CCNA Module 2 Quiz

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? A. Drop the frame. B. Forward the frame out all ports except the port where the frame is received. C. Send the frame to the default gateway address. D. 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.

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

Full duplex offers 100 percent potential use of the bandwidth. Full duplex allows both ends to transmit and receive simultaneously.

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

router

Which type of address does a switch use to build the MAC address table? A. source IP address B. destination MAC address C. source MAC address D. destination IP address

source MAC address

What is the significant difference between a hub and a Layer 2 LAN switch? A. A hub forwards frames, and a switch forwards only packets. B. Each port of a hub is a collision domain, and each port of a switch is a broadcast domain. C. A switch creates many smaller collision domains, and a hub increases the size of a single collision domain. D. 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.

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

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

A mode in which a data packet is forwarded to the destination as soon as the destination MAC address has been read

Cut-Through Method

The entire frame of data is received before any decision is made regarding forwarding the data packet to its destination. It also ensures that the frame is free of physical and data-link errors

Store-and-Forward Method

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

They hold traffic, thus alleviating network congestion.

What is one function of a Layer 2 switch? A. learns the port assigned to a host by examining the destination MAC address B. duplicates the electrical signal of each frame to every port C. forwards data based on logical addressing D. determines which interface is used to forward a frame based on the destination MAC address

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

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

frame buffering

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

store-and-forward

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

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

Which network device can be used to eliminate collisions on an Ethernet network? A. router B. hub C. switch D. firewall

switch

What does the term "port density" represent for an Ethernet switch? A. the numbers of hosts that are connected to each switch port B. the number of available ports C. the speed of each port D. 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? A. the destination MAC address and the outgoing port B. the destination MAC address and the incoming port C. the source and destination MAC addresses and the outgoing port D. the source and destination MAC addresses and the incoming port E. the source MAC address and the incoming port F. the source MAC address and the outgoing port

the source MAC address and the incoming port