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Operating System

Description: cs Operating System
Number of Questions: 15
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Tags: cs Operating System
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Which of the following replacement algorithms removes the block that has been in the cache for the longest time?

  1. Direct memory access

  2. Least recently used algorithm

  3. First-in first-out replacement algorithm

  4. Random replacement algorithm

  5. Interrupt-controlled I/O


Correct Option: C
Explanation:

This replacement algorithm removes the block that has been in the cache for the longest time.

Which of the following is an error caused due to a bug in program; for example, executing an illegal instruction?

  1. Fatal error

  2. Normal exit

  3. Sharing

  4. Error exit

  5. Context switching


Correct Option: A
Explanation:

Fatal error is the error caused by process due to a bug in program; for example, executing an illegal instruction.

___________ occurs when the process referring to the memory address is not present in the main memory.

  1. Memory fault

  2. Zombie

  3. Trap

  4. Clock interrupt

  5. Context switching


Correct Option: A
Explanation:

Memory fault occurs when a process refers to a memory address is not present in the main memory.

Which of the following components of Point to Point Protocol (PPP) establishes and configures different network layer protocols?

  1. Integrated Services Digital Network (ISDN)

  2. Linker

  3. Link Control Protocol

  4. Network Control Protocol

  5. Loaders


Correct Option: D
Explanation:

This component of Point to Point Protocol (PPP) is used to establish and configure different network layer protocols.

Which of the following segments of TCP is a control bit that contains the value of the next sequence number that the receiver is expected to receive?

  1. Acknowledgement number

  2. Sequence number

  3. Data offset

  4. Data formatting

  5. Flow control


Correct Option: A
Explanation:

This segment of TCP is a control bit that contains the value of the next sequence number that the receiver is expected to receive.

Which of the following protocols of TCP/IP informs the source host about errors in datagram processing?

  1. Address Resolution Protocol (ARP)

  2. Internet Control Message Protocol (ICMP)

  3. Internet Group Management Protocol (IGMP)

  4. All of these

  5. None of these


Correct Option: B
Explanation:

This protocol of TCP/IP informs the source host about errors in datagram processing.

Which of the following languages was originally called 'Oak'?

  1. PL-1

  2. C++

  3. Java

  4. Primitive

  5. Non-numeric


Correct Option: C
Explanation:

This language was originally called 'Oak' which was developed by Sun Microsystems of USA in 1991.

Which of the following GUI based languages is used to create tight and fast window applications and device drivers?

  1. Visual C++

  2. Javac

  3. Visual Basic

  4. C#

  5. Appletviewer


Correct Option: A
Explanation:

This language is used to create tight and fast window applications and device drivers.

Which of the following is/are error(s) that occur during execution of a program?

  1. Logical errors

  2. Compile-time errors

  3. Applets

  4. Run-time errors

  5. Assembler


Correct Option: D
Explanation:

These are the errors that occur during execution of a program.

What would be the constant value in MsgBox for displaying the group of vbOKCancel option in the MsgBox?

  1. '1'

  2. '0'

  3. '2'

  4. '3'

  5. None of these


Correct Option: A
Explanation:

This value is used to display vbOKCancel option in the MsgBox.

In VB, which of the following controls can provide access to a specific column or a set of columns in a data source through data control or through remote data?

  1. Data aware control

  2. ODBC

  3. OLE container control

  4. Active X control

  5. JDBC driver manager


Correct Option: A
Explanation:

In VB, this control can provide access to a specific column or a set of columns in a data source through a data control or through remote data.

Which of the following properties of common dialog control determines the filter value to be displayed by default?

  1. FileName

  2. Filter

  3. Static

  4. FilterIndex

  5. Void


Correct Option: D
Explanation:

This property of Common Dialog control determines which filter value will be displayed by default.

Which of the following components of operating system manages many kinds of user programs to system programs like printer spooler, name servers, file servers etc.?

  1. Main-memory management

  2. File management

  3. Process management

  4. Application program

  5. Hardware


Correct Option: C
Explanation:

This component of operating system manages many kinds of user programs to system programs like printer spooler, name servers, file servers etc.

What do we call the communication of processors with one another through communication lines?

  1. Networking

  2. Demand fetch

  3. Protection system

  4. Command interpreter system

  5. Selective fetch


Correct Option: A
Explanation:

Networking is the communication system that allows communication of processors with one another through communication lines.

Which of the following categories of unshielded twisted pair cable is more suitable for higher bandwidth of 250MHz and 600MHz?

  1. Node delay

  2. CAT6 and CAT7 cables

  3. CAT3 cable

  4. CAT5 cable

  5. Transmission delay


Correct Option: B
Explanation:

This category of unshielded twisted pair cable is more suitable for higher bandwidth of 250MHz and 600MHz.

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