CompTIA Interview Questions and Answers 2021

By Nandini

Last updated on Oct 25 2021

CompTIA Interview Questions and Answers 2021

Most Frequently Asked CompTIA Interview Questions 2021


The world of IT Industries complex is a highly competitive field and maintains a better position in this field. One has to stay ahead of the competition by earning well-known certifications and credentials. This technology is booming day by day. It has pushed envelops for the industry too. Every company is adding demanding for IT officials to manage their technological end. When it comes to earning any ITea certification, one has to closely introspect the Pros and cons of a certificate. It is said so because there are many certification providers around the world. But there are a handful of genuine vendor-neutral certification providers In the Market. In addition to that, one has to earn such a certification that Does not bind to a specific geography. Instead, an IT certification should Have a global presence in the Market. Such a certificate that is not tied to any boundary or specific geography. 


Essential Aspects of CompTIA certification


 There are other essential aspects that an individual observes Before achieving an IT certification. Some of the crucial elements are:

  • Increasing job prospects.
  • Increase in the salary range.
  • Gaining new skills.
  • Attaining a better position in any organization.
  • Getting better recognition.

Many promising IT certifications provided by globally recognized platforms Ask for at least one or two years of unique experience In any area of Work in IT. And there are a handful of Organisations that provide. Entry-level certification that can help An IT fresher to enter into the field of IT. And one of the famous ITH certification provided Is CompTIA. 


About CompTIA Certifications


CompTIA provides certifications for professionals, But it also takes care of the IT fresher who wants to enter the field. However, achieving the CompTIA certification In any sector of it is not that easy. Instead, one has to grind through Various training courses—interview questions to get a CompTIA professional In the IT field.  

This article will be more vocal about the interview questions of CompTIA Certification. We have compiled Numerous essential interview questions that can help A person. They will not only pass the CompTIA interview. But it will also make sure that a person cracks all these questions and becomes a successful CompTIA developer. All these interview questions are well-structured and well-framed for individuals ranging from entry-level to the professional level.


Top CompTIA Interview Questions 


Q1. Define Personal Computer.

A personal computer can be defined as a System o component that works together. The acronym used for a personal computer is a PC. It is not an operating system or an application, But it is computer hardware. There are various components of a personal computer, And those components are:

  1. A central processing unit (CPU)
  2. A Motherboard
  3. A Memory (RAM)
  4. A hard drive Or storage
  5. A power supply
  6. A video card
  7. A mouse and a keyboard
  8. A Network car
  9. A cooling fan

Q2. What do you mean by Gateway?

A gateway can be defined as a hardware device. And one can connect this hardware device to two or more networks at a time; it can be denoted as a router, firewall, server, or any other device Which works as a gateway. The significant role of a gateway is to regulate traffic in the network.

Q3. Differentiate between a Gateway and a Router. 

The difference between a gateway and a router Is that a gateway Conveys data between different networks. At the same time, a router conveys data between two similar systems.

Q 4. What are the various types of Hard Disc Drive Connectors?

The rigid drive connectors are connected with A variety of integrated disc controllers. And the different types of Hard Disc Drive Connectors are; ITE, EITE, PATA, SATA, SCSI, et cetera.  

Q5. Define the functions of an operating system.

An operating system can be defined as software that supplies. That helps computers run applications. Different types of applications. Various functions of the operating system are:

  1. It has to manage the RAM Or memory of a computer.
  2. It helps the user to connect any type of device On their computer.
  3. It provides a user with a graphical interface.
  4. It secures the data of a computer.
  5. It helps the user to connect To various networks.
  6. It helps to manage files and folders on the computer.
  7. It manages and monitors A series of applications and processes.

 A user has to make sure that the application they installed should be compatible with their operating system. As every application is designed specifically for A particular type of operating system. Like Windows XP, Windows Vista, LINUX, and MAC so on.

Q 6. What do you mean by system files?

Finds like registry data files, INI, NTLDR, COM, and SYS Are known as System files. Each of these files works differently To serve a particular purpose.

  • Registry Data files to store databases of low-level settings for the Windows operating system
  • The INI Permits a user to choose a Suitable operating system. While it also helps a user to choose Different boot options for their operating systems.
  • The NTLDR Is a boot loader. It is generally found in the active disk partition. It is written as "Boot.ini" When XP is selected. It runs the comment; further, it runs the ntoskml.exe, and then it runs hal.dll. After running these commands, it reads the registry data files and loads the device drivers.
  • The COM Helps the user to get information about the hardware run by "ntldr."
  • The SYS Is a system file that is used to boot windows. It is used to boot windows from SCSI disc drivers.

 Q7. Describe the different methods of installing an operating system.

