Error Handling and Recovery in Operating Systems: A Comprehensive Guide

Question 1

Which error handling technique employs extra bits to detect and correct errors in data transmission?

Accepted Answer

Error correction codes

Answer

Parity checking

Answer

Checksum

Answer

RAID configuration

Question 2

What is the primary function of a RAID configuration?

Accepted Answer

Enhance data reliability

Answer

Increase data transmission speed

Answer

Decrease data storage costs

Answer

Simplify data management

Question 3

Which RAID level offers the highest level of data protection?

Accepted Answer

RAID 10

Answer

RAID 0

Answer

RAID 1

Answer

RAID 5

Question 4

What is the specific role of parity bits in error handling?

Accepted Answer

Detect single-bit errors

Answer

Correct single-bit errors

Answer

Identify the location of errors

Answer

Prevent errors from occurring

Question 5

Which option is NOT an advantage of RAID 1 mirroring?

Accepted Answer

Reduced cost

Answer

High data availability

Answer

Improved performance

Answer

Enhanced data security

Question 6

What is a main advantage of RAID 5 over RAID 1 for data storage?

Accepted Answer

Increased storage capacity

Answer

Higher data transfer rates

Answer

Lower hardware costs

Answer

Improved fault tolerance

Question 7

What is the primary objective of error recovery mechanisms in an operating system?

Accepted Answer

Restoration of system functionality after errors

Answer

Accurate error identification

Answer

Prevention of error recurrence

Answer

Enhancement of system performance

Question 8

Which error handling technique involves automatically retransmitting data when errors are detected in the transmission?

Accepted Answer

Automatic Repeat reQuest (ARQ)

Answer

Parity checking

Answer

Error correction codes

Answer

RAID configuration

Question 9

Error correction codes (ECCs) are used to:

Accepted Answer

Detect and correct multiple-bit errors in transmitted data

Answer

Replicate data on multiple disks

Answer

Provide data encryption

Answer

Improve I/O performance

Question 10

Automatic Repeat reQuest (ARQ) is used in which layer of the TCP/IP model?

Accepted Answer

Transport layer

Answer

Network layer

Answer

Data Link layer

Answer

Application layer

Question 11

RAID 6 provides a higher level of data protection than RAID 5 because it:

Accepted Answer

Uses two parity disks instead of one for redundancy

Answer

Mirrors data on multiple disks

Answer

Employs advanced error correction algorithms

Answer

Stores data in a distributed manner

Question 12

Which error handling method employs additional bits to detect errors in transmitted data?

Accepted Answer

Parity checking

Answer

Error correction codes

Answer

RAID configurations

Answer

Data scrubbing

Question 13

The primary purpose of Error Correction Codes (ECCs) is to:

Accepted Answer

Detect and correct errors in data

Answer

Provide data redundancy for storage

Answer

Prevent data loss during disk failures

Answer

Enhance data access speed

Question 14

Which RAID configuration replicates data on multiple disks, ensuring data redundancy?

Accepted Answer

RAID 1

Answer

RAID 0

Answer

RAID 5

Answer

RAID 6

Question 15

A key advantage of RAID configurations is:

Accepted Answer

Increased data reliability

Answer

Enhanced data access speed

Answer

Reduced storage costs

Answer

Simplified data backup

Question 16

In Linux, which command is used to automatically repair file systems after errors?

Accepted Answer

fsck

Answer

chkdsk

Answer

repair

Answer

fixfs

Question 17

Which of the following is NOT a responsibility of an operating system's error handling mechanism?

Accepted Answer

Error prevention

Answer

Error detection

Answer

Error recovery

Answer

Providing user feedback

Question 18

Which error handling technique involves maintaining records of errors?

Accepted Answer

Error logging

Answer

Error correction

Answer

Fault tolerance

Answer

Data scrubbing

Question 19

Which of the following is **not** an error handling technique in Input/Output (I/O) systems?

Accepted Answer

Load balancing

Answer

Parity checking

Answer

Error correction codes

Answer

Buffering

Question 20

What is the primary purpose of parity checking in I/O systems?

