CDP & LLDP Questions 2
Question 1
Which statement about using native VLANs to carry untagged frames is true?
A. Cisco Discovery Protocol version 2 carries native VLAN information, but version 1 does not.
B. Cisco Discovery Protocol version 1 carries native VLAN information, but version 2 does not.
C. Cisco Discovery Protocol version 1 and version 2 carry native VLAN information.
D. Cisco Discovery Protocol version 3 carries native VLAN information, but versions 1 and 2 do not.
Answer: A
Cisco Discovery Protocol Version 2 has three additional type, length, values (TLVs): VTP Management Domain Name, Native VLAN, and full/half-Duplex.
Question 2
Refer to the exhibit.
Which configuration ensures that the Cisco Discovery Protocol packet update frequency sent from DSW1 to ALS1 is half of the default value?
A. DSW1(config)#cdp timer 90
B. DSW1(config-if)#cdp holdtime 60
C. DSW1(config)#cdp timer 30
D. DSW1(config)#cdp holdtime 90
E. DSW1(config-if)#cdp holdtime 30
F. DSW1(config-if)#cdp timer 60
Answer: C
السؤال ينص على ان ALS1 لديه نصف القيمة الفتراضية لـ CDP وبما أن القيمة اﻷفتراضية 60 فنصفها 30 لذلك يجب أن يكون DSW1 أيضا لدية 30
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
Which two statements apply to LLDP?
A. It runs on the data link layer
B. It runs on the network layer
C. It is not enabled by default on Cisco devices
D. Enabled on Cisco devices by default
Answer: A C
بروتوكول LLDP يعمل على الطبقة الثانية Data Link وبما أنه بروتوكول عام فيكون غير مفعل على أجهزة سيسكو بشكل افتراضي
Question 4
Which two statements about CDP are true? (Choose two)
A. CDP uses a TLV to advertise the native VLAN
B. CDP is not supported with SNMP
C. CDP is supported on Frame Relay sub interfaces
D. CDP runs on OSI layer 2
E. CDP runs on OSI layer 1
Answer: A D
Cisco Discovery Protocol Version 2 has three additional type, length, values (TLVs): VTP Management Domain Name, Native VLAN, and full/half-Duplex.
يتم إعلان كلا من VTP و Native VLAN و Duplex باستخجام TLVs
بروتوكول CDP يعمل في الطبقة الثانية
Question 5
Which two statements about frame LLDP is true?
A. Frame has destination multicast address
B. ?
C. Frame has CRC
D. ?
Answer: A C
بروتوكول LLDP وكذلك CDP كلاهما يستخدمان multicast address
وبما أن بروتوكول LLDP في الطبقة الثانية فهو ينتقل على شكل frame وهكذا يحتوي على CRC
Question 6
Which information does CDP supply from connected devices? (Choose three)
A. Hardware Platform
B. Interface ID
C. Hostname
D. Config Register
Answer: A B C
Question 7
Which option lists the information that is contained in a Cisco Discovery Protocol advertisement?
A. native VLAN IDs, port-duplex, hardware platform
B. native VLAN IDs, port-duplex, memory errors
C. native VLAN IDs, memory errors, hardware platform
D. port-duplex, hardware platform, memory errors
Answer: A
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
Question 8
What feature carries information about the Voice VLAN to a Cisco Phone?
A. SIP
B. LLDP
C. CDP
D. Skinny Client Control Protocol (SCCP)
Answer: C
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
Which two pieces of information are carried in a Cisco Discovery Protocol advertisement? (Choose two)
A. Processor Type
B. VTP domain name
C. Routing protocol
D. Memory usage
E. Spanning-Tree mode
F. native VLAN-ID
Answer: B F
Question 10
Which two settings are part of a default LLDP configuration? (Choose two)
A. The LLDP hold time is 60 seconds
B. The LLDP global state is disabled
C. The LLDP reinitialisation delay is 5 seconds
D. The LLDP interface state is disabled
E. The LLDP timer is 60 seconds
Answer: B D
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