There are various known methods to install any operating system. For every end-user, the operating systems are installed by the computer technicians. So it is evident that an end-user Will never understand the different methods put in to install an operating system. However, a technician's job is to understand and learn about various ways and methods of installing operating systems into a computer.

There are four methods of installing an operating system into a computer. And those methods are:

  • Boot media- CD
  • Alternatives to boot media- DVD, floppy, or USB.
  • Drive Imaging- Ghost
  • Network installation Method That are automated deployment services Or remote installation services.

Q 8. Tell us about the necessary hardware parts that you need to get Your Personal Computer working.

A person's computer's essential hardware parts denote a computer case, A monitor, keyboard, mouse, and power cord. Every hardware part of a personal computer is essential. It plays an essential role in helping computer work Normally and precisely. 

Q 9. What do you mean by a graphics card or a graphics driver?

Graphics Card is an essential component of a computer That consists of a computer's graphic components. There is a separate slot In which a graphics card is plugged in. And this load for the graphics card is situated in the motherboard. And this is the reason why it is called a graphics card. A user needs to buy and plug-in a graphics card into the motherboard off with the CPU Of their personal computer. In laptops, there is no such requirement, As laptops come along with a built-in graphics card.

A graphics driver is another component That is different from a graphics card. But without the availability of a graphics driver, A graphics card cannot be used in a computer. Generally, a graphics driver is defined as a computer program after installing the graphics card. It plays a significant role in controlling and monitoring the Response of graphics components In a computer. 

Q 10. What do you mean by a motherboard?

The motherboard is the backbone of a computer. It can be defined as a platform that connects various parts of a computer. It helps connect sound drivers, video drivers, graphics cards and hard drives, And the CPU.

 Q11. What do you mean by modem?

The modem is an acronym for a modulated-demodulator. It can be defined as a device that helps to convert the Telephonic waves and cable waves. And it processes those waves into the computer. The primary function of a murder mystery And convert Telephone Nick and cable waves To facilitate communication.

Q12. What is cache RAM?

The computer user creates any type of data. And the computer Stores those data regularly to provide better output For any input. The place where all these data are stored regularly is called cache RAM. The abbreviation for cache RAM is SRAM. It can be defined as a Small and compact high-speed memory, situated just behind the CPU as it stores every daughter of a computer. So, a processor always cheques into the SRAM before doing something else.

Q 13. Define FireWire.

FireWire is such a device that helps in transferring every bit of information between various types of digital devices. It is a bit versatile in transferring different types of information and data. Different digital devices. It is even capable of transferring Information, Between audio and video equipment and devices. To use this device, one has to plug and unplug it while the power is on. The moment it is plugged into the computer, the computer responds to a FireWire device immediately. When the fire where is plugged into a computer, Then the transfer of various information starts immediately.

Q 14. What do you mean by microprocessor?

Microprocessors as those devices That are capable of taking inputs, processing inputs, and giving out outputs. A microprocessor is a compact, programmable, multifunctional device. Back then, a microprocessor's function was to integrate data from the CPU through one or more integrated circuits. But now, with the enhanced technologies, The CPUs have become microprocessors themselves. The functionality of any microprocessor relies upon symbols and numbers. And integrating only one powerful microprocessor with the CPU Saves an ample amount of power is needed to process any type of data.

Q 15. Define GUI.

The GUI Stands for the graphical user interface. It is designed for the betterment of the user. And to enhance user experience with their computers. It allows the user to Point, drag, And click on icons and objects on the monitor with the help of a pointing device like a mouse. Back then, Various commands were used to provide a computer with some input. And the graphical user interface technology has And Need of providing input for every little work On the computer. Microsoft First introduced the graphical user interface technology. And since its inception, there have not been many changes In the graphical user interface. 

Q 16. Explain how to set up a wireless network.

The first thing that is required to set a wireless network Is a wireless adapter. Pause this. Then a set of wireless routers are required to set up a complete all wireless network. Further access points are also needed to split the network. In general, access points are usually installed after installing the Wireless routers. After that, the access points And wireless routers are channelized with the help of a wireless antenna. The wireless antenna helps to put out a strong radio signal.

Finally, a wireless repeater should be installed to increase wireless signals for users who do not get many signals. Nowadays, with enhanced technologies, laptops and other systems come with inbuilt wireless adapters. So there is no need to bring wireless adapters separately to set a wireless network.

Q 17. How would you explain DRAM? 

 DRAM stands for dynamic random access memory. Its primary function is to store every Minute Data propagated from the computer in a single circuit. The DRAM Gives shifting between two states charged or being discharged, so its value Stays between 0 And 1.

Q 18. Define IP addresses.

