Unit 2 - Data transmission (IGCSE)

Unit 2 - Data transmission (IGCSE)

Assessment

Flashcard

Computers

10th Grade

Practice Problem

Medium

Created by

Computer Studies

Used 1+ times

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37 questions

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1.

FLASHCARD QUESTION

Front

What is a data packet?

Back

A small part of a message/data that is transmitted over a network; after transmission, all the data packets are reassembled to form the original message/data.

2.

FLASHCARD QUESTION

Front

What does a packet header contain?

Back

The IP addresses of the sender and receiver, and includes the packet number which allows reassembly of the data packets.

3.

FLASHCARD QUESTION

Front

What is the purpose of a packet trailer?

Back

Indicates the end of the data packet and includes a cyclic redundancy check (CRC) for error checking.

4.

FLASHCARD QUESTION

Front

What is cyclic redundancy check (CRC)?

Back

An error checking method in which all the 1-bits in the data packet payload are added, and the total is stored in the packet trailer; the same calculation is repeated at the receiving station.

5.

FLASHCARD QUESTION

Front

What is the payload in a data packet?

Back

The actual data being carried in a data packet.

6.

FLASHCARD QUESTION

Front

What is a node in a network?

Back

Stages in a network that can receive and transmit data packets; routers are nodes in communication networks.

7.

FLASHCARD QUESTION

Front

What is packet switching?

Back

A method of transmission in which a message is broken into many data packets which can then be sent along pathways independently of each other.

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