Cisco CCNA 200-301 CDP and LLDP Practice Test

Topic 14 focuses on CDP and LLDP for the Cisco Certified Network Associate (CCNA) certification and the 200-301 exam, using Cisco networking and Cisco IOS concepts where relevant. For broader exam preparation, review the Cisco CCNA 200-301 Exam Dumps page. Each question includes a concise explanation of the correct answer and the technical reason the other choices are incorrect.

Question 1

Which term describes cisco Discovery Protocol, a Cisco-proprietary Layer 2 discovery protocol used to advertise device information to directly connected neighbors?

1. show lldp neighbors
2. LLDP
3. Holdtime
4. CDP

Correct Answer: D

 

Correct Answer

Answer D is correct because Cisco Discovery Protocol, a Cisco-proprietary Layer 2 discovery protocol used to advertise device information to directly connected neighbors.

Incorrect Answers

Answer A is incorrect because the “show lldp neighbors” option describes a different concept: a Cisco IOS command that summarizes directly connected LLDP neighbors.

Answer B is incorrect because the “LLDP” option describes a different concept: Link Layer Discovery Protocol, an open-standard Layer 2 discovery protocol for directly connected neighbors.

Answer C is incorrect because the “Holdtime” option describes a different concept: the period for which learned discovery information remains valid without a fresh advertisement.

 

Question 2

Which term describes link Layer Discovery Protocol, an open-standard Layer 2 discovery protocol for directly connected neighbors?

1. Neighbor
2. Device capability
3. show lldp neighbors
4. LLDP

Correct Answer: D

 

Correct Answer

Answer D is correct because it describes Link Layer Discovery Protocol, an open-standard Layer 2 discovery protocol for directly connected neighbors.

Incorrect Answers

Answer A is incorrect because the “Neighbor” option describes a different concept: a directly connected device discovered through CDP or LLDP advertisements.

Answer B is incorrect because the “Device capability” option describes a different concept: Discovery information indicating functions such as router, switch, phone, or wireless access point.

Answer C is incorrect because the “show lldp neighbors” option describes a different concept: a Cisco IOS command that summarizes directly connected LLDP neighbors.

 

Question 3

Which directly is connected device discovered through CDP or LLDP advertisements?

1. Neighbor
2. show lldp neighbors
3. Device capability
4. TLV

Correct Answer: A

 

Correct Answer

Answer A is correct because the selected answer describes a directly connected device discovered through CDP or LLDP advertisements.

Incorrect Answers

Answer B is incorrect because the “show lldp neighbors” option describes a different concept: a Cisco IOS command that summarizes directly connected LLDP neighbors.

Answer C is incorrect because the “Device capability” option describes a different concept: Discovery information indicating functions such as router, switch, phone, or wireless access point.

Answer D is incorrect because the “TLV” option describes a different concept: a type-length-value data element used by discovery protocols to carry specific pieces of information.

 

Question 4

Which term describes discovery information identifying the neighbor interface connected to the local device?

1. Port ID
2. CDP
3. Local interface
4. LLDP

Correct Answer: A

 

Correct Answer

Answer A is correct because it describes discovery information identifying the neighbor interface connected to the local device.

Incorrect Answers

Answer B is incorrect because the “CDP” option describes a different concept: Cisco Discovery Protocol, a Cisco-proprietary Layer 2 discovery protocol used to advertise device information to directly connected neighbors.

Answer C is incorrect because the “Local interface” option describes a different concept: the interface on the local device through which a discovered neighbor is reached.

Answer D is incorrect because the “LLDP” option describes a different concept: Link Layer Discovery Protocol, an open-standard Layer 2 discovery protocol for directly connected neighbors.

 

Question 5

Which term describes discovery information indicating functions such as router, switch, phone, or wireless access point?

1. Holdtime
2. Device capability
3. show cdp neighbors
4. Local interface

Correct Answer: B

 

Correct Answer

Answer B is correct because it describes discovery information indicating functions such as router, switch, phone, or wireless access point.

Incorrect Answers

Answer A is incorrect because the “Holdtime” option describes a different concept: the period for which learned discovery information remains valid without a fresh advertisement.

Answer C is incorrect because the “show cdp neighbors” option describes a different concept: a Cisco IOS command that summarizes directly connected CDP neighbors.

Answer D is incorrect because the “Local interface” option describes a different concept: the interface on the local device through which a discovered neighbor is reached.

 

Question 6

What is the period for which learned discovery information remains valid without a fresh advertisement?

