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CDP & LLDP Questions 2

November 25th, 2019 Go to comments

Question 1

Explanation

Cisco Discovery Protocol Version 2 has three additional type, length, values (TLVs): VTP Management Domain Name, Native VLAN, and full/half-Duplex.

Question 2

Explanation

The default CDP timer (the frequency a router sends CDP packets) is 60 seconds and the hold time (the amount of time a receiving device retains the CDP information sent by other devices) is 180 seconds. In this case the question wants to ask about CDP timer. Therefore half of the default CDP timer is 30 seconds.

Question 3

Question 4

Question 5

Question 6

Question 7

Explanation

The information contained in Cisco Discovery Protocol advertisements varies based on the type of device and the installed version of the operating system. Some of the information that Cisco Discovery Protocol can learn includes:
+ Cisco IOS version running on Cisco devices
+ Hardware platform of devices
+ IP addresses of interfaces on devices
+ Locally connected devices advertising Cisco Discovery Protocol
+ Interfaces active on Cisco devices, including encapsulation type
+ Hostname
+ Duplex setting
+ VLAN Trunking Protocol (VTP) domain
+ Native VLAN

Reference: http://www.cisco.com/c/en/us/td/docs/ios-xml/ios/cdp/configuration/15-mt/cdp-15-mt-book/nm-cdp-discover.html

Question 8

Explanation

You must enable CDP on the switch port connected to the Cisco IP Phone to send the configuration to the phone (which includes the Voice VLAN to be used).

Question 9

Question 10

Explanation

By default:
+ The LLDP hold time is 120 seconds
+ The LLDP timer is 30 seconds
+ The LLDP reinitialisation delay is 2 seconds
+ The LLDP interface state is disabled
+ The LLDP global state is disabled

Reference: https://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst3750x_3560x/software/release/15-2_4_e/configurationguide/b_1524e_consolidated_3750x_3560x_cg/b_1524e_consolidated_3750x_3560x_cg_chapter_010011.html

Comments
  1. ONEWAY
    January 26th, 2020

    Guys, I’m a bit confused! As all are talking about q12? but I can see only till q10.

  2. King in the Castle
    February 10th, 2020

    Q5 is

    Which two statements about frame LLDP is true?
    A . Frame has destination multicast address
    B . LLDP frame is compatible with CDP v2
    C . Frame has CRC
    D . LLDP multicast address is 0100-0CCC-CCCC
    E . Can’t be used for POE negotiation

    @certprepare Please update your options

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