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Data Transmission and Error Detection Quiz

Authored by Christabel Quarshie

Computers

11th Grade

Used 1+ times

Data Transmission and Error Detection Quiz
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13 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following is a key feature of the ARQ protocol?

Data encryption

Packet acknowledgment

Data compression

Parallel processing

Answer explanation

The ARQ (Automatic Repeat reQuest) protocol primarily relies on packet acknowledgment to ensure reliable data transmission. It requires the receiver to acknowledge received packets, allowing the sender to retransmit lost packets.

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What happens to the packets after a NACK is received in Go-Back-N ARQ?

They are stored

They are resent

They are ignored

They are encrypted

Answer explanation

In Go-Back-N ARQ, when a NACK (Negative Acknowledgment) is received, it indicates that a packet was not received correctly. Consequently, all subsequent packets are resent to ensure data integrity.

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the main disadvantage of Stop-N-Wait ARQ?

High complexity

Slow data transmission

High error rate

Requires large bandwidth

Answer explanation

The main disadvantage of Stop-N-Wait ARQ is slow data transmission. This protocol waits for an acknowledgment after each packet, leading to idle time and reduced throughput, especially in high-latency networks.

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the main function of buffering in Selective Repeat ARQ?

To discard packets

To resend packets

To handle out-of-order frames

To ignore packets

Answer explanation

The main function of buffering in Selective Repeat ARQ is to handle out-of-order frames. This allows the receiver to store frames that arrive out of sequence until the missing frames can be received and processed.

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which layer is directly above the Data Link Layer in the OSI model?

Network Layer

Physical Layer

Transport Layer

Application Layer

Answer explanation

The Network Layer is directly above the Data Link Layer in the OSI model. It is responsible for routing data packets between devices across different networks, making it the correct choice.

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the purpose of using parity in ECC?

To detect errors

To increase data speed

To compress data

To encrypt data

Answer explanation

The purpose of using parity in ECC (Error Correction Code) is to detect errors in data transmission or storage. Parity bits help identify discrepancies, ensuring data integrity.

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the parity bit for the last column in the ECC example?

1

0

2

3

Answer explanation

The parity bit for the last column is determined by counting the number of 1s. If the count is odd, the parity bit is 1; if even, it's 0. In this case, the count is odd, so the correct parity bit is 1.

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