Accepted Answer

To detect single-bit errors in data transmission

Answer

To correct single-bit errors in data transmission

Answer

To prevent errors from occurring in data transmission

Answer

To identify and isolate faulty components in the I/O system

Question 21

What is the main advantage of using Redundant Array of Independent Disks (RAID) configurations for error recovery?

Accepted Answer

Increased data reliability and redundancy

Answer

Enhanced data access speeds

Answer

Reduced storage space requirements

Answer

Lower implementation costs

Question 22

Which RAID level provides mirroring of data for maximum protection and data redundancy?

Accepted Answer

RAID 1

Answer

RAID 0

Answer

RAID 5

Answer

RAID 10

Question 23

What is the fundamental difference between hardware-based and software-based RAID implementations?

Accepted Answer

Hardware-based RAID uses dedicated hardware, while software-based RAID utilizes the system's CPU and memory for RAID operations.

Answer

Hardware-based RAID offers faster performance and reliability, while software-based RAID is more cost-effective.

Answer

Software-based RAID provides greater flexibility and ease of management, while hardware-based RAID is more secure.

Answer

There is no significant difference between hardware-based and software-based RAID implementations.

Question 24

Which of the following is a potential advantage of utilizing error correction codes in I/O systems?

Accepted Answer

Enhanced data reliability

Answer

Improved system performance

Answer

Reduced data storage requirements

Answer

Simplified error handling procedures

Question 25

What is the primary function of buffering in I/O systems?

Accepted Answer

To temporarily store data and improve performance by optimizing data transfer rates

Answer

To detect and rectify errors in data transmission

Answer

To provide redundancy in case of data loss

Answer

To enhance data security by encrypting data during transmission

Question 26

What is the primary responsibility of a RAID controller?

Accepted Answer

To manage and control RAID configurations, ensuring optimal performance and data protection

Answer

To detect and correct errors in data transmission

Answer

To provide caching and buffering for improved data access speeds

Answer

To encrypt data for enhanced security

Question 27

Which RAID configuration offers the highest level of fault tolerance and data protection by duplicating data across multiple disks?

Accepted Answer

RAID 1 (Mirroring)

Answer

RAID 0 (Data Striping)

Answer

RAID 5 (Parity)

Question 28

Explain why error logging and analysis are indispensable for maintaining system stability.

Accepted Answer

It helps identify error patterns and root causes.

Answer

It facilitates the detection and correction of errors.

Answer

It optimizes system performance.

Answer

It diminishes the need for data backups.

Question 29

What is the primary purpose of parity checking in data transmission?

Accepted Answer

To detect single-bit errors

Answer

To correct single-bit errors

Answer

To prevent errors from occurring

Answer

To recover lost data

Question 30

Which error correction code is capable of correcting up to two-bit errors?

Accepted Answer

Hamming code

Answer

Reed-Solomon code

Answer

Cyclic redundancy check (CRC)

Answer

Checksum

Question 31

Define RAID 5 in terms of its data storage and protection mechanism.

Accepted Answer

Stripes data across multiple disks and uses parity information for error detection and recovery

Answer

Mirrors data across multiple disks for redundancy

Answer

Stripes data across multiple disks and uses mirroring for redundancy

Answer

Uses a single disk for data storage and relies on backups for error recovery

Question 32

Which of the following is NOT an advantage of utilizing Error Correction Codes?

Accepted Answer

Increases the available storage capacity

Answer

Enhances data reliability and integrity

Answer

Reduces the frequency of system downtime

Answer

Allows for faster recovery of corrupted data

Question 33

Differentiate between a hard error and a soft error based on their nature and impact.

Accepted Answer

Hard errors are permanent hardware failures, while soft errors are temporary software glitches.

Answer

Soft errors are permanent hardware failures, while hard errors are temporary software glitches.

Answer

Hard errors occur due to software defects, while soft errors are caused by hardware malfunctions.

Answer

Soft errors occur due to software defects, while hard errors are caused by hardware malfunctions.

Question 34

Provide an example of a common hard error that can occur in a computer system.

Accepted Answer

Disk drive failure

Answer

Memory corruption

Answer

Software crash

Answer

Virus infection

Question 35

What is the primary function of a checksum in data transmission?

