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The _________ specifies the station that sent the frame.


A) MAC client data
B) SFD
C) SA
D) FCS

E) B) and D)
F) B) and C)

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Two general approaches to connecting multiple LANs are bridges and switches.

A) True
B) False

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In general,the performance of a LAN declines with increased lengths of connections and / or the number of devices using it.

A) True
B) False

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A broadcast recipient address means that all devices connected to the LAN are to receive the message.

A) True
B) False

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A _________ is octets added to ensure that the frame is long enough for proper CD operation.

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VLANs provide the ability for any organization to be physically dispersed throughout the company while maintaining its group identity.

A) True
B) False

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Two major types of layer 2 switches are available for use in business networks: store-and-forward switch and ____________.

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Segmenting a larger network into ___________ domains can help to prevent a fault in one network segment from affecting the entire network.

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The __________ is a 32-bit cyclic redundancy check (CRC) , based on all fields except preamble,SFD,and FCS.


A) FCS
B) extension
C) SFD
D) none of the above

E) B) and C)
F) A) and D)

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Network topology refers to the way individual end stations access the network prior to transmission of user data.

A) True
B) False

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Which of the following LAN technologies has the highest capacity?


A) Ethernet
B) Fast Ethernet
C) Fibre Channel
D) Gigabit Ethernet

E) A) and D)
F) A) and C)

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In the MAC frame,the start of frame delimited (SFD)provides the receiver with the starting point of meaningful data in the frame.

A) True
B) False

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A _________ provides a means of interconnecting similar LANs.

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The __________ is a data unit supplied by LLC.The maximum size of this field is 1500 octets for a basic frame,1504 octets for a Q-tagged frame,and 1982 octets for an envelope frame.

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___________ provides a low-cost,easily scalable approach to achieving very high data rates and is used in storage area networks (SANs)and for other types of storage networking.

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Every MAC frame must include two addresses,which allows an alternative receiver to be designated in the event an error occurs.

A) True
B) False

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Which of the following is not one of the speeds found in a modern Ethernet LAN?


A) 10 Mbps
B) 100 Mbps
C) 100 Gbps
D) 10 Gbps

E) A) and B)
F) A) and C)

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This option makes use of four pairs of Category 5 UTP to support devices over a range of up to 100 m.


A) 1000BASE-SX
B) 1000BASE-T
C) 1000BASE-LX
D) 1000BASE-CX

E) B) and D)
F) All of the above

Correct Answer

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In general,performance on a LAN _________ with an increase in the number of devices or the length of the wire.


A) increases
B) decreases
C) fluctuates
D) does not change

E) B) and C)
F) A) and D)

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The frame format for the 802.3 protocol consists of:


A) preamble
B) SFD
C) destination address
D) all of the above

E) A) and B)
F) A) and C)

Correct Answer

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