CHAPTER 6-7
1. Which of the following
are specified by IEEE standards as sublayers of the OSI data link layer?
(Choose two.)
#a. Logical
Link Control
b. Logical
Layer Control
#c. Media
Access Control
d. Logical
Link Communication
e. Media
Access Communication
f. Physical
Access Communication
2. Refer to the exhibit. Host A is communicating with host
F. What happens to a frame sent from host A to host F as it travels over the
Ethernet segments?
a. The
frame format is modified as it passes through each switch.
#b. The
frame format remains the same across each Ethernet segment.
c. The
frame format is modified as the media speed changed at switch B and switch E.
d. The
frame format is modified as the media material changes between copper and fiber
at switch C and switch D.
3. In which two
layers of the OSI model does Ethernet function? (Choose two.)
a.
application
b. session
c.
transport
d. network
#e. data
link
#f.
physical
4. Where does the MAC
address originate?
a. DHCP
server database
b.
configured by the administrator
#c. burned
into ROM on the NIC card
d. network
configuration on the computer
e. included
in the creation of the processor chip
5. At what layer of
the OSI model does a MAC address reside?
a. 1
#b. 2
c. 3
d. 4
e. 7
6. A router has an
Ethernet, Token Ring, serial, and ISDN interface. Which interfaces will have a
MAC address?
a. serial
and ISDN interfaces
#b.
Ethernet and Token Ring interfaces
c. Ethernet
and ISDN interfaces
d. Token
Ring and serial interfaces
7. Which two devices
can provide full-duplex Ethernet connections? (Choose two.)
a. hub
b. modem
c. repeater
#d. NIC
#e. Layer 2
switch
8. Refer to the
exhibit. The small office network shown in the exhibit consists of four
computers connected through a hub. Which configuration would cause collisions
and errors on the network?
a.
autonegotiation
b.
FastEthernet
c.
peer-to-peer shared resources
#d.
administratively configured full duplex
9. Refer to the
exhibit. The switch and workstation are administratively configured for
full-duplex operation. Which statement accurately reflects the operation of
this link?
#a. No
collisions will occur on this link.
b. Only one
of the devices can transmit at a time.
c. The
switch will have priority for transmitting data.
d. The
devices will default back to half duplex if excessive collisions occur.
10. What are three
functions of a NIC in a PC? (Choose three.)
a. A NIC
connects the PC to the network media.
b. A NIC
detects collisions on the Ethernet segment.
c. A NIC
checks the formatting of data before it is transmitted.
#d. A NIC
passes the contents of selected frames to the upper OSI layers.
e. A NIC
acknowledges and retransmits data that was not received properly.
f. A NIC
discards frames when the destination IP address does not match the local host.
11. In an Ethernet
LAN, how does the NIC know when it can transmit data?
a. An
Ethernet NIC transmits data as soon as the frame is received.
b. An
Ethernet NIC transmits data as soon as the NIC receives a token.
c. An
Ethernet NIC transmits data when it senses a collision.
#d. An
Ethernet NIC transmits data after listening for the absence of a signal on the
media.
12. Refer to the
exhibit. All hosts are in listen mode. Host 1 and Host 4 both transmit data at
the same time. How do the hosts respond on the network? (Choose two.)
a. Hosts 1
and 4 may be operating full duplex so no collision will exist.
b. The hub
will block the port connected to Host 4 to prevent a collision.
#c. After
the end of the jam signal, Hosts 1, 2, 3, and 4 invoke a backoff algorithm.
d. When the
four hosts detect the collision, Hosts 1, 2, 3, and 4 generate a jam signal.
e. Hosts 1
and 4 are assigned shorter backoff values to provide them priority to access
the media.
#f. If a
host has data to transmit after the backoff period of that host, the host
checks to determine if the line is idle, before transmitting.
13. Which statement
describes how CSMA/CD on an Ethernet segment manages the retransmission of
frames after a collision occurs?
a. The first
device to detect the collision has the priority for retransmission.
b. The
device with the lowest MAC address determines the retransmission priority.
c. The
devices on the network segment hold an election for priority to retransmit data
#d. The devices
transmitting when the collision occurs DO NOT have priority for retransmission.
14. What is the
maximum distance that 10BASE-T will transmit data before signal attenuation
affects the data delivery?
#a. 100 meters
b. 185 meters
c. 300 meters
d. 500 meters
15. Which of the
following are Fast Ethernet technologies? (Choose two.)
a.
100BASE-5
b. 100BASE2
c.
1000BASE-F
#d.
100BASE-FX
#e.
100BASE-TX
16. At which OSI
layer do the differences between standard Ethernet, Fast Ethernet and Gigabit
Ethernet occur?
#a.
physical layer
b. data
link layer
c. network
layer
d.
transport layer
17. How does
1000BASE-T use the UTP wire pairs to accomplish transmission?
a. two
pairs are used to transmit and two pairs are used to receive
b. one pair
is used to transmit, one pair is used to receive, one pair is used for
clocking, and one pair is used for error correction
#c. all
four pairs are used in parallel by both hosts to transmit and receive
simultaneously
d. two
pairs of wires are used as in 10BASE-T and 100BASE-TX
18. Which statements
describe Gigabit Ethernet technology? (Choose two.)
a. operates
at 100 Mbps
#b.
typically used for backbone cabling
c. requires
shielded twisted-pair cabling
#d. can be
implemented over copper and fiber
e. primarily
used between workstations option
19. Which media types
can be used in an implementation of a 10BASE-T network? (Choose three.)
#a.
Category 5 UTP
#b.
Category 5e UTP
#c.
Category 3 UTP
d. coaxial
cable
e.
multi-mode fiber
f. single
mode fiber
20. Which of the
following Ethernet technologies are considered legacy Ethernet? (Choose three.)
#a. 10BASE2
#b. 10BASE5
#c.
10BASE-T
d.
100BASE-T
e.
100BASE-FX
f.
100BASE-TX
