CISCO CCNA Semester Wise Dumps - Five

Q1. In an IPv4 environment, what information is used by the router to forward data packets from one interface of a router to another?

• destination network address
• source network address
• source MAC address
• well known port destination address

Q2. What information is added during encapsulation at OSI Layer 3?• source and destination MAC
• source and destination application protocol
• source and destination port number
• source and destination IP address

Q3. In a connectionless system, which of the following is correct?
• The destination is contacted before a packet is sent.
• The destination is not contacted before a packet is sent.
• The destination sends an acknowledgement to the source that indicates the packet was received.
• The destination sends an acknowledgement to the source that requests the next packet to be sent.

Q4. Which IP packet field will prevent endless loops?
• type-of-service
• identification
• flags
• time-to-live
• header checksum

Q5. Which portion of the network layer address does a router use to forward packets?
• host portion
• broadcast address
• network portion
• gateway address

Q6. If the default gateway is configured incorrectly on the host, what is the impact on communications?

• The host is unable to communicate on the local network.

• The host can communicate with other hosts on the local network, but is unable to communicate with hosts on remote networks.

• The host can communicate with other hosts on remote networks, but is unable to communicate with hosts on the local network.

• There is no impact on communications.

Q7. What is the purpose of a default gateway?
• physically connects a computer to a network
• provides a permanent address to a computer
• identifies the network to which a computer is connected

• identifies the logical address of a networked computer and uniquely identifies it to the rest of the network

• identifies the device that allows local network computers to communicate with devices on other networks

Q8. What type of routing uses information that is manually entered into the routing table?

• dynamic
• interior
• static
• standard

Q9. When the destination network is not listed in the routing table of a Cisco router, what are two possible actions that the router might take? (Choose two.)

• The router sends an ARP request to determine the required next hop address.
• The router discards the packet.
• The router forwards the packet toward the next hop indicated in the ARP table.
• The router forwards the packet to the interface indicated by the source address.
• The router forwards the packet out the interface indicated by the default route entry.

Q10. What are the key factors to consider when grouping hosts into a common network? (Choose three.)

• gateways
• purpose
• physical addressing
• software version
• geographic location
• ownership

Q11. What is a component of a routing table entry?
• the MAC address of the interface of the router
• the destination Layer 4 port number
• the destination host address
• the next-hop address

Q12. Which intermediary devices could be used to implement security between networks? (Choose two.)

• router
• hub
• switch
• firewall
• access point
• bridge

Q13. What are three common problems with a large network? (Choose three.)
• too few broadcasts
• performance degradation
• security issues
• limited management responsibility
• host identification
• protocol compatibility

Q14. Which three statements are true about routes and their use? (Choose three.)

• If no route to the destination network is found, the packet is returned to the previous router.

• If the destination network is directly connected, the router forwards the packet to the destination host.

• If multiple network entries exist for the destination network, the most general route is used to forward the packet.

• If no route exists for the destination network and a default route is present, the packet is forwarded to the next-hop router.

• If the originating host has a default gateway configured, the packet for a remote network can be forwarded using that route.

• If a host does not have a route manually configured for the destination network, the host will drop the packet.

Q15. What two characteristics are commonly associated with dynamic routing protocols? (Choose two.)

• require no device configuration
• provide routers with up-to-date routing tables
• require less processing power than static routes require
• consume bandwidth to exchange route information
• prevent manual configuration and maintenance of the routing table

Q16. What statement describes the purpose of a default route?

• A host uses a default route to transfer data to another host on the same network segment.

• A host uses a default route to forward data to the local switch as the next hop to all destinations.

• A host uses a default route to identify the Layer 2 address of an end device on the local network.

• A host uses a default route to transfer data to a host outside the local network when no other route to the destination exists.