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NCTI IV Ch. 11
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Exam of 6 pages for the course NCTI IV Ch. 11 at NCTI IV Ch. 11 (NCTI IV Ch. 11)
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NCTI IV Ch. 11Which of the following statements are true concerning Ethernet networks?
(Choose two.) Correct Ans - Ethernet can use thicknet, thinnet, or
twisted pair cable at the Physical Layer.
Media access control (MAC) frames are transmitted across the physical media.
What is the most widely installed local area network (LAN) technology?
Correct Ans - Ethernet
What is the primary reason an Ethernet network interface card (NIC)
transmits a jamming message? Correct Ans - To warn other stations
that a collision has been detected.
According to the Ethernet 5/4/3 rule, how many 10Base2 segments may have
nodes attached? Correct Ans - 3
Which Ethernet frame format includes a length field in the media access
control (MAC) header? Correct Ans - IEEE 802.3
What is the purpose of the frame check sequence (FCS) field? (Choose two)
Correct Ans - To check the Ethernet frame for errors using a cyclic
redundancy check (CRC).
To ensure the Ethernet frame does not get processed if an error has occurred.
Where are Ethernet frames processed? Correct Ans - By the network
interface card (NIC) at the Data Link Layer
What does an Ethernet frame addressed with a "1" as the first bit of
destination media access control (MAC) address do? Correct Ans - It
allows all frames to be multicast to a select group of nodes.
The network interface card (NIC) in an Ethernet node receives from the
Internet protocol (IP) a packet 12 bytes long. What must the NIC do in order
to prepare the packet for transmission across the physical network?
Correct Ans - Add padding, a header and a trailer.
, What layer of software is normally loaded on the network interface card
(NIC)? Correct Ans - Data Link Layer
What is the preamble used for? Correct Ans - To synchronize Ethernet
network interface cards (NIC) so the bits that make up the frames are received
correctly.
How is Fast Ethernet similar to standard Ethernet? Correct Ans - The
same frame format is used.
Cat 5E cabling can be used for both.
Star configurations are used in both types
A small company's chief technology officer (CTO) wants to upgrade their
existing network to Fast Ethernet. The existing network consists of the
following:• 10/100 Network interface cards (NIC) in the server and
workstations• 10/100 Hubs• Category 3 and 5E cabling• A 10/100
routerWhich component must be upgraded to support Fast Ethernet?
Correct Ans - The Category 3 cabling
What is the difference between the frame formats of 10 Mbps Ethernet and
100 Mbps Ethernet? Correct Ans - The 10 Mbps Ethernet frame is
exactly the same and contains the same fields as the 100 Mbps frame
What is the maximum cable length for 100BaseTx Ethernet? Correct Ans -
100m
Gigabit Ethernet uses a different frame format than 10 Mbps Ethernet and
Fast Ethernet. True or False? Correct Ans - False
Which of the following is a Gigabit Ethernet specification for copper cable?
Correct Ans - 1000BaseCX
Which of the statements below is incorrect when comparing Gigabit Ethernet
to Fast Ethernet technology? Correct Ans - Gigabit Ethernet uses the
same speed as Fast Ethernet
Which of the following is NOT a Gigabit Ethernet fiber cabling specification?
Correct Ans - 1000BaseFX
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