1. Port ID
2. LLDP
3. Holdtime
4. Local interface

Correct Answer: C

 

Correct Answer

Answer C is correct because the selected answer describes the period for which learned discovery information remains valid without a fresh advertisement.

Incorrect Answers

Answer A is incorrect because the “Port ID” option describes a different concept: Discovery information identifying the neighbor interface connected to the local device.

Answer B is incorrect because the “LLDP” option describes a different concept: Link Layer Discovery Protocol, an open-standard Layer 2 discovery protocol for directly connected neighbors.

Answer D is incorrect because the “Local interface” option describes a different concept: the interface on the local device through which a discovered neighbor is reached.

 

Question 7

Which Cisco IOS command summarizes directly connected CDP neighbors?

1. CDP
2. LLDP
3. Holdtime
4. show cdp neighbors

Correct Answer: D

 

Correct Answer

Answer D is correct because the selected answer describes a Cisco IOS command that summarizes directly connected CDP neighbors.

Incorrect Answers

Answer A is incorrect because the “CDP” option describes a different concept: Cisco Discovery Protocol, a Cisco-proprietary Layer 2 discovery protocol used to advertise device information to directly connected neighbors.

Answer B is incorrect because the “LLDP” option describes a different concept: Link Layer Discovery Protocol, an open-standard Layer 2 discovery protocol for directly connected neighbors.

Answer C is incorrect because the “Holdtime” option describes a different concept: the period for which learned discovery information remains valid without a fresh advertisement.

 

Question 8

Which Cisco IOS command summarizes directly connected LLDP neighbors?

1. TLV
2. Neighbor
3. CDP
4. show lldp neighbors

Correct Answer: D

 

Correct Answer

Answer D is correct because the selected answer describes a Cisco IOS command that summarizes directly connected LLDP neighbors.

Incorrect Answers

Answer A is incorrect because the “TLV” option describes a different concept: a type-length-value data element used by discovery protocols to carry specific pieces of information.

Answer B is incorrect because the “Neighbor” option describes a different concept: a directly connected device discovered through CDP or LLDP advertisements.

Answer C is incorrect because the “CDP” option describes a different concept: Cisco Discovery Protocol, a Cisco-proprietary Layer 2 discovery protocol used to advertise device information to directly connected neighbors.

 

Question 9

Which type-length-value data element is used by discovery protocols to carry specific pieces of information?

1. Local interface
2. TLV
3. Device capability
4. CDP

Correct Answer: B

 

Correct Answer

Answer B is correct because the selected answer describes a type-length-value data element used by discovery protocols to carry specific pieces of information.

Incorrect Answers

Answer A is incorrect because the “Local interface” option describes a different concept: the interface on the local device through which a discovered neighbor is reached.

Answer C is incorrect because the “Device capability” option describes a different concept: Discovery information indicating functions such as router, switch, phone, or wireless access point.

Answer D is incorrect because the “CDP” option describes a different concept: Cisco Discovery Protocol, a Cisco-proprietary Layer 2 discovery protocol used to advertise device information to directly connected neighbors.

 

Question 10

What is the interface on the local device through which a discovered neighbor is reached?

1. Neighbor
2. CDP
3. Local interface
4. Holdtime

Correct Answer: C

 

Correct Answer

Answer C is correct because the selected answer describes the interface on the local device through which a discovered neighbor is reached.

Incorrect Answers

Answer A is incorrect because the “Neighbor” option describes a different concept: a directly connected device discovered through CDP or LLDP advertisements.

Answer B is incorrect because the “CDP” option describes a different concept: Cisco Discovery Protocol, a Cisco-proprietary Layer 2 discovery protocol used to advertise device information to directly connected neighbors.

Answer D is incorrect because the “Holdtime” option describes a different concept: the period for which learned discovery information remains valid without a fresh advertisement.

 

Question 11

For CDP, which statement is accurate?

1. A type-length-value data element used by discovery protocols to carry specific pieces of information.
2. Cisco Discovery Protocol, a Cisco-proprietary Layer 2 discovery protocol used to advertise device information to directly connected neighbors.
3. A Cisco IOS command that summarizes directly connected LLDP neighbors.
4. Link Layer Discovery Protocol, an open-standard Layer 2 discovery protocol for directly connected neighbors.

Correct Answer: B

 

Correct Answer

Answer B is correct because the choice accurately describes CDP: Cisco Discovery Protocol, a Cisco-proprietary Layer 2 discovery protocol used to advertise device information to directly connected neighbors.

Incorrect Answers

Answer A is incorrect because the “TLV” option describes a different concept: a type-length-value data element used by discovery protocols to carry specific pieces of information.

