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CCNA 3- CH. 2 Basic Switch Configuration
LAN Switching and Wireless, CCNA 3, Chapter 2- basic switch config.
17
Computer Networking
Undergraduate 1
01/17/2013

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Cards

Term
Refer to the exhibit. The network administrator has decided to allow only Secure Shell connections to Switch1. After the commands are applied, the administrator is able to connect to Switch1 using both Secure Shell and Telnet. What is most likely the problem?
Definition
missing transport input ssh command
Term
Where is the startup configuration stored?
Definition
NVRAM
Term
Refer to the exhibit. The switch and the hub have default configurations, and the switch has built its CAM table. Which of the hosts will capture a copy of the frame when workstation A sends a unicast packet to workstation C?
Definition
workstation C
Term
Refer to the exhibit. What happens when Host 1 attempts to send data?
Definition
Frames from Host 1 cause the interface to shut down.
Term
What are two ways to make a switch less vulnerable to attacks like MAC address flooding, CDP attacks, and Telnet attacks? (Choose two.)
Definition
Change passwords regularly.

Turn off unnecessary services.
Term
Which two statements are true regarding switch port security? (Choose two.)
Definition
If fewer than the maximum number of MAC addresses for a port are configured statically, dynamically learned addresses are added to CAM until the maximum number is reached.

Dynamically learned secure MAC addresses are lost when the switch reboots.
Term
Which two statements are true about EXEC mode passwords? (Choose two.)
Definition
The enable secret password command provides better security than the enable password.

The enable password and enable secret password protect access to privileged EXEC mode.
Term
When a collision occurs in a network using CSMA/CD, how do hosts with data to transmit respond after the backoff period has expired?
Definition
The hosts return to a listen-before-transmit mode.
Term
Which statement is true about the command banner login “Authorized personnel Only” issued on a switch?
Definition
The command will cause the message Authorized personnel Only to display before a user logs in.
Term
Which two statements about Layer 2 Ethernet switches are true? (Choose two.)
Definition
Layer 2 switches can send traffic based on the destination MAC address.

Layer 2 switches have multiple collision domains.
Term
Refer to the exhibit. The exhibit shows partial output of the show running-config command. The enable password on this switch is “cisco.” What can be determined from the output shown?
Definition
Any configured line mode passwords will be encrypted in this configuration.
Term
Refer to the exhibit. The switch and workstation are administratively configured for full-duplex operation. Which statement accurately reflects the operation of this link?
Definition
No collisions will occur on this link.
Term
When a switch receives a frame and the source MAC address is not found in the switching table, what action will be taken by the switch to process the incoming frame?
Definition
The switch will map the source MAC address to the port on which it was received.
Term
A network administrator uses the CLI to enter a command that requires several parameters. The switch responds with “% Incomplete command”. The administrator cannot remember the missing parameters. What can the administrator do to get the parameter information?
Definition
append a space and then ? to the last parameter
Term
What happens when the transport input ssh command is entered on the switch vty lines?
Definition
Communication between the switch and remote users is encrypted.
Term
Which command line interface (CLI) mode allows users to configure switch parameters, such as the hostname and password?
Definition
global configuration mode
Term
If a network administrator enters these commands on a switch, what will be the result?
Switch1(config-line)# line console 0
Switch1(config-line)# password cisco
Switch1(config-line)# login
Definition
to gain access to line configuration mode by supplying the required password
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