CCNA 640-802 Bible - Verify Device Configuration and Network Connectivity

1. Refer to the exhibit. What is the effect of the configuration that is shown?

A: It configures SSH globally for all logins.

B: It tells the router or switch to try to establish an SSh connection first and if that fails to use Telnet.

C: It configures the virtual terminal lines with the password 030752180500.

D: It configures a Cisco network device to use the SSH protocol on incoming communications via the virtual terminal ports.

E: It allows seven failed login attempts before the VTY lines are temporarily shutdown.

Correct Answers: D

2. This graphic shows the results of an attempt to open a Telnet connection to router ACCESS1 from router Remote27. Which of the following command sequences will correct this problem?

A: ACCESS1(config)# line console 0

ACCESS1(config-line)# password cisco

B: Remote27(config)# line console 0

Remote27(config-line)# login

Remote27(config-line)# password cisco

C: ACCESS1(config)# line vty 0 4

ACCESS1(config-line)# login

ACCESS1(config-line)# password cisco

D: Remote27(config)# line vty 0 4

Remote27(config-line)# login

Remote27(config-line)# password cisco

E: ACCESS1(config)# enable password cisco

F: Remote27(config)# enable password cisco

Correct Answers: C

3. Refer to the exhibit. A technician is troubleshooting a host connectivity problem. The host is unable to ping a server connected to Switch_A. Based on the results of the testing, what could be the problem?

A: A remote physical layer problem exists.

B: The host NIC is not functioning.

C: TCP/IP has not been correctly installed on the host.

D: A local physical layer problem exists.

Correct Answers: D

4. An administrator issues the command ping 127.0.0.1 from the command line prompt on a PC. If a reply is received, what does this confirm?

A: The PC has connectivity with a local host.

B: The PC has connectivity with a Layer 3 device.

C: The PC has a default gateway correctly configured.

D: The PC has connectivity up to Layer 5 of the OSI model.

E: The PC has the TCP/IP protocol stack correctly installed.

Correct Answers: E

Explanation:

Every Windows based PC uses the 127.0.0.1 as the local loopback IP address. Every PC will respond to this local IP address if the TCP/IP stack is correctly installed and running on the machine. If you cannot ping the loopback address of 127.0.0.1, then something is wrong with the TCP/IP protocol stack.