Network+ Practice Test 1

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Network Plus Quizzes & Trivia

Practice test for the CompTIA Network+ 2009 version.


Questions and Answers
  • 1. 

    Which OSI layer is responsible for encryption?

    • A.

      Application

    • B.

      Network

    • C.

      Presentation

    • D.

      Session

    Correct Answer
    C. Presentation
    Explanation
    The Presentation layer is responsible for encryption in the OSI model. This layer is responsible for formatting, encrypting, and compressing data before it is transmitted. It ensures that the data is in a format that can be understood by the receiving device and handles encryption and decryption processes to ensure secure communication between the sender and receiver.

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  • 2. 

    Which is an example of a physical address?

    • A.

      192.168.0.12

    • B.

      Ff08::123

    • C.

      AC:D1:F2:12:A3:C2

    • D.

      Www.comptia.org

    • E.
    Correct Answer
    C. AC:D1:F2:12:A3:C2
    Explanation
    AC:D1:F2:12:A3:C2 is an example of a physical address because it is a MAC (Media Access Control) address, which is a unique identifier assigned to a network interface controller (NIC) by the manufacturer. MAC addresses are used at the data link layer of the OSI model to uniquely identify devices on a network. This address is in the form of six pairs of hexadecimal digits separated by colons.

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  • 3. 

    Which type of connector is commonly used with fiber?

    • A.

      RJ-45

    • B.

      BNC

    • C.

      ST

    • D.

      RJ-11

    • E.

      AUI

    Correct Answer
    C. ST
    Explanation
    ST connectors, also known as Straight Tip connectors, are commonly used with fiber optic cables. They are cylindrical in shape and have a push-pull mechanism for easy insertion and removal. ST connectors are widely used in both single-mode and multi-mode fiber optic networks due to their reliability and ease of use. They provide a secure and stable connection, making them suitable for various applications such as telecommunications, data centers, and local area networks (LANs).

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  • 4. 

    A class A network has how many bits in the network portion of the address?

    • A.

      8

    • B.

      16

    • C.

      32

    • D.

      64

    Correct Answer
    A. 8
    Explanation
    A class A network has 8 bits in the network portion of the address. In classful networking, the first octet of a class A network address is reserved for the network ID, leaving the remaining three octets for host addresses. Since an octet consists of 8 bits, the network portion of a class A address is represented by 8 bits.

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  • 5. 

    Which is the correct loopback address for IPv6?

    • A.

      127.0.0.1

    • B.

      ::1

    • C.

      255::255

    • D.

      192.168.000.255

    Correct Answer
    B. ::1
    Explanation
    The correct loopback address for IPv6 is ::1. In IPv6, the loopback address is represented by "::1", which is equivalent to the IPv4 loopback address of "127.0.0.1". The "::1" address is used to test network connectivity on the local machine and is commonly referred to as "localhost".

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  • 6. 

    Which is an example of APIPA?

    • A.

      169.254.1.4

    • B.

      192.168.1.4

    • C.

      10.1.1.4

    • D.

      255.1.1.4

    Correct Answer
    A. 169.254.1.4
    Explanation
    APIPA stands for Automatic Private IP Addressing. It is a feature in the Windows operating system that allows a computer to automatically assign itself an IP address when it cannot obtain one from a DHCP server. The IP address range for APIPA is 169.254.0.0 to 169.254.255.255. Therefore, the correct example of APIPA in the given options is 169.254.1.4.

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  • 7. 

    Which protocol allows you to view email on an email server?

    • A.

      POP3

    • B.

      IMAP4

    • C.

      SMTP

    • D.

      SNMP

    Correct Answer
    B. IMAP4
    Explanation
    IMAP4 (Internet Message Access Protocol version 4) is a protocol that allows users to view and manage their email on an email server. Unlike POP3 (Post Office Protocol version 3), which simply downloads emails to a local device, IMAP4 allows users to access their emails from multiple devices and keeps them synchronized with the server. This means that any changes made to emails (e.g., deleting, moving, marking as read) are reflected across all devices, providing a more efficient and flexible email management solution. SMTP (Simple Mail Transfer Protocol) is used for sending emails, while SNMP (Simple Network Management Protocol) is used for network management.

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  • 8. 

    Which protocol resolves network host IP address to the MAC address?

    • A.

      FTP

    • B.

      SNMP

    • C.

      TCP

    • D.

      ARP

    Correct Answer
    D. ARP
    Explanation
    ARP (Address Resolution Protocol) is the correct answer. ARP is a protocol used to resolve network host IP addresses to their corresponding MAC addresses. It is responsible for mapping the IP addresses of devices on a network to their associated MAC addresses, allowing for communication between devices at the data link layer of the OSI model.

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  • 9. 

    Which two ports support FTP? (Select two!)

    • A.

      20

    • B.

      21

    • C.

      22

    • D.

      25

    Correct Answer(s)
    A. 20
    B. 21
    Explanation
    Ports 20 and 21 support FTP. Port 20 is used for data transfer, while port 21 is used for control and command communication. FTP (File Transfer Protocol) is a standard network protocol used to transfer files between a client and a server on a computer network.

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  • 10. 

    Which port number is associated with POP3?

    • A.

      53

    • B.

      70

    • C.

      110

    • D.

      443

    Correct Answer
    C. 110
    Explanation
    Port 110 is associated with POP3 (Post Office Protocol version 3). POP3 is a protocol used for receiving emails from a remote server to a local client. By default, POP3 uses port 110 for communication between the email client and the email server. This port allows the client to establish a connection with the server and retrieve emails from the server. Therefore, the correct answer is 110.

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  • 11. 

    Whcih service is used to resolve domain names to IP addresses?

    • A.