In layman's terms, IP addresses can be defined as the name of a computer. Every computer which runs on the web communicates through IP addresses. It allows various web platforms To identify any computer system before transferring any data Into it. IP addresses help the web services to develop and manage the Integrity of the network. In technical terms, IP addresses are called the ITentifiers of any computer. The IP addresses are called identifiers for a day consisting of the vital information of a computer's location, information about the user, and other such Data.

Q 19. What is the OSI model?

 OSI model stands for Operating system interconnection. Its primary function is to set up a Network limit. It limits the network to attach; Protocol since 7 

Specified layers. The best example of The OSI model Our email and directory.

Q 20. Describe the network.

A network can be described as a bridge between two or more computers that allows Them to communicate with each other. Network allows. Two computers to exchange data like files, Screens, Messages, Commands like printing, etc. Does the working process often depend on how two or more computers are connected? The process of a network. The working process often networks highly depends upon How Two or more computers are connected. From telephone cables 2 connecting any device through satellites, A network is created. And without creating a network, it is not possible to transfer or exchange any type of data or files from one device to another. When it comes to networks, Then there are many types of networks. And some of the most popular types of networks are LAN, WAN, etc. The LAN Network is used to connect two computers in a local area. At the same time, WAN is used to increase the range of network Across various computer systems.

Q 21. Define VPN.

The VPN is an acronym for Virtual Private Network. Generally, the virtual private network Is used to provide security and privacy to a private and public network—to secure any network by connecting with remote servers with a dial-up connection.

Q 22. How is it possible to recover information from a virus-infected system?

To recover information from a virus-infected system, the user must install an operating system. After installing an operating system and they have to update the antivirus in the system. Then the user can connect a hard drive to the system. Here a hard drive will act as a secondary drive for an infected system. Then the user has to clean and scan the hard drive. And by doing so, All the required data can be. They were copied into the system.

Q 23. When it comes to boot operations, How would you define BIOS?

 BIOS stands for the basic input-output system. It can be defined as the most primitive way of communicating with a computer. It provides the user with a platform to perform necessary Actions like changing the boot's order and regulating system tasks.

Q 24. What is the meaning of RIP?

The RIP stands for Routing information protocol. The primary function of routing information protocol Is to exchange and data Among the routers.

Q 25. Define DHCP.

The Dynamical Host Configuration Protocol or DHCP Is a type of protocol that permits any particular IP address as soon as possible. By allowing any specific IP address, DHCP Helps a computer to connect with the world web.

Q 26. What do you mean by circular logging?

Circular logging can be defined as a type of logging, of which Helps in storing important transactional logging. The process is in the Windows dictionary. It circulates and expands the first log file. Doing so makes sure that the log files do not take space in the hard disk.

Q 27. What do you mean by proxy servers? How are they able to protect A system from computer networks?

Proxy servers can be defined as those servers that help prevent external users from identifying a particular IP address. The processor was secured. Such type of IP addresses that belong to an internal network. The following mechanism of making virtual networks. Those virtual networks are not visible to external users. 

By creating a virtual network, the proxy servers make it impossible for the external users to identify a specific IP Address.

Q 28. Describe netstat

The next step is a utility program. Its primary function is to give Information about the Present Transmission Control, Transmission Protocol, and Internet Protocol in any connection settings.

Q 29. Differentiate a domain and a workgroup.

 The difference between a domain and a workgroup Depends upon The location of a computer network. If a computer is connected through a home network, then It becomes a part of the Workgroup. And when a computer is connected through A network of workplace or workplace network, it becomes a part of a domain.

Q 30. Distinguish between attenuation, distortion, and noise.

 When signals pass through a medium, those signals may lose some energy While traveling Through a medium. Any signal loses. Its energy Due to the resistance of any medium. And such loss of energy of Any signal is defined as attenuation.

When traveling through any medium, a signal may change its shape. And when the shape or form of a signal is changed While passing through a medium, such phenomena are known as distortion.

 When any signal passes through some electrical or electromagnetic energy, The quality of such signals may Deplete. And such depletion or degradation of signal due to electromagnetic energy is known as noise.


Before you prepare for the CompTIA developer interview, you should develop the mindset of a developer. By this, we mean you need to have clarity about the job description and the roles and responsibilities expected from you. These interview questions are industry-standard questionnaires that are chosen from hiring websites and job boards. These questions are quintessential for any developer to go through and clear the interview with flying colors.


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About the Author

Sprintzeal   Nandini

With over 3 years of experience in creating informative, authentic, and engaging content, Nandini is a technology content writer who is skilled in writing well-researched articles, blog posts, newsletters, and other forms of content. Her works are focused on the latest updates in E-learning, professional training and certification, and other important fields in the education domain.

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