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Question 19/51
When are virtual links used in OSPF?
Correct Answer: B
Comprehensive and Detailed Explanation From Exact Extract:
FromNokia 7750 SR OS OSPF Guide - Virtual Links Section:
"A virtual link is used when an area that is not physically connected to area 0 needs to logically connect through another area to maintain OSPF backbone integrity." Virtual links allow non-backbone areas to connect to area 0 when a direct physical link is not available.
OSPF requires that all areas must be logically attached to area 0.
Thus, the correct answer is B.
FromNokia 7750 SR OS OSPF Guide - Virtual Links Section:
"A virtual link is used when an area that is not physically connected to area 0 needs to logically connect through another area to maintain OSPF backbone integrity." Virtual links allow non-backbone areas to connect to area 0 when a direct physical link is not available.
OSPF requires that all areas must be logically attached to area 0.
Thus, the correct answer is B.
- Question List (51q)
- Question 1: Which of the following statements regarding area border rout...
- Question 2: What must be configured on the Nokia 7750 SR for RIP to adve...
- Question 3: Click the exhibit button. (Exhibit) In the topology shown, r...
- Question 4: Click the exhibit button. (Exhibit) If router R2 redistribut...
- Question 5: What is the metric and maximum routable value for RIP?...
- Question 6: Which one of the commands below will create a static route t...
- Question 7: Click on the exhibit. (Exhibit) Router R2 learns the network...
- Question 8: Which of the following statements regarding the election of ...
- Question 9: Which of the following is NOT a characteristic of RIPv1?...
- Question 10: Which of the following correctly lists the 5 OSPF packet typ...
- Question 11: Exhibit (Exhibit) Given the two configurations shown, identi...
- Question 12: What is the source IP address in an OSPF update?...
- Question 13: An Nokia 7750 SR receives a route via an IS-IS LSP with inte...
- Question 14: What causes an adjacency to change from "Init" to "Two Way"?...
- Question 15: Click the exhibit button. (Exhibit) What can you deduce from...
- Question 16: What command could be used to verify proper configuration of...
- Question 17: Click the exhibit button. (Exhibit) Which of the following w...
- Question 18: Click on the exhibit. (Exhibit) The route table on router R2...
- Question 19: When are virtual links used in OSPF?...
- Question 20: Which of the following cannot be used as a matching criterio...
- Question 21: Click the exhibit button. (Exhibit) A static route is create...
- Question 22: An OSPF ASBR must have at least one interface in the backbon...
- Question 23: What is the default inbound metric for RIP on the Nokia 7750...
- Question 24: Which of the following statements concerning OSPFv3 is false...
- Question 25: What are the default Hello and Dead timer intervals for OSPF...
- Question 26: Which type of OSPF LSA has the following characteristics: It...
- Question 27: A default route for a client is also known as the:...
- Question 28: NSSA LSA packets are what type within an NSSA area, and are ...
- Question 29: Click the exhibit button. (Exhibit) Router R2 advertises the...
- Question 30: Choose the Distance Vector Protocols from the list below:...
- Question 31: What is the default preference value for a static route in t...
- Question 32: What is the protocol number for OSPF in the IP header?...
- Question 33: A static route is created using the command "static-route 2....
- Question 34: Click the exhibit button. (Exhibit) Routers R1 „ R2, and R3...
- Question 35: What command will show the OSPF neighbors, and their status ...
- Question 36: Click the exhibit button. (Exhibit) If router R2 redistribut...
- Question 37: Refer to the exhibit. (Exhibit) Assume that OSPFv3 is proper...
- Question 38: Click the exhibit button. (Exhibit) What is the command to c...
- Question 39: How many databases does a Link State routing protocol use?...
- Question 40: Click the exhibit button. (Exhibit) The OSPF packets shown h...
- Question 41: What causes an adjacency to change from down to two ways?...
- Question 42: Which of the following statements regarding OSPF routing upd...
- Question 43: What are the three databases maintained by a Link State Prot...
- Question 44: What are the types of networks supported on a Nokia 7750 SR ...
- Question 45: Which of the LSA types stay within an OSPF area and are not ...
- Question 46: In an OSPF Hello packet what fields must match all neighbor ...
- Question 47: An interface is configured on a router for OSPF but the comm...
- Question 48: Static routing will be used in a network between a corporate...
- Question 49: Which of the following statements regarding OSPF routing upd...
- Question 50: What is the default preference value for a static route in t...
- Question 51: Which of the following statements describe the major feature...
