CIS 224 Unit 2 Module Quiz

the number of available ports

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 number of available ports the memory space that is allocated to each switch port

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

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

They hold traffic, thus alleviating network congestion.

What is the purpose of frame buffers on a switch? They hold traffic, thus alleviating network congestion. They provide a basic security scan on received frames. They execute checksum values before transmission. They provide temporary storage of the frame checksum.

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

What is the significant difference between a hub and a Layer 2 LAN switch? A hub forwards frames, and a switch forwards only packets. Each port of a hub is a collision domain, and each port of a switch is a broadcast domain. 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.

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

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? Send the frame to the default gateway address. Drop the frame. Forward the frame out all ports except the port where the frame is received. Use ARP to resolve the port that is related to the frame.

the source MAC address and the incoming port

Which information does a switch use to keep the MAC address table information current? the source MAC address and the incoming port the destination MAC address and the outgoing port the source MAC address and the outgoing port the source and destination MAC addresses and the outgoing port the destination MAC address and the incoming port the source and destination MAC addresses and the incoming port

switcb

Which network device can be used to eliminate collisions on an Ethernet network? router hub firewall switch

router

Which network device can serve as a boundary to divide a Layer 2 broadcast domain? router Ethernet bridge access point Ethernet hub

store-and-forward: ensures that the frame is free of physical and data-link errors

Which option correctly describes a switching method? store-and-forward: ensures that the frame is free of physical and data-link errors cut-through: makes a forwarding decision after receiving the entire frame cut-through: provides the flexibility to support any mix of Ethernet speeds store-and-forward: forwards the frame immediately after examining its destination MAC address

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

Which statement is true about broadcast and collision domains? The size of the collision domain can be reduced by adding hubs to a network. Adding a router to a network will increase the size of the collision domain. The more interfaces a router has the larger the resulting broadcast domain. Adding a switch to a network will increase the size of the broadcast domain.

frame buffering

Which switch characteristic helps alleviate network congestion when a 10 Gbps port is forwarding data to a 1 Gbps port? fast internal switching high port density fast port speed frame buffering

store-and-forward

Which switching method makes use of the FCS value? large frame buffer cut-through store-and-forward broadcast

Full duplex allows both ends to transmit and receive simultaneously. Full duplex increases the effective bandwidth.

Which two statements are true about half-duplex and full-duplex communications? (Choose two.) Half duplex has only one channel. Full duplex allows both ends to transmit and receive simultaneously. Full duplex increases the effective bandwidth. All modern NICs support both half-duplex and full-duplex communication. Full duplex offers 100 percent potential use of the bandwidth.

source MAC address

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