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- Question 57
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Question 57/63
You enabled CDP on two Cisco Routers which are connected to each other. The Line and Protocol status for the interfaces on both routers show as UP but the routers do not see each other a CDP neighbors.
Which layer of the OSI model does the problem most likely exist?
Which layer of the OSI model does the problem most likely exist?
Correct Answer: D
Explanation/Reference:
CDP is a protocol that runs over Layer 2 (the data link layer) on all Cisco routers, bridges, access servers, and switches. CDP allows network management applications to discover Cisco devices that are neighbors of already known devices, in particular, neighbors running lower-layer, transparent protocols. With CDP, network management applications can learn the device type and the SNMP agent address of neighboring devices. This feature enables applications to send SNMP queries to neighboring devices. In this case, the line protocol is up which means that the physical layer is operational (layer 1) but the data link layer is not.
References:
CDP is a protocol that runs over Layer 2 (the data link layer) on all Cisco routers, bridges, access servers, and switches. CDP allows network management applications to discover Cisco devices that are neighbors of already known devices, in particular, neighbors running lower-layer, transparent protocols. With CDP, network management applications can learn the device type and the SNMP agent address of neighboring devices. This feature enables applications to send SNMP queries to neighboring devices. In this case, the line protocol is up which means that the physical layer is operational (layer 1) but the data link layer is not.
References:
- Question List (63q)
- Question 1: Which three features are benefits of using GRE tunnels in co...
- Question 2: Which two of the following options are categories of Network...
- Question 3: The implementations group has been using the test bed to do ...
- Question 4: Scenario: You have been brought in to troubleshoot an EIGRP ...
- Question 5: What level of logging is enabled on a Router where the follo...
- Question 6: The implementations group has been using the test bed to do ...
- Question 7: The implementations group has been using the test bed to do ...
- Question 8: The implementations group has been using the test bed to do ...
- Question 9: The implementations group has been using the test bed to do ...
- Question 10: The implementations group has been using the test bed to do ...
- Question 11: A customer network engineer has made configuration changes t...
- Question 12: Scenario: You have been asked by your customer to help resol...
- Question 13: The implementations group has been using the test bed to do ...
- Question 14: When troubleshooting an EIGRP connectivity problem, you noti...
- Question 15: Scenario: A customer network engineer has edited their OSPF ...
- Question 16: The implementations group has been using the test bed to do ...
- Question 17: The implementations group has been using the test bed to do ...
- Question 18: The implementations group has been using the test bed to do ...
- Question 19: The implementations group has been using the test bed to do ...
- Question 20: The implementations group has been using the test bed to do ...
- Question 21: The implementations group has been using the test bed to do ...
- Question 22: The following commands are issued on a Cisco Router: Router(...
- Question 23: The implementations group has been using the test bed to do ...
- Question 24: Refer to the exhibit. (Exhibit) How would you confirm on R1 ...
- Question 25: Exhibit: (Exhibit) A network administrator is troubleshootin...
- Question 26: You have the followings commands on your Cisco Router: ip ft...
- Question 27: The implementations group has been using the test bed to do ...
- Question 28: The implementations group has been using the test bed to do ...
- Question 29: Which IPsec mode will encrypt a GRE tunnel to provide multip...
- Question 30: Refer to the shown below. %LINK-3-UPDOWN: Interface Serial0/...
- Question 31: The implementations group has been using the test bed to do ...
- Question 32: The implementations group has been using the test bed to do ...
- Question 33: The implementations group has been using the test bed to do ...
- Question 34: The implementations group has been using the test bed to do ...
- Question 35: Scenario: You have been asked by your customer to help resol...
- Question 36: Scenario: You have been asked by your customer to help resol...
- Question 37: The implementations group has been using the test bed to do ...
- Question 38: Scenario: A customer network engineer has edited their OSPF ...
- Question 39: The implementations group has been using the test bed to do ...
- Question 40: The implementations group has been using the test bed to do ...
- Question 41: The implementations group has been using the test bed to do ...
- Question 42: The implementations group has been using the test bed to do ...
- Question 43: The implementations group has been using the test bed to do ...
- Question 44: The implementations group has been using the test bed to do ...
- Question 45: A customer network engineer has made configuration changes t...
- Question 46: The implementations group has been using the test bed to do ...
- Question 47: The implementations group has been using the test bed to do ...
- Question 48: A customer network engineer has made configuration changes t...
- Question 49: The implementations group has been using the test bed to do ...
- Question 50: Scenario: A customer network engineer has edited their OSPF ...
- Question 51: The implementations group has been using the test bed to do ...
- Question 52: Which statement is true about an IPsec/GRE tunnel?...
- Question 53: The implementations group has been using the test bed to do ...
- Question 54: The implementations group has been using the test bed to do ...
- Question 55: The implementations group has been using the test bed to do ...
- Question 56: The implementations group has been using the test bed to do ...
- Question 57: You enabled CDP on two Cisco Routers which are connected to ...
- Question 58: The implementations group has been using the test bed to do ...
- Question 59: A customer network engineer has made configuration changes t...
- Question 60: The implementations group has been using the test bed to do ...
- Question 61: Scenario: You have been asked by your customer to help resol...
- Question 62: You have been brought in to troubleshoot an EIGRP network. A...
- Question 63: The implementations group has been using the test bed to do ...
