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Home Nokia 4A0-C03

Nokia 4A0-C03 Exam Practice Questions (P. 1)

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Question #1
Consider the exhibit. Static routing is to be used in a network between a corporate head office and a branch office. The head office has many connected subnetworks, whereas the branch office has one subnetwork and a single connection to the head office. Which of the following is the most likely configuration on the head office and branch office routers?
  1. A
    The head office has a default route and the branch office has a specific static route.
  2. B
    The head office and the branch offices both have specific static routes.
  3. C
    The head office and the branch office both have default routes.
  4. D
    The head office has a specific static route and the branch office has a default route.

Correct Answer: D ?️

Question #2
A routing domain is using a single-area link-state routing protocol. Which of the following is NOT information that a router can share with other routers in the domain using protocol-specific messages?
  1. A
    The IP prefixes of subnets directly attached to the router.
  2. B
    IP prefixes known by the router because it is running an additional routing protocol.
  3. C
    A copy of the local routing table.
  4. D
    The local router ID and the router IDs of neighboring routers.

Correct Answer: C ?️

Question #3
Which of the following statements about the databases used by a link-state routing protocol in a single-area routing domain is FALSE?
  1. A
    The link-state database has the local topology and IP reachability information advertised by all the routers.
  2. B
    The adjacency database contains information about all the links interconnecting the domain's routers.
  3. C
    The forwarding database contains the optimum next hop for each known prefix.
  4. D
    The link-state database is the same for all routers.

Correct Answer: B ?️

Question #4
A router running a link-state routing protocol detects that one of its neighbors is no longer connected to it. The router generates a new link-state advertisement to inform other routers of the topology change. Which of the following is NOT an action that is triggered by this event?
  1. A
    If a router receives the new link-state advertisement, it acknowledges it, stores it, and forwards it to its own neighbors.
  2. B
    If a router receives multiple copies of the new link-state advertisement, it will simply ignore all copies received after the first one.
  3. C
    Every router that receives the new link-state advertisement updates its age field before forwarding it.
  4. D
    Every router that receives the new link-state advertisement runs the SPF algorithm to recalculate its shortest-path tree and its forwarding database.

Correct Answer: C ?️

Question #5
A routing domain uses a link-state routing protocol. Which of the following would NOT be an advantage of dividing the entire routing domain into areas?
  1. A
    Detailed topology information is only shared among routers within the same area, thus reducing the complexity of the SPF calculation.
  2. B
    Route tables can be reduced by summarizing the IP prefixes advertised between areas.
  3. C
    Less-capable routers can be isolated from having to keep track of IP prefixes that are external to the local routing domain.
  4. D
    Fewer routers are required to handle the same amount of traffic, as compared to a single-area domain.

Correct Answer: D ?️

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