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Latest Computer Hardware and Networking MCQ Objective Questions


Latest Computer Hardware and Networking MCQ Objective Questions

Computer Hardware and Networking Question 1:

Which of the following memory is used for storing software that does not need updates?

  1. Flash Memory
  2. ROM
  3. SRAM
  4. DRAM
  5. Not Attempted

Answer (Detailed Solution Below)

Option 2 : ROM

Computer Hardware and Networking Question 1 Detailed Solution

Flash Memory:

  • Flash memory is a non-volatile memory chip used for storage and for transfering data between a personal computer (PC) and digital devices.
  • It can be electronically reprogrammed and erased.
  • It is often found in USB flash drives, MP3 players, digital cameras and solid-state drives.


  • ROM stands for Read Only Memory.
  • In ROM we can only read but cannot write on it. It is non-volatile in nature. The information is stored permanently in such memories during manufacture.
  • A ROM stores such instructions that are required to start a computer. This is known as bootstrap.
  • ROM chips are not only used in the computer but also in other electronic items like washing machine and microwave oven.


  • Static Random Access Memory is a type of RAM that holds data in a static form, that is, as long as the memory has power.
  • It does not need to be refreshed.


  • DRAM is a type of RAM that stores each bit of data on a separate capacitor.
  • It is the efficient way to store data in memory, because it requires less physical space to store the same amount of data than if it was stored statically.

The correct answer is option 2 i.e ROM

Computer Hardware and Networking Question 2:

Which of the following computer hardware contains a laser?

  1. RAM
  2. CD Drive
  3. Hard Disk Drive
  4. Floppy Drive

Answer (Detailed Solution Below)

Option 2 : CD Drive

Computer Hardware and Networking Question 2 Detailed Solution

CD Drive contains a laser.

The use of laser in CD drive is:

  • CD drives are also called optical disc drives because they use laser light or electromagnetic waves to read or write data to or from a CD.
  • An infrared laser with a wavelength of 780 nanometers (nm) is employed in the CD drive.
  • A laser is used to transfer digital data (a long sequence of ones and zeros) to this disc by literally burning small ‘pits’ into the surface, with untouched areas (called ‘lands’) representing ones and burned areas representing zeros.
  • A CD drive uses a laser beam to read the data from the disk as it is spinning. It distinguishes between the pits and lands based on how the light reflects off the recording material.

Computer Hardware and Networking Question 3:

Which is the correct full form of TCP?

  1. Transmission Communication Protocol
  2. Transmission Control protocol
  3. Transmission Computer Protocol
  4. Transfer Control Port

Answer (Detailed Solution Below)

Option 2 : Transmission Control protocol

Computer Hardware and Networking Question 3 Detailed Solution

TCP (Transmission Control Protocol):

  • TCP (Transmission control protocol) is a connection-oriented reliable transport protocol.
  • It provides a process to process communications using port numbers.
  • It provides services like flow control, error control, congestion control. A packet that is sent is known as a segment in TCP.
  • In TCP, transmission requires three phases: connection establishment, data transfer, and connection termination. It uses three-way handshaking mechanism for connection establishment and termination.

Computer Hardware and Networking Question 4:

What is a “vlog”?

  1. Video Log
  2. Video blog
  3. New technology to aid in blogging
  4. Both 2 and 3

Answer (Detailed Solution Below)

Option 4 : Both 2 and 3

Computer Hardware and Networking Question 4 Detailed Solution

The correct answer is ​Both 2 and 3.

Key Points

  • Vlog:
    • It is a personal website or social media account where a person regularly posts short videos.
    • Vl og stands for a video blog and refers to a type of blog where most or all of the content is in a video format.
    • Vlogging (short for “video blogging”) is the daily practice of capturing and sharing vlogs characteristically featuring a vlogger shooting themselves at arm’s length throughout their everyday activities.

Computer Hardware and Networking Question 5:

Which of the following layers of the OSI model provides access control?

  1. Physical
  2. Presentation
  3. Session
  4. Data Link

Answer (Detailed Solution Below)

Option 4 : Data Link

Computer Hardware and Networking Question 5 Detailed Solution

The correct answer is Data Link

Important Points

  • The data link layer of the OSI model provides access control.
  • Physical Layer is responsible for the communication of the unstructured raw data streams over a physical medium.
  • Physical Layer maintains the data rate (how many bits a sender can send per second). It performs the Synchronization of bits.
  • It helps in Transmission Medium decisions (direction of data transfer).

Top Computer Hardware and Networking MCQ Objective Questions

A/an ___________ is a central server on a computer network that enables connected clients to access the server’s storage capacities.

  1. web server
  2. application server
  3. print server
  4. file server

Answer (Detailed Solution Below)

Option 4 : file server

Computer Hardware and Networking Question 6 Detailed Solution

The correct answer is a file server.