Answer C is incorrect because the “show lldp neighbors” option describes a different concept: a Cisco IOS command that summarizes directly connected LLDP neighbors.

Answer D is incorrect because the “LLDP” option describes a different concept: Link Layer Discovery Protocol, an open-standard Layer 2 discovery protocol for directly connected neighbors.

 

Question 12

For LLDP, which statement is accurate?

1. Discovery information indicating functions such as router, switch, phone, or wireless access point.
2. A directly connected device discovered through CDP or LLDP advertisements.
3. Link Layer Discovery Protocol, an open-standard Layer 2 discovery protocol for directly connected neighbors.
4. Discovery information identifying the neighbor interface connected to the local device.

Correct Answer: C

 

Correct Answer

Answer C is correct because it describes Link Layer Discovery Protocol, an open-standard Layer 2 discovery protocol for directly connected neighbors.

Incorrect Answers

Answer A is incorrect because the “Device capability” option describes a different concept: Discovery information indicating functions such as router, switch, phone, or wireless access point.

Answer B is incorrect because the “Neighbor” option describes a different concept: a directly connected device discovered through CDP or LLDP advertisements.

Answer D is incorrect because the “Port ID” option describes a different concept: Discovery information identifying the neighbor interface connected to the local device.

 

Question 13

For Neighbor, which statement is accurate?

1. A directly connected device discovered through CDP or LLDP advertisements.
2. A Cisco IOS command that summarizes directly connected LLDP neighbors.
3. Discovery information indicating functions such as router, switch, phone, or wireless access point.
4. A Cisco IOS command that summarizes directly connected CDP neighbors.

Correct Answer: A

 

Correct Answer

Answer A is correct because the selected answer describes a directly connected device discovered through CDP or LLDP advertisements.

Incorrect Answers

Answer B is incorrect because the “show lldp neighbors” option describes a different concept: a Cisco IOS command that summarizes directly connected LLDP neighbors.

Answer C is incorrect because the “Device capability” option describes a different concept: Discovery information indicating functions such as router, switch, phone, or wireless access point.

Answer D is incorrect because the “show cdp neighbors” option describes a different concept: a Cisco IOS command that summarizes directly connected CDP neighbors.

 

Question 14

For Port ID, which statement is accurate?

1. The period for which learned discovery information remains valid without a fresh advertisement.
2. A Cisco IOS command that summarizes directly connected LLDP neighbors.
3. Link Layer Discovery Protocol, an open-standard Layer 2 discovery protocol for directly connected neighbors.
4. Discovery information identifying the neighbor interface connected to the local device.

Correct Answer: D

 

Correct Answer

Answer D is correct because it accurately defines Port ID. The matching definition is: Discovery information identifying the neighbor interface connected to the local device.

Incorrect Answers

Answer A is incorrect because the “Holdtime” option describes a different concept: the period for which learned discovery information remains valid without a fresh advertisement.

Answer B is incorrect because the “show lldp neighbors” option describes a different concept: a Cisco IOS command that summarizes directly connected LLDP neighbors.

Answer C is incorrect because the “LLDP” option describes a different concept: Link Layer Discovery Protocol, an open-standard Layer 2 discovery protocol for directly connected neighbors.

 

Question 15

For Device capability, which statement is accurate?

1. A type-length-value data element used by discovery protocols to carry specific pieces of information.
2. Discovery information identifying the neighbor interface connected to the local device.
3. Discovery information indicating functions such as router, switch, phone, or wireless access point.
4. The interface on the local device through which a discovered neighbor is reached.

Correct Answer: C

 

Correct Answer

Answer C is correct because the choice accurately describes Device capability: Discovery information indicating functions such as router, switch, phone, or wireless access point.

Incorrect Answers

Answer A is incorrect because the “TLV” option describes a different concept: a type-length-value data element used by discovery protocols to carry specific pieces of information.

Answer B is incorrect because the “Port ID” option describes a different concept: Discovery information identifying the neighbor interface connected to the local device.

Answer D is incorrect because the “Local interface” option describes a different concept: the interface on the local device through which a discovered neighbor is reached.

 

Question 16

For Holdtime, which statement is accurate?

1. The period for which learned discovery information remains valid without a fresh advertisement.
2. A Cisco IOS command that summarizes directly connected LLDP neighbors.
3. The interface on the local device through which a discovered neighbor is reached.
4. A Cisco IOS command that summarizes directly connected CDP neighbors.

Correct Answer: A

 

Correct Answer

Answer A is correct because the selected answer describes the period for which learned discovery information remains valid without a fresh advertisement.

