CompTIA A+ Essentials Network Certification Quiz!

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CompTIA A+ Essentials Network Certification Quiz! - Quiz

Are you preparing for CompTIA's A+ networking certification exam? Try the quiz below we have prepared on CompTIA's A+ basic networking essentials and test your knowledge regarding Networking. If you are a computer geek and possess full-fledged technical knowledge in Networking, then prove yourself by attempting this quiz and assess where you stand. This quiz focuses on the networking aspect of the CompTIA A+ exam. Read the questions carefully and answer. So, let's try out the quiz. All the best!


Questions and Answers
  • 1. 

    Which of the following cable types are most commonly used for medium-sized LANs?

    • A.

      Shielded Twisted Pair (STP)

    • B.

      Unshielded Twisted Pair (UTP)

    • C.

      British Naval Connector (BNC)

    • D.

      Attachment User Interface (AUI)

    Correct Answer
    B. Unshielded Twisted Pair (UTP)
    Explanation
    Unshielded Twisted Pair (UTP) is the most commonly used cable type for medium-sized LANs. UTP cables are cost-effective and easy to install, making them a popular choice in networking. They consist of twisted pairs of copper wires, which help to reduce electromagnetic interference. UTP cables are capable of transmitting data at high speeds and can support various network protocols. They are widely used in Ethernet networks and are compatible with most networking devices. Shielded Twisted Pair (STP) cables, British Naval Connector (BNC), and Attachment User Interface (AUI) are not as commonly used for medium-sized LANs as UTP cables.

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  • 2. 

    In which network topology do all devices connect to a central hub?

    • A.

      Bus

    • B.

      Star

    • C.

      Ring

    • D.

      Mesh

    Correct Answer
    B. Star
    Explanation
    In a star network topology, all devices are connected to a central hub, which acts as a central point of communication. This hub manages and controls the flow of data between the devices connected to it. Each device has a separate connection to the hub, allowing for efficient communication and easy troubleshooting. This topology is commonly used in Ethernet networks and provides better performance and reliability compared to other topologies like bus or ring.

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  • 3. 

    In which network topology are all devices connected with many redundant interconnections between them?

    • A.

      Bus

    • B.

      Star

    • C.

      Ring

    • D.

      Mesh

    Correct Answer
    D. Mesh
    Explanation
    A mesh network topology is characterized by having all devices connected with many redundant interconnections between them. This means that each device has multiple connections to other devices, creating a highly redundant and fault-tolerant network. In a mesh network, if one connection fails, there are alternative paths available to ensure continuous connectivity. This type of topology is commonly used in large-scale networks where reliability and fault tolerance are crucial, such as in telecommunications or military applications.

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  • 4. 

    How many layers are in the Open System Interconnection (OSI) model?

    • A.

      5

    • B.

      6

    • C.

      7

    • D.

      8

    Correct Answer
    C. 7
    Explanation
    The Open System Interconnection (OSI) model is a conceptual framework that standardizes the functions of a communication system into seven different layers. Each layer has a specific role and interacts with the layers above and below it. These layers include the physical layer, data link layer, network layer, transport layer, session layer, presentation layer, and application layer. Therefore, the correct answer is 7.

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  • 5. 

    What network component allows a computer to transmit data over a standard telephone line?

    • A.

      Modem

    • B.

      Router

    • C.

      Gateway

    • D.

      Bridge

    Correct Answer
    A. Modem
    Explanation
    A modem is a network component that allows a computer to transmit data over a standard telephone line. It converts digital signals from the computer into analog signals that can be transmitted over the telephone line, and vice versa. This enables the computer to communicate with other devices or access the internet using a dial-up connection. A router, gateway, or bridge are not specifically designed for transmitting data over telephone lines, making modem the correct answer.

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  • 6. 

    Which of the following are TRUE about MAC addresses? (Select all that apply)

    • A.

      Acronym for Medium Access Component

    • B.

      Each device on a network must have the same MAC address

    • C.

      Each device on a network must have different MAC addresses

    • D.

      MAC addresses are 12-digit hexadecimal numbers

    Correct Answer(s)
    C. Each device on a network must have different MAC addresses
    D. MAC addresses are 12-digit hexadecimal numbers
  • 7. 

    Which network protocol is the standard for sending data over networks?

    • A.

      NetBEUI

    • B.

      TCP/IP

    • C.

      IPX/SPX

    • D.

      NetBIOS

    Correct Answer
    B. TCP/IP
    Explanation
    TCP/IP is the standard network protocol for sending data over networks. It stands for Transmission Control Protocol/Internet Protocol and is the foundation of the internet. TCP/IP provides a set of rules for how data is transmitted, routed, and received between devices on a network. It is widely used and supported by various operating systems and network devices, making it the de facto standard for network communication. Other protocols like NetBEUI, IPX/SPX, and NetBIOS were used in the past but have been largely replaced by TCP/IP.

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  • 8. 

    Which Bluetooth Class is the most common?

    • A.

      Class 1

    • B.

      Class 2

    • C.

      Class 3

    • D.

