WorksheetsNetworking and Switching Quiz chapter 2
Total questions: 21
Worksheet time: 11mins
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 switch to a network will increase the size of the broadcast domain.
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.
What is one function of a Layer 2 switch?
forwards data based on logical addressing
determines which interface is used to forward a frame based on the destination MAC address
duplicates the electrical signal of each frame to every port
learns the port assigned to a host by examining 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.
Each port of a hub is a collision domain, and each port of a switch is a broadcast domain.
A switch creates many smaller collision domains, and a hub increases the size of a single collision 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?
Send the frame to the default gateway address.
Use ARP to resolve the port that is related to the frame.
Drop the frame.
Forward the frame out all ports except the port where the frame is received.
Which switch characteristic helps alleviate network congestion when a 10 Gbps port is forwarding data to a 1 Gbps port?
high port density
fast port speed
fast internal switching
frame buffering
Which switching method makes use of the FCS value?
broadcast
large frame buffer
store-and-forward
cut-through
What does the term “port density” represent for an Ethernet switch?
the memory space that is allocated to each switch port
the number of available ports
the speed of each port
the numbers of hosts that are connected to each switch port
Which information does a switch use to keep the MAC address table information current?
the source and destination MAC addresses and the outgoing port
the source and destination MAC addresses and the incoming port
the source MAC address and the incoming port
the destination MAC address and the incoming port
the source MAC address and the outgoing port
Which two statements are true about half-duplex and full-duplex communications? (Choose two.)
Half duplex has only one channel.
Full duplex increases the effective bandwidth.
Full duplex allows both ends to transmit and receive simultaneously.
Full duplex offers 100 percent potential use of the bandwidth.
All modern NICS support both half-duplex and full-duplex communication.
Which type of address does a switch use to build the MAC address table?
source IP address
source MAC address
destination MAC address
destination IP address
Which option correctly describes a switching method?
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
store-and-forward: ensures that the frame is free of physical and data-link errors
Which network device can serve as a boundary to divide a Layer 2 broadcast domain?
router
Ethernet hub
access point
Ethernet bridge
What is the purpose of frame buffers on a switch?
They execute checksum values before transmission.
They provide temporary storage of the frame checksum.
They hold traffic, thus alleviating network congestion.
They provide a basic security scan on received frames.
Which network device can be used to eliminate collisions on an Ethernet network?
hub
firewall
switch
router
What criteria is used by a Cisco LAN switch to decide how to forward Ethernet frames?
Destination IP address
Destination MAC address
Egress port
Path cost
What are two reasons a network administrator would segment a network with a Layer 2 switch? (Choose two.)
To create fewer collision domains
To enhance user bandwidth
To create more broadcast domains
To isolate traffic between segments
To eliminate virtual circuits
A switch has received a frame on an ingress port. What will the switch do if the unicast destination MAC address is in the MAC address table?
It will drop the frame.
It will forward the frame out all ports.
It will forward the frame out all ports except the incoming port.
It will forward the frame out of the specified port in the MAC address table.
A switch has received a frame on an ingress port. What will the switch do if the unicast destination MAC address is not in the MAC address table?
It will drop the frame.
It will forward the frame out all ports.
It will forward the frame out all ports except the incoming port.
It will forward the frame out of the specified port in the MAC address table.
A switch has received a frame on an ingress port. What will the switch do if the destination MAC address is a broadcast address?
It will drop the frame.
It will forward the frame out all ports.
It will forward the frame out all ports except the incoming port.
It will forward the frame out of the specified port in the MAC address table.
Which switching method forwards the frame immediately after examining the destination MAC address?
Broadcast
Cut-though
Large frame buffer
Store-and-forward
Which statement about half-duplex and full-duplex communication is true?
Gigabit Ethernet and 10 Gb/s NICs can operate in full-duplex or half-duplex.
Full-duplex communication is bidirectional.
Half-duplex communication allows both ends to transmit and receive simultaneously.
Half-duplex communication is unidirectional, or one direction at a time.
