Network Concepts: Revision Questions
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Questions and Answers

What is the primary purpose of the Cyclic Redundancy Check (CRC) in data transmission?

  • Data integrity verification
  • Error detection (correct)
  • Data compression
  • Data encryption
  • Which statement accurately describes MAC addresses?

  • MAC addresses are assigned dynamically and change frequently.
  • MAC addresses consist of eight groups of four decimal digits.
  • MAC addresses use binary digits exclusively.
  • A MAC address typically has six groups of two hexadecimal characters. (correct)
  • In the OSI model, which layer do port numbers and sequence numbers belong to?

  • Transport Layer (correct)
  • Session Layer
  • Network Layer
  • Application Layer
  • What distinguishes the MAC broadcast address FF-FF-FF-FF-FF-FF?

    <p>It is used to send messages to all devices in the network.</p> Signup and view all the answers

    Which statement correctly describes the purpose of the ARP protocol?

    <p>It resolves an IP address to its corresponding MAC address.</p> Signup and view all the answers

    What does TCP windowing manage in data transmission?

    <p>The reliability of data delivery.</p> Signup and view all the answers

    What distinguishes loopback addresses in network configurations?

    <p>They are utilized for testing on a local machine.</p> Signup and view all the answers

    Which OSI layer do routers operate on?

    <p>Network Layer</p> Signup and view all the answers

    Study Notes

    Network Concepts: Revision Questions

    • (i) When transferring a 1KB file, more than 1KB of data is transferred due to headers, control information, and error-checking.

    • (ii) MAC addresses consist of hexadecimal letters (0-9 and A-F). MAC addresses are typically 48 bits (6 bytes) long.

    • (iii) Network switches use MAC addresses for forwarding decisions.

    • (iv) The File Transfer Protocol (FTP) is used for transferring files over a network.

    • (v) Cyclic Redundancy Check (CRC) is used for error detection in data transmission.

    • (vi) Secure Sockets Layer (SSL) adds security to Hypertext Transfer Protocol (HTTP).

    • (vii) When data passes through a router, the source and destination IP addresses change.

    • (viii) An IPv6 address is 128 bits long.

    • (ix) Loopback addresses (127.0.0.1 and ::1) are used for testing network connections.

    • (x) The MAC broadcast address (FF-FF-FF-FF-FF-FF) is used for sending a message to all devices on a network.

    • (xi) Port numbers and sequence numbers belong to the Transport layer of the OSI model.

    • (xii) Port numbers and sequence numbers belong to the Transport layer of the TCP/IP model..

    • (xiii) IPv4 addresses belong to the Network layer of the OSI model.

    • (xiv) IPv6 addresses belong to the Internet layer of the TCP/IP model.

    • (xv) TCP uses windowing to control the amount of data sent. This is important to handle network congestion and avoid overwhelming the receiver.

    • (xvi) Sending data to some devices only, is called Multicasting.

    • (xvii) Class A, B and C, along with ranges, are different classes of IPv4 addresses used for multicasting.

    • (xviii) Switches operate on the Data Link Layer (Layer 2) while Routers operate on the Network Layer (Layer 3).

    • (xix) CRC, FCS, and MD5 are used for error detection and validation of data integrity.

    • (xx) Address Resolution Protocol (ARP) translates IP addresses to MAC addresses.

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    Description

    This quiz covers fundamental network concepts including MAC addresses, protocols, and error detection methods. It serves as a revision tool for understanding data transfer, routing, and network addressing. Test your knowledge on essential networking terminology and functionality.

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