Incorrect Answers

Answer B is incorrect because the “show lldp neighbors” option describes a different concept: a Cisco IOS command that summarizes directly connected LLDP neighbors.

Answer C is incorrect because the “Local interface” option describes a different concept: the interface on the local device through which a discovered neighbor is reached.

Answer D is incorrect because the “show cdp neighbors” option describes a different concept: a Cisco IOS command that summarizes directly connected CDP neighbors.

 

Question 17

For show cdp neighbors, which statement is accurate?

1. Cisco Discovery Protocol, a Cisco-proprietary Layer 2 discovery protocol used to advertise device information to directly connected neighbors.
2. The period for which learned discovery information remains valid without a fresh advertisement.
3. A Cisco IOS command that summarizes directly connected CDP neighbors.
4. Link Layer Discovery Protocol, an open-standard Layer 2 discovery protocol for directly connected neighbors.

Correct Answer: C

 

Correct Answer

Answer C is correct because the selected answer describes a Cisco IOS command that summarizes directly connected CDP neighbors.

Incorrect Answers

Answer A is incorrect because the “CDP” option describes a different concept: Cisco Discovery Protocol, a Cisco-proprietary Layer 2 discovery protocol used to advertise device information to directly connected neighbors.

Answer B is incorrect because the “Holdtime” option describes a different concept: the period for which learned discovery information remains valid without a fresh advertisement.

Answer D is incorrect because the “LLDP” option describes a different concept: Link Layer Discovery Protocol, an open-standard Layer 2 discovery protocol for directly connected neighbors.

 

Question 18

For show lldp neighbors, which statement is accurate?

1. Cisco Discovery Protocol, a Cisco-proprietary Layer 2 discovery protocol used to advertise device information to directly connected neighbors.
2. A Cisco IOS command that summarizes directly connected LLDP neighbors.
3. The interface on the local device through which a discovered neighbor is reached.
4. Discovery information identifying the neighbor interface connected to the local device.

Correct Answer: B

 

Correct Answer

Answer B is correct because it accurately defines show lldp neighbors. The matching definition is: A Cisco IOS command that summarizes directly connected LLDP neighbors.

Incorrect Answers

Answer A is incorrect because the “CDP” option describes a different concept: Cisco Discovery Protocol, a Cisco-proprietary Layer 2 discovery protocol used to advertise device information to directly connected neighbors.

Answer C is incorrect because the “Local interface” option describes a different concept: the interface on the local device through which a discovered neighbor is reached.

Answer D is incorrect because the “Port ID” option describes a different concept: Discovery information identifying the neighbor interface connected to the local device.

 

Question 19

For TLV, which statement is accurate?

1. A type-length-value data element used by discovery protocols to carry specific pieces of information.
2. A Cisco IOS command that summarizes directly connected CDP neighbors.
3. A directly connected device discovered through CDP or LLDP advertisements.
4. The interface on the local device through which a discovered neighbor is reached.

Correct Answer: A

 

Correct Answer

Answer A is correct because the choice accurately describes TLV: A type-length-value data element used by discovery protocols to carry specific pieces of information.

Incorrect Answers

Answer B is incorrect because the “show cdp neighbors” option describes a different concept: a Cisco IOS command that summarizes directly connected CDP neighbors.

Answer C is incorrect because the “Neighbor” option describes a different concept: a directly connected device discovered through CDP or LLDP advertisements.

Answer D is incorrect because the “Local interface” option describes a different concept: the interface on the local device through which a discovered neighbor is reached.

 

Question 20

For Local interface, which statement is accurate?

1. Cisco Discovery Protocol, a Cisco-proprietary Layer 2 discovery protocol used to advertise device information to directly connected neighbors.
2. The interface on the local device through which a discovered neighbor is reached.
3. Discovery information indicating functions such as router, switch, phone, or wireless access point.
4. A Cisco IOS command that summarizes directly connected CDP neighbors.

Correct Answer: B

 

Correct Answer

Answer B is correct because the selected answer describes the interface on the local device through which a discovered neighbor is reached.

Incorrect Answers

Answer A is incorrect because the “CDP” option describes a different concept: Cisco Discovery Protocol, a Cisco-proprietary Layer 2 discovery protocol used to advertise device information to directly connected neighbors.

Answer C is incorrect because the “Device capability” option describes a different concept: Discovery information indicating functions such as router, switch, phone, or wireless access point.

Answer D is incorrect because the “show cdp neighbors” option describes a different concept: a Cisco IOS command that summarizes directly connected CDP neighbors.