Which command will display a summary of all IPv6-enabled interfaces on a router that includes the IPv6 address and operational status?

• show ip interface brief

• show ipv6 route

• show running-config interface

• show ipv6 interface brief

Answer explanation

The command to view a summary of IPv6-enabled interfaces along with their IPv6 address and operational status is show ipv6 interface brief.

show ipv6 brief will give the same information but for IPv4. show ip route and show running-config interface will not give the information requested.

When verifying routes, what code is used to identify directly connected routes in the routing table?

• C

• D

• L

• R

Answer explanation

Directly connected routes will have a route code of "C" in the routing table.

Routes with "D" indicate an EIGRP learned route.

Routes with "L" indicate a local route.

Routes with "R" indicates a RIP-learned route.

RIP = Routing Information Protocol (First routing protocols)

Which command will display packet flow counts, collisions, and buffer failures on an interface?

• show interface

• show ip interface

• show running-config interface

Answer explanation

The show interface command will display lots of packet flow information such as counts, collisions, and buffer failures.

The show ip interface and show running-config interface commands give a lot of information as well but not packet flow information.

An IPv6-enabled interface is required to have which type of address?

• loopback

• global unicast

• link-local

• static

Answer explanation

All IPv6-enabled interfaces are required to have at least a link-local address.

If one is not manually configured, then the interface will automatically generate one.

What character is used to enable the filtering of commands?

• pipe |

• comma ,

• colon :

• semi colon ;

Answer explanation

The pipe character when used with commands enables filtering of the command input.

Which filtering expression will show all output lines starting from the line matching the filtering expression?

• section

• begin

• include

Answer explanation

While all three expressions will show all output lines starting from the line matching the filter expression.

The include expression shows all output lines that match the filter expression, and the section expression include the entire section that starts with the filter expression.

Which tasks can be accomplished by using the command history feature? (Choose two)

• View a list of commands entered in a previous session

• Recall previously entered commands

• Save command lines in a log file for future reference

• Recall up to 15 command lines by default

• Set the command history buffer size

Answer explanation

The history command allows you to view and reuse previously entered commands stored in the buffer.

It is also used to manage the buffer.

Which statement describes the system LED operation on Cisco Catalayst switches?

• If the LED is blinking green, the system is operating normally

• If the LED is blinking amber, the switch is performing POST

• If the LED is amber, the system is not powered on

• If the LED is amber, the system is receiving power but it is not functioning properly

Answer explanation

The system LED shows whether the system is receiving power and is functioning properly.

If the LED is off, the system is not powered on.

If the LED is green, the system is operating normally.

If the LED is amber, the system is receiving power but it is not functioning properly.

What type of Ethernet cable would be used to connect one switch to another switch when neither switch supports the auto-MDIX feature?

• crossover

• rollover

• straight-through

• coaxial

Answer explanation

A straight-through cable can be used to connect a computer or a router to a switch.

A rollover cable can be used to access a router or switch console line.

A coaxial cable is not used any longer in Ethernet networks, but can be found in video connections.

A crossover can can be used to connect a switch to a switch, a computer to a computer, and a router to a router.

What advantage does SSH offer over Telnet?

• connection-oriented services

• encryption

• more connection lines

• username and password authentication

Answer explanation

Both Telnet and SSH are used to remotely connect to a network device for management tasks.

However, Telnet uses plaintext communications, whereas SSH provides security for remote connections by providing encryption of all transmitted data between devices.