Key Points

  • A file server is used to manage files on a server where it can be uploaded, shared or downloaded by other available systems which are connected to that network.
  • It is a central server on a computer network that enables connected clients to access the server’s storage capacities.
  • File servers offer users a central storage place for files on internal data media, which is available to all approved clients.
  • The server administrator defines strict guidelines regarding which client have access rights -
    • For example, the design or file authorizations of the particular file system empower the administrator to set which files can be seen and opened by a specific client or client group and whether information must be seen or added altered, or erased.
  • With file servers connected with the web and designed appropriately, clients can't just access the files through the neighborhood organization but also benefit from remote access.
  • This enables files to be accessed and saved on the file server even when users are on the go.
  • All modern operating systems such as Windows, Linux, or macOS can be used on a file server, although the devices available in the network need to be compatible with the operating system.

Hard disk in a computer is

  1. Temporary magnetic storage
  2. Permanent magnetic storage
  3. High capacity optical disk storage
  4. High capacity CDROM

Answer (Detailed Solution Below)

Option 2 : Permanent magnetic storage

Computer Hardware and Networking Question 7 Detailed Solution

The correct answer is Permanent magnetic storage.

Hard disk:

  • A hard disk drive (sometimes abbreviated as a hard drive, HD, or HDD) is a non-volatile data storage device.
  • Hard disk, Magnetic storage medium for a microcomputer.
  • Hard disks are flat, circular plates made of aluminum or glass and coated with magnetic material.
  • Hard disks for personal computers can store up to several gigabytes (billions of bytes) of information.

Important Points

Short Form



Advanced Micro Devices


Advanced Technology Attachment


Advanced Technology Extended


Compact Disc


Compact Disc-Read-Only Memory


Compact Disc-Rewritable


Commonly Operated Machine Particularly Used In Technical And Educational Research


Central Processing Unit


Digital Versatile Disc


Digital Video Disc-Random Access Memory


Digital Video Disc-Read Only Memory


Digital Video Disc-Recordable


Digital Video Disc-Rewritable


Double Data-Rate


Double Data-Rate Random Access Memory


Floppy Disk Drive


Hard Disk Drive


High Definition Media Interface


Integrated Drive Electronics


Liquid Crystal Display


Light Emitting Diode


Random Access Memory


Read Only Memory


Hard Disk Drive


Floppy Disk Drive


Peripheral Component Interconnect


Solid State Disk


Switch Mode Power Supply


Universal Serial Bus


Video Graphics Array


Video Random Access Memory

Which of the following is NOT an application software?

  1. Adobe Photoshop
  2. Windows 7
  3. MS Word
  4. Avast Antivirus

Answer (Detailed Solution Below)

Option 2 : Windows 7

Computer Hardware and Networking Question 8 Detailed Solution

Software is nothing but a set of instructions.

Softwares are majorly classified into two categories:

1) System Software

2) Application Software

  • Application Software also referred to as end-user programs or productivity programs is software that aids the user in executing tasks like doing online research, jotting down notes, setting an alarm, graphics designing, keeping logs of accounts, performing calculations, or even playing games. They lie above the system software.
  • They are different from system software in a way that they are used by the end-user and are specific in their functionality or tasks and perform the task that they are created to do. For example, the application Browser is specifically designed for the purpose of browsing the internet, or MS PowerPoint is an application used specifically for making presentations.
  • Adobe Photoshop, MS Word, Antivirus Softwares are examples of Application Software.

Features of application software are as follows:

  • Close to the user
  • Easy to design
  • More interactive
  • Slow in speed
  • Generally written in a high-level language
  • Easy to understand
  • Easy to manipulate and use
  • Bigger in size and requires large storage space

System software:

  • The system software is the set of programs that enables your computer's hardware devices and Application software to work together.
  • The system software is software designed to provide a platform for other software.
  • System Software is designed to control the operation and extend the processing functionalities of a computer system.

RS 232 communication is

  1. Full duplex
  2. Half duplex
  3. Simplex
  4. Command response system

Answer (Detailed Solution Below)

Option 1 : Full duplex

Computer Hardware and Networking Question 9 Detailed Solution


The data flow between the two devices can be in simplex, half-duplex, and full-duplex modes.

Simplex: In Simplex, communication is unidirectional. Only one of the devices sends the data and the other one only receives the data.

Example: A CPU sends data while a monitor only receives data.

Half-Duplex: In half-duplex both the stations can transmit as well as receive but not at the same time. When one device is sending others can only receive and vice-versa

Example: A walkie-talkie.

Full Duplex: In Full-duplex mode, both stations can transmit and receive at the same time.

Example: Mobile phones


  • RS-232 is a bi-directional (Full duplex) point to point communication link.
  • Two independent channels are established for two-way (Full-Duplex) communication.
  • This can be better understood with the following diagram:

What is the name of the software that allows us to browse web pages?

  1. Mail client
  2. FTP client
  3. Browser
  4. Messenger

Answer (Detailed Solution Below)

Option 3 : Browser

Computer Hardware and Networking Question 10 Detailed Solution

An internet browser or simply called a browser is used to view a webpage.

