Networking Fundamentals Quiz

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

• performing error detection

• routing packets toward the destination

• encapsulating PDUs from the transport layer

• placement of frames on the media

• collision detection

What are two functions of NVRAM?

• to store the routing table

• to retain contents when power is removed

• to store the startup configuration file

• to contain the running configuration file

• to store the ARP table

Which two functions are primary functions of a router?

• packet forwarding

• microsegmentation

• domain name resolution

• path selection

• flow control

What is the effect of using the Router# copy running-config startup-config command on a router?

What will happen if the default gateway address is incorrectly configured on a host?

What are two potential network problems that can result from ARP operation?

• Manually configuring static ARP associations could facilitate ARP poisoning or MAC address spoofing.

• 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.

• Large numbers of ARP request broadcasts could cause the host MAC address table to overflow and prevent the host from communicating on the network.

• Multiple ARP replies result in the switch MAC address table containing entries that match the MAC addresses of hosts that are connected to the relevant switch port.

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

• source IP address

• destination IP address

• source data-link address

• destination data-link address

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 to the default gateway first, and then, depending on the response from the gateway, it may be sent to the destination host.

• The packet will be sent directly to the destination host.

• The packet will first be sent to the default gateway, and then from the default gateway it will be sent directly to the destination host.

• The packet will be sent only to the default gateway.

A router boots and enters setup mode. What is the reason for this?

• The IOS image is corrupt.

• Cisco IOS is missing from flash memory.

• The configuration file is missing from NVRAM.

• The POST process has detected hardware failure.

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

• the lower gateway IP address to get to the destination network

• the higher metric value that is associated with the destination network

• the higher gateway IP address to get to the destination network