Computer Networking Final Exam - Fall 2024
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Questions and Answers

Which scheduling method allows each packet to be treated equally without prioritization?

  • Round Robin
  • Priority Queues
  • Weighted Fair Queuing
  • FIFO (correct)
  • What is the primary purpose of Network Address Translation (NAT)?

  • To increase the speed of the network
  • To enable IPv6 transitions
  • To disguise internal IP addresses (correct)
  • To allocate more IP addresses efficiently
  • Which algorithm is associated with the concept of 'count to infinity'?

  • Dijkstra’s Algorithm
  • Bellman-Ford Algorithm (correct)
  • Link-State Algorithm
  • OSPF Algorithm
  • What aspect distinguishes iBGP from eBGP?

    <p>iBGP runs within the same Autonomous System</p> Signup and view all the answers

    Which component of an IPv4 header indicates the length of the header itself?

    <p>Header Length</p> Signup and view all the answers

    What are the main functions of the Data Plane in computer networking?

    <p>Forwarding data packets to their destination</p> Signup and view all the answers

    Which of the following describes a key difference between circuit-switched and packet-switched networks?

    <p>Packet-switched networks divide data into packets that are routed independently.</p> Signup and view all the answers

    What is the primary purpose of TCP's delayed acknowledgments?

    <p>To optimize round-trip time by reducing the number of packets sent</p> Signup and view all the answers

    Which of the following is a common request method in HTTP?

    <p>GET</p> Signup and view all the answers

    What differentiates Selective Repeat from Go-Back-N in TCP?

    <p>Selective Repeat allows for selective acknowledgment of specific packets.</p> Signup and view all the answers

    Which layer in the Internet Protocol Stack is responsible for logical addressing?

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

    What is a characteristic of UDP compared to TCP?

    <p>UDP has a smaller header size compared to TCP.</p> Signup and view all the answers

    In the context of DNS, what is a recursive query?

    <p>A query that requires multiple steps to resolve the address</p> Signup and view all the answers

    Study Notes

    Computer Networking Final Exam - Fall 2024

    • Exam Date & Time: Friday, December 6th, 7:00 PM – 9:00 PM
    • Exam Format: Closed book/notes, no computer; similar to midterm format, with extra paper available.
    • Exam Duration: 120 minutes
    • Exam Scope: All lectures and textbook material

    Exam Topics

    • Internet Protocol Stacks:
      • Functions and naming of each layer
      • Services offered by each layer (Ethernet, IP, TCP, UDP)
      • Circuit-switched vs. packet-switched networks; advantages and disadvantages
      • Multiplexing methods (Frequency/Time Division Multiplexing)
    • Timing, Loss, and Speed:
      • Sources of delay in the network (bandwidth, throughput, latency, round trip times)
      • Sources of network loss
    • Application Layer:
      • HTTP protocol (request/response formats)
      • DNS (structure, resource record types, security implications, recursive/non-recursive queries, authoritative servers)
    • Transport Layer:
      • Principles of reliable data transfer (pipelined vs. alternating bit, Selective Repeat vs. GoBackN)
      • UDP protocol
      • TCP protocol (header fields, reliable data transfer, acknowledgement procedures, connection establishment/teardown, flow control, congestion control, delayed ACKs, timeout mechanisms)
    • Network Layer:
      • Data Plane vs. Control Plane (functions of components, forwarding/routing, destination/generalized forwarding, router parts)
      • Packet scheduling (Round Robin, FIFO, Priority Queues)
      • Switching technologies
      • IP addresses and subnetting (longest prefix matching, subnet notation, determining if an IP is in a subnet)
      • Network Address Translation (NAT)
      • IPv4 datagram and header
      • DHCP
      • Fragmentation
      • IPv6 datagram and header
      • Routing algorithms (centralized/distributed, link-state/distance vector, Dijkstra's algorithm, Bellman-Ford algorithm, count to infinity and poisoned reverse)
      • OSPF
      • BGP
    • Link Layer:
      • Link layer services
      • Multiple access links
      • Ethernet protocol (header, address resolution protocol, switches)
      • Wireshark (reading displays for transport/network layer status)

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    Description

    Prepare for the Computer Networking final exam covering all lectures and textbook material. Test your understanding of Internet Protocol stacks, timing, loss, and speed, as well as application and transport layer protocols. Ensure you're ready for a closed book exam format with various networking concepts.

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