      DNS

    • B.

      WINS

    • C.

      DHCP

    • D.

      ARP

    Correct Answer
    A. DNS
    Explanation
    DNS (Domain Name System) is the correct answer for this question. DNS is a service that is used to resolve domain names to IP addresses. When a user enters a domain name in their web browser, the DNS server translates that domain name into the corresponding IP address of the server hosting the website. This allows the user's device to connect to the correct server and retrieve the requested web page.

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  • 12. 

    Which service is used to resolve network host names to IP addresses?

    • A.

      DNS

    • B.

      WINS

    • C.

      DHCP

    • D.

      IMAP

    Correct Answer
    B. WINS
    Explanation
    WINS (Windows Internet Name Service) is a service used to resolve network host names to IP addresses in a Windows environment. It is specifically designed for Windows networks and provides a centralized database for mapping NetBIOS names to IP addresses. WINS is commonly used in older Windows versions, while DNS (Domain Name System) is the more modern and widely used service for resolving host names to IP addresses on the internet. DHCP (Dynamic Host Configuration Protocol) is responsible for assigning IP addresses to devices on a network, and IMAP (Internet Message Access Protocol) is a protocol used for retrieving email from a mail server.

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  • 13. 

    What frequency does IEEE 802.11b operate?

    • A.

      2.4 GHz

    • B.

      5 GHz

    • C.

      2.4 MHz

    • D.

      5 MHz

    Correct Answer
    A. 2.4 GHz
    Explanation
    IEEE 802.11b operates at a frequency of 2.4 GHz. This frequency is part of the Industrial, Scientific, and Medical (ISM) band, which is unlicensed and widely used for various wireless communication technologies. The 2.4 GHz frequency allows for good coverage and penetration through walls, making it suitable for wireless networking applications.

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  • 14. 

    Which has a copper core conductor?

    • A.

      1000Base-CX

    • B.

      1000Base-SX

    • C.

      1000Base-LX

    • D.

      10GB-LR

    Correct Answer
    A. 1000Base-CX
    Explanation
    1000Base-CX has a copper core conductor. This is because CX stands for "Copper Cross-Connect," indicating that it uses copper cables for transmission. In contrast, 1000Base-SX and 1000Base-LX use fiber optic cables, while 10GB-LR is a 10 Gigabit Ethernet standard that also uses fiber optic cables.

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  • 15. 

    Which cable would you generally fide a F-type network connector.

    • A.

      STP

    • B.

      UTP

    • C.

      Fiber

    • D.

      Coax

    Correct Answer
    D. Coax
    Explanation
    Coaxial cable is the correct answer because it is commonly used with F-type network connectors. Coaxial cables have a central conductor surrounded by an insulating layer, a metallic shield, and an outer insulating layer. The F-type connector is designed specifically for coaxial cables and is commonly used for cable television, satellite television, and broadband internet connections.

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  • 16. 

    Which device is commonly used to connect fiber to UTP?

    • A.

      Hub

    • B.

      Switch

    • C.

      Router

    • D.

      Media Converter

    Correct Answer
    D. Media Converter
    Explanation
    A media converter is commonly used to connect fiber to UTP (Unshielded Twisted Pair) cables. Fiber optic cables are used for long-distance and high-speed data transmission, while UTP cables are more commonly used for shorter distances. A media converter acts as an interface between the two types of cables, converting the signals from fiber to UTP and vice versa. This allows for seamless communication between devices connected through different types of cables.

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  • 17. 

    Which OSI layer is responsible for establishing a connection between network devices?

    • A.

      Application

    • B.

      Transport

    • C.

      Session

    • D.

      Presentation

    Correct Answer
    C. Session
    Explanation
    The Session layer of the OSI model is responsible for establishing a connection between network devices. This layer manages the establishment, maintenance, and termination of the session between two devices. It sets up and coordinates the communication session, allowing devices to exchange data.

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  • 18. 

    Which protocol is used to upload email?

    • A.

      FTP

    • B.

      SMTP

    • C.

      POP3

    • D.

      IMAP4

    Correct Answer
    B. SMTP
    Explanation
    SMTP (Simple Mail Transfer Protocol) is the correct answer because it is the protocol used to upload email. SMTP is a communication protocol that allows the transfer of electronic mail messages between servers. It is responsible for sending outgoing mail from the sender's email client to the recipient's mail server. SMTP ensures that emails are properly addressed, formatted, and delivered to the correct destination.

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  • 19. 

    Which port number is associated with HTTP?

    • A.

      22

    • B.

      50

    • C.

      80

    • D.

      120

    Correct Answer
    C. 80
    Explanation
    Port number 80 is associated with HTTP. HTTP (Hypertext Transfer Protocol) is the protocol used for transmitting data over the internet. It is the foundation of data communication for the World Wide Web. Port 80 is specifically designated for HTTP traffic, allowing web browsers to communicate with web servers. When a user enters a URL in a web browser, the browser sends an HTTP request to the server on port 80, and the server responds with the requested web page.

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  • 20. 

    Which protocol is used by Microsoft operating systems for file sharing?

    • A.

      FTP

    • B.

      SMB

    • C.

      SAM

    • D.

      AFP

    Correct Answer
    B. SMB
    Explanation
    SMB (Server Message Block) is the correct answer. Microsoft operating systems, such as Windows, use SMB protocol for file sharing. SMB allows computers to share files, printers, and other resources on a network. It provides a way for users to access and manipulate files stored on remote servers. FTP (File Transfer Protocol) is a different protocol used for transferring files over the internet. SAM (Security Accounts Manager) is a component of Windows operating systems that manages user accounts and security policies. AFP (Apple Filing Protocol) is used by Apple operating systems for file sharing.

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