Essential CCNA Routing and Switching Practice Questions

Router Packet Encapsulation and Forwarding

What are the true allegations regarding encapsulation and unencapsulated packets when traveling through a router? (Choose two.)

• The router modifies the TTL field, decreasing it by one.
• The router changes the source physical address to the physical address of the outbound interface.
• The router maintains the same IP source and destination.

Routing Table Lookups

Refer to the exhibit. Which packets destined for one of the two networks will require the router to perform a search? (Choose two.)

• 10.0.0.0/8
• 192.168.2.0/24

Split Horizon with Poison Reverse

Which two of the following statements are correct about the method of split horizon with poison reverse to prevent routing loops? (Choose two.)

• Assign a value that represents an infinite metric to the poisoned route.
• Put back the poisoned route to the same interface from where it was received.

RIP Configuration

A network administrator enabled RIP on routers B and C in the network diagram. Which of the following commands will prevent RIP updates from being sent to Router A?

• B(config)# router rip
• B(config-router)# passive-interface S0/0

EIGRP Topology Analysis

See the image. What are the two true statements based on the results shown? (Choose two.)

• All the routers are stable.
• The show ip eigrp topology command was run on R1.

Router1 Routing Table Evaluation

Refer to the exhibit. What are the three true statements from the routing table for Router1? (Choose two.)

• The AD of EIGRP routes has been manually changed from the default value.
• Router1 is running both the EIGRP routing process and OSPF.
• No default route has been set.

Router Components and Operations

Which two router component and operation pairs are correctly described? (Choose two.)

• NVRAM: Stores the configuration file.
• POST: Runs diagnostics on hardware modules.

OSPF Neighbor Adjacency

What tasks must be completed before two routers can use OSPF to form a neighbor adjacency? (Choose two.)

• The routers must agree on the type of network.
• The routers must use the same dead interval.

Core Functions of a Router

What are the primary functions of a router? (Choose two.)

• Connects multiple IP networks.
• Determines the best path to forward packets.

Ethernet Interface Analysis

See the image. Which of the following statements is true about the Ethernet interfaces on the network?

• A frame leaves the interface Fa0/0 of R1 with the source MAC address 000C.3010.9260.

Static Routing Configuration

See the image. A network administrator adds this command to router R1: ip route 192.168.2.0 255.255.255.0 S0/0/0. What is the result of adding this command?

• It establishes a static route.