Nokia 4A0-112 問題集

質問 1：
A series of actions are triggered on a router as a result of enabling both loopfree-alternate for a link-state routing protocol and ip-fast-reroute. Which of the following is NOT one of those actions?
A. Calculating the shortest-path next hop for each known IP prefix.
B. Enabling the router to locally repair the active path to an IP prefix in case of failure.
C. Calculating a backup next hop for each known IP prefix, if it exists, that would not create a routing loop if used without informing other routers.
D. Installing two entries in the FIB for IP prefixes, one active and one in standby mode.
正解：A

質問 2：
On a broadcast interface, an IS-IS router receives an LSP that is newer than the one on its database. Which of the following statements best describes the actions taken by the router as a consequence?
A. The router sends back a copy of the LSP from its database to its neighbor.
B. The router updates its database with the LSP and acknowledges it with a PSNP.
C. The router updated its database with the LSP, acknowledges the LSP with a PSNP, and floods a copy to its neighbors on other interfaces.
D. The router updates its database with the LSP and floods a copy to its neighbors on other interfaces.
正解：C
解説: (Topexam メンバーにのみ表示されます)

質問 3：
Which of the following is NOT a required configuration step to successfully run IS-IS on a router?
A. Layer-3 interfaces that will participate in IS-IS need to be identified.
B. The router needs to be associated with an IS-IS area ID.
C. A reference bandwidth needs to be configured to calculate link costs.
D. The IS-IS context needs to be enabled.
正解：C
解説: (Topexam メンバーにのみ表示されます)

質問 4：
Which of the following statements about router interfaces on a Nokia 7750 SR is FALSE?
A. They can be used in pairs on the same subnet for redundancy.
B. The system interface exists by default.
C. They can be assigned IPv4 and/or IPv6 addresses.
D. They can be logical or physical.
正解：A
解説: (Topexam メンバーにのみ表示されます)