback address is not set.
The encapsulation type is mismatched.
A cable is not attached to the interface.
Keepalive messages are not being received.
The interface is administratively shut down.

. Hosts on two separate subnets cannot communicate. The network administrator suspects a missing route in one of the routing tables. Which three commands can be used to help troubleshoot Layer 3 connectivity issues? (Choose three.)
ans:
ping
traceroute
show ip route

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Posted in CCNA 2

CCNA2 CAPTER 8

1. Which benefit does SSH offer over Telnet when remotely managing a router?
*encryption
TCP usage
authorization
connection using six VTY lines

2. Which means of communication does an SNMP network agent use to provide a network management station with important but unsolicited information?
query
broadcast
ICMP ping
*trap
poll

3. What is the term used to describe the area of a network which stores servers that are accessible to any users from the Internet?
"clean" LAN
intranet
*DMZ
extranet

4. Before a technician upgrades a server, it is necessary to back up all data. Which type of backup is necessary to ensure that all data is backed up?
daily
differential
*full
incremental
partial

5. A company wants to configure a firewall to monitor all channels of communication and allow only traffic that is part of a known connection. Which firewall configuration should be deployed?
packet filtering
proxy
*stateful packet inspection
stateless packet inspection

6. Which three protocols describe methods that can be used to secure user data for transmission across the internet? (Choose three.)
SMTP
*IPSEC
*SSL
*HTTPS
FTP
TFTP

7. What network layer security protocol can secure any application layer protocol used for communication?
HTTPS
IMAP
FTPS
*IPSEC
TLS

8. Which three items are normally included when a log message is generated by a syslog client and forwarded to a syslog server? (Choose three.)
*date and time of message
*ID of sending device
length of message
*message ID
checksum field
community ID

9. What AAA component assigns varying levels of rights to users of network resources?
auditing
accounting
*authorization
access control
authentication
acknowledgement

10. A network administrator is assigning network permissions to new groups of users and employing the principle of least privilege. Which two actions should the administrator take? (Choose two.)
*Provide users with only the access to resources required to do their jobs.
*Provide the minimum level of permissions required for users to do their jobs.
Remove all permissions from the users and grant permissions as they are requested.
Allow users to decide how much permission they need to accomplish their job tasks.
Provide full access to the users and gradually remove privileges over time.

11. A hacker has gained access to sensitive network files. In analyzing the attack, it is found that the hacker gained access over a wireless segment of the network. It is further discovered that the only security measure in place on the wireless network is MAC Address Filtering. How is it likely that the hacker gained access to the network?
The hacker used a software tool to crack the shared hexadecimal wireless key.
*The hacker obtained the MAC address of a permitted host, and cloned it on his wireless laptop NIC.
The attacker mounted a denial of service attack to overwhelm the firewall before penetrating the wireless LAN.
The hacker gained wireless access to the MAC address database and added his own MAC address to the list of permitted addresses.

12. What is the advantage of using WPA to secure a wireless network?
It uses a 128-bit pre-shared hexadecimal key to prevent unauthorized wireless access.
*It uses an advanced encryption key that is never transmitted between host and access point.
It is supported on older wireless hardware, thus providing maximum compatibility with enterprise equipment.
It requires the MAC address of a network device that is requesting wireless access to be on a list of approved MAC addresses.

13. hat are two potential problems with using tape media to back up server data? (Choose two.)
Tape is not a cost-effective means of backing up data.
Data tapes are difficult to store offsite.
*Data tapes are prone to failure and must be replaced often.
*Tape drives require regular cleaning to maintain reliability.
Backup logs are not available with tape backup solutions.

14. Refer to the exhibit. While the user on router A is connected to router B through telnet, the CTRL-SHIFT-6 x keystroke is entered. What effect does this have?
It logs the user out of router A.
*It suspends the connection to router B.
It closes the connection to router B.
It logs the user out of both router A and router B.

15. What two measures help to verify that server backups have been successfully completed? (Choose two.)
*reviewing backup logs
*performing a trial restore
performing full backups only
replacing tape backup with hard disk-based backup
using an autoloader when backups require more than one tape

16. Which three applications can be used for in-band management? (Choose three.)
FTP
*HTTP
*SNMP
*Telnet
TFTP
DHCP

17. Which two characteristics of network traffic are being monitored if a network technician configures the company firewall to operate as a packet filter? (Choose two.)
*ports
physical addresses
packet size
frame sequence number
*protocols

18. Which AAA service provides detailed reporting and monitoring of network user behavior, and also keeps a record of every access connection and device configuration change across the network?
authentication
accreditation
*accounting
authorization

19. While downloading an IOS image from a TFTP server, an administrator sees long strings of exclamation marks (!) output to the console. What does this mean?
*The transfer is working.
The TFTP server is not responding.
The IOS file is corrupt and is failing the checksum verification.
There is not enough space in flash to hold the image.

20. What does the command copy flash tftp accomplish?
*It copies the IOS in flash to a TFTP server.
It copies the startup-configuration file in flash to a TFTP server.
It copies the running-configuration file in flash to a TFTP server.
It copies the configuration register settings in flash to a TFTP server.

1. Other useful questions that you might have missed here: All are correct.
   
   1 When is the use of out-of-band network management necessary?
   
   
   # when the management interface of a device is not reachable across the network
   
   
   
   2 What are two potential problems with using tape media to back up server data? (Choose two.)
   
   # Data tapes are prone to failure and must be replaced often.
   
   # Tape drives require regular cleaning to maintain reliability.

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Posted in CCNA 2