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Data Communication Networks And Reference Models MCQ

A url is a ____-part addressing scheme

Four

1976

1981

Five

Answer

Correct Answer: Four

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One task of the ____ layer in a lan is to handle error detection using a crc.

Transport

Data Link

Application

Network

Answer

Correct Answer: Data Link

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In a ring network, each workstation acts as a(n) ____ for the transmission.

Repeater

Amplifier

Terminator

Manager

Answer

Correct Answer: Repeater

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A protocol analyzer is also known as ____.

Financial

True

False

Sniffer

Answer

Correct Answer: Sniffer

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________ is a method for addressing, creating, updating, or querying relational databases.

Star

SQLB

Server

Disassociation

Answer

Correct Answer: SQLB

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Select correct type of line configuration:

Link

Dedicated point

Multipoint

Single point

Answer

Correct Answer: Multipoint

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Half duplex means data transferred and received but not at the same time:

True

False

Answer

Correct Answer: True

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Star topology does not allow direct traffic between devices:

True

False

Answer

Correct Answer: True

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Which network has connectivity range up to 10 meters?

LAN

MAN

PAN

WAN

Answer

Correct Answer: PAN

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OSI model means:

Open systems interconnection

Operating system interconnection

Operating source interconnection

Open source interconnection

Answer

Correct Answer: Open systems interconnection

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Data communications system depends on four fundamental characteristics.

Timeliness

Receiver

Sender

Medium

Answer

Correct Answer: Timeliness

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Select the wrong data communication system component:

Protocol

Receiver

Transits

Medium

Answer

Correct Answer: Transits

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For data communications to occur, the communicating devices must be part of a communication system made up of a combination of?

WAN and LAN

Full duplex and half duplex

Hardware and software

None

Answer

Correct Answer: Hardware and software

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Time required for a message to travel from one device to another:

Wait time

Response time

Transit time

Dialogue time

Answer

Correct Answer: Transit time

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00 represented by which pixel:

Dark gray pixel

Black pixel

Light gray

White pixel

Answer

Correct Answer: Black pixel

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A data communications system has how many components:

Answer

Correct Answer: 5

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Correct method for full duplex mode of communication:

One device sends and other device receives and vice versa

One device can send other device can only accepts

Both stations can transmit and receive data at the same time

None

Answer

Correct Answer: Both stations can transmit and receive data at the same time

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What is Unicode?

Characters from A to Z

Only few languages are supported

Represents symbol or characters used in any language

Supports only few characters

Answer

Correct Answer: Represents symbol or characters used in any language

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We often need more throughput and less delay:

True

False

Answer

Correct Answer: True

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If one link fails, only that link is affected. All other links remain active. Which topology does this?

Bus topology

Star topology

Mesh topology

Physical topology

Answer

Correct Answer: Star topology

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