Cisco 2, Module 2

Which statement is true about broadcast and collision domains?

• Adding a router to a network will increase the size of the collision domain.

• The size of the collision domain can be reduced by adding hubs to a network.

• Adding a switch to a network will increase the size of the broadcast domain.

• The more interfaces a router has the larger the resulting broadcast domain.

What is one function of a Layer 2 switch?

• duplicates the electrical signal of each frame to every port

• learns the port assigned to a host by examining the destination MAC address

• forwards data based on logical addressing

• determines which interface is used to forward a frame based on the destination MAC address

What is the significant difference between a hub and a Layer 2 LAN switch?

• A hub divides collision domains, and a switch divides broadcast domains.

• A switch creates many smaller collision domains, and a hub increases the size of a single collision domain.

• Each port of a hub is a collision domain, and each port of a switch is a broadcast domain.

• A hub forwards frames, and a switch forwards only packets.

What will a Cisco LAN switch do if it receives an incoming frame and the destination MAC address is not listed in the MAC address table?

• Use ARP to resolve the port that is related to the frame.

• Forward the frame out all ports except the port where the frame is received.

• Drop the frame.

• Send the frame to the default gateway address.

Which switch characteristic helps alleviate network congestion when a 10 Gbps port is forwarding data to a 1 Gbps port?

• frame buffering

• high port density

• fast port speed

• fast internal switching

Which switching method makes use of the FCS value?

• broadcast

• store-and-forward

• large frame buffer

• cut-through

What does the term "port density" represent for an Ethernet switch?

• the numbers of hosts that are connected to each switch port

• the speed of each port

• the memory space that is allocated to each switch port

• the number of available ports

Which information does a switch use to keep the MAC address table information current?

• the destination MAC address and the outgoing port

• the source MAC address and the outgoing port

• the source MAC address and the incoming port

• the destination MAC address and the incoming port

• the source and destination MAC addresses and the outgoing port

Which two statements are true about half-duplex and full-duplex communications? (Choose two.)

• Half duplex has only one channel.

• All modern NICs support both half-duplex and full-duplex communication.

• Full duplex offers 100 percent potential use of the bandwidth.

• Full duplex increases the effective bandwidth.

• Full duplex allows both ends to transmit and receive simultaneously.

Which type of address does a switch use to build the MAC address table?

• source IP address

• destination IP address

• destination MAC address

• source MAC address