test

4. Which IPv4 address can a host use to ping the loopback interface?

127.0.0.1

29. Where are IPv4 address to Layer 2 Ethernet address mappings maintained on a host computer?

ARP cache

20. What statement describes the function of the Address Resolution Protocol?

ARP is used to discover the MAC address of any host on the local network.

7. Why is NAT not needed in IPv6?​

Any host or user can get a public IPv6 network address because the number of available IPv6 addresses is extremely large.​

19. When transporting data from real-time applications, such as streaming audio and video, which field in the IPv6 header can be used to inform the routers and switches to maintain the same path for the packets in the same conversation?

Flow Label

6. Which statement describes a feature of the IP protocol?

IP relies on upper layer services to handle situations of missing or out-of-order packets.

14. What IPv4 header field identifies the upper layer protocol carried in the packet?

Protocol

5. A computer can access devices on the same network but cannot access devices on other networks. What is the probable cause of this problem?

The computer has an invalid default gateway address.

10. Within a production network, what is the purpose of configuring a switch with a default gateway address?

The default gateway address is used to forward packets originating from the switch to remote networks.

21. Under which two circumstances will a switch flood a frame out of every port except the port that the frame was received on? (Choose two.)

The frame has the broadcast address as the destination address. The destination address is unknown to the switch.

2. A computer has to send a packet to a destination host in the same LAN. How will the packet be sent?

The packet will be sent directly to the destination host.

25. Refer to the exhibit. The exhibit shows a small switched network and the contents of the MAC address table of the switch. PC1 has sent a frame addressed to PC3. What will the switch do with the frame?

The switch will forward the frame to all ports except port 4.

22. Which statement describes the treatment of ARP requests on the local link?

They are received and processed by every device on the local network.

18. How do hosts ensure that their packets are directed to the correct network destination?

They have to keep their own local routing table that contains a route to the loopback interface, a local network route, and a remote default route.​

11. What is a basic characteristic of the IP protocol?

connectionless

1. Which information is used by routers to forward a data packet toward its destination?

destination IP address

13. What is one advantage that the IPv6 simplified header offers over IPv4?

efficient packet handling

9. What are two services provided by the OSI network layer? (Choose two.)

routing packets toward the destination encapsulating PDUs from the transport layer

8. Which parameter does the router use to choose the path to the destination when there are multiple routes available?

the lower metric value that is associated with the destination network

27. What is the aim of an ARP spoofing attack?

to associate IP addresses to the wrong MAC address

23. Which destination address is used in an ARP request frame?

FFFF.FFFF.FFFF

47. What are two potential network problems that can result from ARP operation? (Choose two.)

On large networks with low bandwidth, multiple ARP broadcasts could cause data communication delays. Network attackers could manipulate MAC address and IP address mappings in ARP messages with the intent of intercepting network traffic.

24. A network technician issues the arp -d * command on a PC after the router that is connected to the LAN is reconfigured. What is the result after this command is issued?

The ARP cache is cleared.

3. A router receives a packet from the Gigabit 0/0 interface and determines that the packet needs to be forwarded out the Gigabit 0/1 interface. What will the router do next?

create a new Layer 2 Ethernet frame to be sent to the destination

30. What important information is examined in the Ethernet frame header by a Layer 2 device in order to forward the data onward?

destination MAC address

26. Which two types of IPv6 messages are used in place of ARP for address resolution?

neighbor solicitation neighbor advertisement

28. Refer to the exhibit. PC1 attempts to connect to File_server1 and sends an ARP request to obtain a destination MAC address. Which MAC address will PC1 receive in the ARP reply?

the MAC address of the G0/0 interface on R1

16. What information does the loopback test provide?

The TCP/IP stack on the device is working correctly.

17. What routing table entry has a next hop address associated with a destination network?

remote routes