CCNA Ch 2 : Basic Switching Concepts and Configuration Flashcards Preview

CCNA EXAMS: Switching > CCNA Ch 2 : Basic Switching Concepts and Configuration > Flashcards

Flashcards in CCNA Ch 2 : Basic Switching Concepts and Configuration Deck (23)
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1
Q

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?

A

a console cable

2
Q

Which two [2] basic functions are performed by network security tools?

A
  1. Revealing the type of information an attacker is able to gather from monitoring network traffic
  2. simulating attacks against the production network to determine any existing vulnerabilities
3
Q

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?

A

The port is experiencing errors

4
Q

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?

A

Modify the transport input command.

5
Q

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

A
  1. Performance is improved with bidirectional data flow.
  2. Full-duplex Fast Ethernet offers 100 percent efficiency in both directions.
  3. Performance is improved because the collision detect function is disabled on the device
6
Q

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?​

A

DHCP starvation

7
Q

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?

A

CDP

8
Q

Which two [2] statements are true regarding switch port security?

A
  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.
9
Q

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.x
Switch(config-if)# no shutdown

A

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

10
Q

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.

A

SWA(config-if)# switchport port-security
SWA(config-if)# switchport port-security maximum2
SWA(config-if)# switchport port-security mac-address sticky

11
Q

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

A

Packets with unknown source addresses will be dropped.

12
Q

Which method would mitigate a MAC address flooding attack?

A

configuring port security

13
Q

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

A

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

14
Q

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

A

Full-Duplex

15
Q

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

A

Vlan 1

16
Q

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

A

Issue the shutdown and then no shutdown interface commands.

17
Q

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

A

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

18
Q

What are the six [6] steps for a a switch boot sequence

A
  1. Execute post
  2. load the boot loader from ROM
  3. CPU registers initialisation
  4. Flash File initialisation
  5. Load IOS
  6. Transfer Switch Control to IOS
19
Q

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

A

Shutdown

20
Q

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

A

only the G0/1 and G0/24 ports

21
Q

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

A

automatically detects copper cable type

22
Q

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

A

show controllers

23
Q

A production switch is reloaded and finishes with a Switch> prompt. What two facts can be determined? Choose two [2]

A
  1. A full version of the Cisco IOS was located and loaded.

2. POST occurred normally.