2-2: Basic Switching Concepts and Configuration

Question 1

The fifth step of the boot sequence is?

Answer 1

Load the IOS software

Question 2

Port Fa0/2 has already been configured appropriately. The IP phone and PC work properly. Which switch configuration would be most appropriate for port Fa0/2 if the network administrator has the following goals?

• No one is allowed to disconnect the IP phone or the PC and connect some other wired device.
• If a different device is connected, port Fa0/2 is shut down.
• The switch should automatically detect the MAC address of the IP phone and the PC and add those addresses to the running configuration.

Answer 2

SWA(config-if)# switchport port-security SWA(config-if)# switchport port-security maximum 2 SWA(config-if)# switchport port-security mac-address sticky

Question 3

The network administrator enters the following commands on a Cisco switch:

Switch(config)# interface vlan1 Switch(config-if)# ip address 192.168.1.2 255.255.255.0 Switch(config-if)# no shutdown

What is the effect of entering these commands?

Answer 3

Users on the 192.168.1.0/24 subnet are able to ping the switch at IP address 192.168.1.2.

Question 3

Which three statements are true about using full-duplex Fast Ethernet?

Answer 3

1. Performance is improved because the collision detect function is disabled on the device.
2. Performance is improved with bidirectional data flow.
3. Full-duplex Fast Ethernet offers 100 percent efficiency in both directions.

Question 3

The network administrator wants to configure Switch1 to allow SSH connections and prohibit Telnet connections. How should the network administrator change the displayed configuration to satisfy the requirement?

Answer 3

Modify the transport input command.

Question 4

The fourth step of the boot sequence is?

Answer 4

Flash Filesystem Initilizations

Question 4

Which two statements are true regarding switch port security?

Answer 4

1. Dynamically learned secure MAC addresses are lost when the switch reboots.
2. 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.

Question 5

Which action will bring an error-disabled switch port back to an operational state?

Answer 5

Issue the shutdown and then no shutdown interface commands.

Question 5

In which type of attack does a malicious node request all available IP addresses in the address pool of a DHCP server in order to prevent legitimate hosts from obtaining network access?​

Answer 5

DHCP starvation

Question 6

Which command displays information about the auto-MDIX setting for a specific interface?​

Answer 6

Show controllers

Question 8

Which protocol or service sends broadcasts containing the Cisco IOS software version of the sending device, and the packets of which can be captured by malicious hosts on the network?

Answer 8

CDP

Question 10

The first step of the boot sequence is?

Answer 10

POST

Question 11

Which interface is the default location that would contain the IP address used to manage a 24-port Ethernet switch?

Answer 11

VLAN 1

Question 12

Which type of cable does a network administrator need to connect a PC to a switch to recover it after the Cisco IOS software fails to load?

Answer 12

A console cable

Question 12

What impact does the use of the mdix auto configuration command have on an Ethernet interface on a switch?

Answer 12

Automatically detects copper cable type

Question 13

The sixth step of the boot sequence is?

Answer 13

Transfer control of the switch over to IOS

Question 14

The second step of the boot sequence is?

Answer 14

Load the bootloader from ROM

Question 15

Which event will take place if there is a port security violation on switch S1 interface Fa0/1?

Answer 15

Packets with unknown source addresses will be dropped.

Question 17

The third step of the boot sequence is?

Answer 17

CPU register initializations

Question 18

What can be determined about port security from the information that is shown?

Answer 18

The port violation mode is the default for any port that has port security enabled.

Question 20

While troubleshooting a connectivity problem, a network administrator notices that a switch port status LED is alternating between green and amber. What could this LED indicate?

Answer 20

The port has no link.

Question 22

When port security is enabled, a switch port uses the default violation mode of ________ until specifically configured to use a different violation mode.

Answer 22

Shutdown

Question 23

A production switch is reloaded and finishes with a Switch> prompt. What two facts can be determined?

Answer 23

1. A full version of the Cisco IOS was located and loaded.
2. POST occurred normally.

Question 24

Which two basic functions are performed by network security tools?

Answer 24

1. Simulating attacks against the production network to determine any existing vulnerabilities
2. Revealing the type of information an attacker is able to gather from monitoring network traffic

Question 25

Which method would mitigate a MAC address flooding attack?

Answer 25

Configuring port security

Question 26

What media issue might exist on the link connected to Fa0/1 based on the show interface command?

Answer 26

There could be too much electrical interference and noise on the link.

Question 27

Which S1 switch port interface or interfaces should be configured with the ip dhcp snooping trust command if best practices are implemented?

Answer 27

Only the G0/1 and G0/24 ports

Question 28

___________ communication allows both ends of a connection to transmit and receive data simultaneously.

Answer 28

Full-Duplex