Accepted Answer

Detects errors in transmitted data

Answer

Corrects errors in transmitted data

Answer

Prevents errors from occurring

Answer

Encrypts data for secure transmission

Question 36

Which of the following is NOT considered a primary objective of error handling?

Accepted Answer

System performance optimization

Answer

Error detection

Answer

Error recovery

Answer

Error prevention

Question 37

What is the role of exception handling in error management?

Accepted Answer

Intercepts and manages errors that occur during program execution

Answer

Prevents errors from occurring

Answer

Restores data after an error has occurred

Answer

Improves the efficiency of error handling routines

Question 38

Which error handling technique is NOT commonly used in I/O systems?

Accepted Answer

Bit reversal

Answer

Parity checking

Answer

Error correction codes (ECCs)

Answer

RAID configurations

Question 39

What is the primary objective of using parity checking in I/O systems?

Accepted Answer

To detect single-bit errors

Answer

To correct multi-bit errors

Answer

To improve data transfer speed

Answer

To reduce hardware costs

Question 40

Which RAID level combines mirroring and striping to provide the highest level of data protection?

Accepted Answer

RAID 10

Answer

RAID 0

Answer

RAID 1

Answer

RAID 5

Question 41

What is a key advantage of using ECCs over parity checking?

Accepted Answer

ECCs can correct multi-bit errors.

Answer

ECCs require less storage space.

Answer

ECCs are easier to implement.

Answer

ECCs provide faster data retrieval.

Question 42

What is the primary purpose of a checksum in error handling?

Accepted Answer

To verify the integrity of data during transmission or storage

Answer

To correct errors in data

Answer

To improve data transfer performance

Answer

To detect and report errors

Question 43

Which of the following is NOT a benefit of using RAID configurations?

Accepted Answer

Reduced data access speed

Answer

Increased data reliability

Answer

Improved storage capacity

Answer

Lower hardware costs

Question 44

What is the function of a hot spare in a RAID configuration?

Accepted Answer

To replace a failed drive automatically

Answer

To store backup copies of critical data

Answer

To monitor the performance of the RAID system

Answer

To provide additional storage capacity

Question 45

Which error detection and correction method divides data into blocks and adds a parity bit to each block?

Accepted Answer

Parity Checking

Answer

Cyclic Redundancy Check

Answer

RAID Configuration

Answer

Checksum

Question 46

Which error detection method generates a checksum using a mathematical algorithm and transmits it along with the data?

Accepted Answer

Cyclic Redundancy Check

Answer

Hamming Code

Answer

Parity Checking

Answer

RAID Mirroring

Question 47

Which RAID configuration replicates data across multiple disks to provide redundancy and improved fault tolerance?

Accepted Answer

RAID Mirroring

Answer

RAID 0

Answer

RAID 10

Answer

RAID 5

Question 48

Which error correction method utilizes additional bits to restore lost data in the presence of errors?

Accepted Answer

Forward Error Correction

Answer

RAID Striping

Answer

Checksum

Answer

Parity Checking

Question 49

What is the primary purpose of employing Hamming codes in error detection and correction?

Accepted Answer

Detecting and correcting both single and multiple-bit errors

Answer

Adding parity bits to data blocks

Answer

Generating a checksum for data integrity

Question 50

Which type of RAID configuration utilizes striping and parity to achieve both fault tolerance and improved performance?

Accepted Answer

RAID 5

Answer

RAID 1

Answer

RAID 0

Answer

RAID 10

Question 51

What is the main advantage of using RAID 0 for data storage?

Accepted Answer

Enhanced read and write performance

Answer

Fault tolerance

Answer

Data compression

Answer

Increased data security

Question 52

Which type of error is typically NOT handled by operating systems?

Accepted Answer

Syntax errors in application code

Answer

I/O errors

Answer

Network errors

Answer

Memory errors

Question 53

What is the primary function of the Error Control System in error recovery?

Accepted Answer

Detecting, diagnosing, and initiating appropriate corrective actions

Answer

Preventing errors from occurring

Answer

Storing error logs for analysis