Ccna exam 640 801


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Ccna exam 640 801

  1. 1. CCNA 2 Chapter 10 V4.0 Answers 1. What action does a link-state router take immediately upon receipt of an LSP from a neighboring router? floods the LSP to neighbors calculates the SPF algorithm runs the Bellman-Ford algorithm computes the best path to the destination network 2. Why is it difficult for routing loops to occur in networks that use link-state routing? Each router builds a simple view of the network based on hop count. Routers flood the network with LSAs to discover routing loops. Each router builds a complete and synchronized view of the network. Routers use hold-down timers to prevent routing loops. Read more… CCNA 2 Chapter 9 V4.0 Answers 1. What two actions will the EIGRP DUAL FSM take if a link to a network goes down? (Choose two.) put the route into passive mode query neighbors for a new route search routing table for a feasible successor run the SPF algorithm to find a new successor search topology table for a feasible successor 2.
  2. 2. Host in the network illustrated is unable to ping host How must EIGRP be configured to enable connectivity between the two hosts? (Choose two.) R1(config-router)# network R1(config-router)# auto-summary R1(config-router)# no auto-summary R2(config-router)# no auto-summary R2(config-router)# auto-summary R2(config-router)# network Read more… CCNA 2 Chapter 8 V4.0 Answers 1. Refer to the exhibit. Router B receives a packet with a destination address of What will router B do? drop the packet
  3. 3. forward the packet via the route to forward the packet via the route to use the default route 2. A network is converged and the routing tables are complete. When a packet needs to be forwarded, what is the first criterion used to determine the best path in the routing table? the route with the smallest AD the route with the longest address and mask match to the destination the route with the highest bandwidth the route with the best combination of AD and lowest cost Read more… CCNA 2 Chapter 7 V4.0 Answers 1. A network administrator has been told that the company IP address infrastructure must adhere to RFC 1918. What three IP address ranges from RFC 1918 could the administrator use on the network? (Choose three.) 2.
  4. 4. Refer to the exhibit. Routers East and West are configured using RIPv1. Both routers are sending updates about their directly connected routes. The East router can ping the West router serial interface and West can ping the serial interface of East. However, neither router has dynamically learned routes from the other. What is most likely the problem? A gateway of last resort is required. Subnetting is not supported by RIPv1. VLSM is not supported by RIPv1. One of the routers needs a clock rate on the serial interface. Read more… CCNA 2 Chapter 6 V4.0 Answers 1. What two advantages does CIDR provide to a network? (Choose two.) reduced routing table size dynamic address assignment automatic route redistribution reduced routing update traffic automatic summarization at classful boundaries
  5. 5. 2. Refer to the exhibit. Which address is a broadcast address for one of the subnets that are shown in the exhibit? Read more…