      Class 4

    Correct Answer
    B. Class 2
    Explanation
    Class 2 is the most common Bluetooth class because it offers a good balance between range and power consumption. Class 1 has the longest range but consumes more power, making it less common. Class 3 has a shorter range and is primarily used for short-range communication within a room. Class 4 is not a standard Bluetooth class, so it is not commonly used.

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  • 9. 

    How many simultaneous connections to 1 device does Bluetooth support?

    • A.

      10

    • B.

      8

    • C.

      7

    • D.

      9

    Correct Answer
    C. 7
    Explanation
    Bluetooth supports up to 7 simultaneous connections to 1 device. This means that up to 7 different devices can be connected to a single Bluetooth device at the same time.

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  • 10. 

    Which of the following are disadvantages of Infrared? (Select all that apply)

    • A.

      Allows wireless data transfer

    • B.

      Both devices must be within very close proximity

    • C.

      Quick, easy to configure, and secure

    • D.

      Both devices must have a clear line of sight

    Correct Answer(s)
    B. Both devices must be within very close proximity
    D. Both devices must have a clear line of sight
    Explanation
    Infrared technology has the disadvantage that both devices must be within very close proximity. This means that the devices need to be in close physical proximity to establish a connection and transfer data. Additionally, both devices must have a clear line of sight, meaning that there should be no obstructions between them for the infrared signals to transmit effectively. These limitations restrict the range and flexibility of infrared technology compared to other wireless data transfer methods.

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  • 11. 

    Which of the following were made to replace current telephone networks which require digital-to-analog conversions?

    • A.

      Broadband

    • B.

      VoIP

    • C.

      ISDN

    • D.

      802.11x

    Correct Answer
    C. ISDN
    Explanation
    ISDN (Integrated Services Digital Network) was developed to replace current telephone networks that required digital-to-analog conversions. It is a set of communication standards that allows digital transmission of voice, video, and data over traditional copper telephone lines. Unlike traditional analog networks, ISDN enables direct digital communication without the need for conversion, resulting in improved call quality and faster data transmission speeds. Therefore, ISDN is the correct answer as it was specifically designed to replace networks that required digital-to-analog conversions.

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  • 12. 

    Which of the following correctly compares 802.11b to 802.11a? (Select all that apply)

    • A.

      802.11b is more vulnerable to other appliances operating on the same frequency, whereas 802.11a is not.

    • B.

      802.11b has better signal range and isn't easily obstructed, whereas 802.11a has shorter range and is easily obstructed.

    • C.

      802.11b is less expensive than 802.11a

    • D.

      802.11b operates at 2.4Ghz and 802.11a operates at 5Ghz.

    Correct Answer(s)
    A. 802.11b is more vulnerable to other appliances operating on the same frequency, whereas 802.11a is not.
    B. 802.11b has better signal range and isn't easily obstructed, whereas 802.11a has shorter range and is easily obstructed.
    C. 802.11b is less expensive than 802.11a
    D. 802.11b operates at 2.4Ghz and 802.11a operates at 5Ghz.
    Explanation
    The correct answer is that 802.11b is more vulnerable to other appliances operating on the same frequency, whereas 802.11a is not. Additionally, 802.11b has a better signal range and is not easily obstructed, while 802.11a has a shorter range and is easily obstructed. Furthermore, 802.11b is less expensive than 802.11a, and 802.11b operates at 2.4Ghz while 802.11a operates at 5Ghz.

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  • 13. 

    Which of the following translates host names to TCP/IP addresses?

    • A.

      DPNS

    • B.

      DNS

    • C.

      DHCP

    • D.

      DNLS

    Correct Answer
    B. DNS
    Explanation
    DNS (Domain Name System) translates host names to TCP/IP addresses. It is a system that converts human-readable domain names (such as www.example.com) into IP addresses (such as 192.0.2.1) that computers can understand. DNS plays a crucial role in the functioning of the internet, allowing users to access websites and other online services by simply typing in a domain name. It acts as a directory that matches domain names to their corresponding IP addresses, enabling communication between devices on the internet.

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  • 14. 

    Twisted Pair cable uses what kind of connector?

    • A.

      RJ-11

    • B.

      RJ-45

    • C.

      BNC

    • D.

      ST

    Correct Answer
    B. RJ-45
    Explanation
    Twisted Pair cable uses RJ-45 connectors. RJ-45 connectors are commonly used for Ethernet connections and are designed specifically for twisted pair cables. They have eight pins and are used to connect computers, routers, switches, and other network devices. The RJ-45 connector provides a secure and reliable connection for transmitting data over twisted pair cables.

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  • 15. 

    A network printer has stopped printing and the technician had observed that the test page is printing properly at the printer. He is also able to ping the printer IP address from his computer over the network. Which of the following is the most likely problem? 

    • A.

      The printer’s IP address is not correct

    • B.

      A job at the top of the print queue that is showing error

    • C.

      The printers driver needs to be updated

    • D.

      Paper is out

    Correct Answer
    B. A job at the top of the print queue that is showing error
    Explanation
    The most likely problem is that there is a job at the top of the print queue that is showing an error. This is indicated by the fact that the test page is printing properly at the printer and the technician is able to ping the printer IP address from his computer. If the printer's IP address was not correct, the technician would not be able to ping it successfully. If the printer's driver needed to be updated or if the paper was out, it would not affect the printing of the test page.

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