It is used to access and view websites.

Common web browsers include Microsoft Internet Explorer, Google Chrome, Mozilla Firefox, and Apple Safari.

Important Point-

1. A mail Client is a desktop program that allows users to access their emails on their computer without having to log in via the web

2. An FTP Client is software designed to transfer files back-and-forth between a computer and a server over the Internet.

Which topology is used for a central Network controller

  1. Star
  2. Mesh
  3. Ring
  4. Point to Point

Answer (Detailed Solution Below)

Option 1 : Star

Computer Hardware and Networking Question 11 Detailed Solution

  • To provide centralized access to the network a hub device is used
  • Hub is a node that broadcasts data to every computer connected to it.
  • Hub is used in the star topology
  • Mesh, ring, bus topologies don't need hubs
  • The network nodes connect to ports in the hub via a cable such as UTP or coaxial.

An index register in digital computer is register to be used for

  1. performing arithmetic and logic operations
  2. temporary storage of result
  3. counting number of times a program is executed
  4. address a modification purpose

Answer (Detailed Solution Below)

Option 4 : address a modification purpose

Computer Hardware and Networking Question 12 Detailed Solution

Index register:

An index register in digital computer is register that is used to address a modification purpose.

An index register in a computer's CPU is a processor register used for modifying operand addresses during the run of a program, typically for doing vector/array operations.

How many 2k × 8 ROM chips would be required to build a 16k × 8 memory system?

  1. 2
  2. 4
  3. 8
  4. 16

Answer (Detailed Solution Below)

Option 3 : 8

Computer Hardware and Networking Question 13 Detailed Solution


ROMRead-Only Memory (ROM) chips are non-volatile memory that generally contains instructions for "booting" the computer (i.e. loading the operating system when the computer starts up).

For 2× m ROM chips we have:

1. n address lines.

2. m bit data lines.

The total capacity of ROM chips required = Number of ROM chips × Capacity of single ROM chip


Given, the capacity of single-chip = 2k × 8

Required capacity = 16k × 8

Number of ROM chips required = 16×82×8

= 8

In OSI network architecture, the routing is performed by

  1. physical layer
  2. network layer
  3. data link layer
  4. session layer

Answer (Detailed Solution Below)

Option 2 : network layer

Computer Hardware and Networking Question 14 Detailed Solution

Different networking devices and the layers on which they operate is given below:


OSI Layer




Physical Layer


Data Link Layer


Network Layer


Data Link Layer


Network Layer

The Open Systems Interconnection (OSI) model is a suggested standard for communication that was developed by the International Organization for Standardization (ISO). The OSI reference model describes how data is sent and received over a network. This model breaks down data transmission over a series of seven layers.

These 7 Layers of OSI are:

  • Layer 7: The application layer.
  • Layer 6: The presentation layer.
  • Layer 5: The session layer.
  • Layer 4: The transport layer.
  • Layer 3: The network layer.
  • Layer 2: The data-link layer.
  • Layer 1: The physical layer.

Which of the following is an output device?

  1. Magnetic Ink Character Recognition (MICR)
  2. Optical Character Recognition (OCR)
  3. Optical Mark Reading (OMR)
  4. Visual Display Unit (VDU)

Answer (Detailed Solution Below)

Option 4 : Visual Display Unit (VDU)

Computer Hardware and Networking Question 15 Detailed Solution

An output device is any piece of computer hardware equipment which converts information into human-readable form. It can be text, graphics, tactile, audio, and video. Some of the output devices are Visual Display Units (VDU) i.e. a Monitor, Printer, Graphics Output devices, Plotters, Speakers etc:

  • A Visual Display Unit is the most popular output device used for producing soft copy output generated by a computer or other electronic devices.
  • It is commonly known as a Monitor. a V.D.U. may be peripheral or may be integrated with the other components. Early V.D.U. were primarily Cathode Ray Tube (CRT) displayed and typically had a diagonal size of 13 inches or less.
="arial, helvetica, sans-serif">During the 1990s, 15" and 17" displays became standard, and some manufacturers began producing displays over 20" in size. At the turn of the century, flat panel displays became more common, and by 2006, CRT displays were hard to find.
  • Today, it is common for computers to come with VDUs that are 20" to 30" in size. Thanks to the recent growth in LCD, plasma, and LED technology, manufacturing large screens is much more cost-effective than before.

  • Note: Magnetic Ink Character Recognition (MICR), Optical Character Recognition (OCR), Optical Mark Reading (OMR) are all input devices. In computing, an 

    ong>input device is a piece of computer hardware equipment used to provide data and control signals to an information processing system such as a computer or information appliance. Examples of input devices include keyboards, mouse, scanners, digital cameras, joysticks, and microphones.

    Hence, we conclude that the Visual Display Unit (VDU) is an output device.

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