A network administrator has a multi-floor
LAN to monitor and maintain. Through careful monitoring,
the administrator has noticed a large amount of
broadcast traffic slowing the network. Which device
would you use to best solve this problem?
bridge
hub
router
transceiver
2
What is the function of a Layer 2
switch?
forwards data based on
logical addressing
duplicates the
electrical signal of each frame to every port
learns the port
assigned to a host by examining the destination MAC
address
determines which
interface is used to forward a frame based on the
destination MAC address
3
Refer to the exhibit. The switch and
the hub have default configurations, and the switch has
built its CAM table. Which of the hosts will receive the
data when workstation A sends a unicast packet to
workstation C?
workstation C
workstations B and
C
workstations B, C, and
the E0 interface of the router
workstations B, C, D,
E, F, and the E0 interface of the
router
4
Refer to the exhibit. Forty-eight
workstations are connected to a hub. The users are able
to connect to the network, but access is very slow. An
entry-level technician replaces the 10 Mbps hub with 100
Mbps hub but the problem still exists. What is the most
economical way to correct the problem?
Replace the hub with a
switch.
Replace the hub with a
router.
Replace the hub with a
1 Gbps hub.
Replace the hub with a
10 Mbps fiber hub.
5
Exhibited is a portion of ABC Company
internetwork. Which of the connections can be full
duplex?
segments 1 and 2
segment 2
segments 3 and 4
segments 2, 3, and
4
segments 1, 2, 3, and
4
6
What will a bridge do if it receives a
frame with a MAC address that is not within the
table?
discard frame
ignore frame
send frame to
appropriate port
send frame to all ports
except source port
7
What is used to prevent Layer 2 switching
loops?
bridging
segmentation
Address Resolution
Protocol
Spanning-Tree
Protocol
8
An administrator would like to connect ten
workstations on a 192.168.0.0/24 network. The device
selected by the administrator must allow connectivity
between hosts without sharing bandwidth. Which device
would be appropriate?
hub
router
switch
repeater
9
Which devices will create multiple
collision domains in an Ethernet network? (Choose
two.)
NIC
hub
switch
router
repeater
10
Two newly hired technicians are discussing
the implementation of a new LAN. One technician proposes
installing a hub. The other technician advises
installing a switch. Which statements are true about the
differences between a hub and a switch? (Choose
two.)
A hub operates at Layer
2 of the OSI model.
A hub reduces the
number of collisions on a LAN.
A hub works at a higher
OSI model layer than a switch.
A switch provides more
throughput to hosts on a LAN.
A switch provides a
collision-free environment on a LAN.
The number of
collisions on a LAN are the same whether a hub or a
switch is used.
11
A PC receives a frame. Which situation
will cause the NIC on the receiving host to pass the
frame contents up the OSI layers to be processed by the
PC?
The frame is a runt
frame.
The destination MAC
address of the frame is FFFF.FFFF.FFFF.
The transmitting host
generated a jam signal during the frame transmission.
The recalculated
checksum for the frame does not match the FCS on the
frame.
12
Which networking device reduces the size
of both collision domains and broadcast
domains?
hub
Layer 2 switch
router
bridge
repeater
13
Which devices are primarily used to extend
cable segments within a collision domain by regenerating
the data signals? (Choose two.)
switch
repeater
router
bridge
hub
14
Which networking devices use the MAC
address to make forwarding decisions? (Choose
two.)
NIC
bridge
hub
switch
repeater
15
Refer to the exhibit. How many
broadcast domains exist in classroom 240?
