Networking Fundamentals Quiz
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Questions and Answers

What is the primary function of a network?

  • To operate independently without any devices
  • To connect devices for information exchange (correct)
  • To restrict access to certain users
  • To allow only video sharing between devices

    • Which network type connects hosts within a limited geographical area, such as an office building?

  • Personal Area Network (PAN)
  • Wide Area Network (WAN)
  • Metropolitan Area Network (MAN)
  • Local Area Network (LAN) (correct)

    • What is the largest Wide Area Network (WAN) currently in operation?

  • Intranet
  • Metropolitan Area Network
  • The Internet (correct)
  • Local Area Network

    • What are the two basic building blocks of any network?

    <p>Nodes and Links</p> Signup and view all the answers

    Which of the following is NOT a form of link in network topologies?

    <p>Processor Management</p> Signup and view all the answers

    What type of topology involves direct connections between just two nodes?

    <p>Point-to-Point Topology</p> Signup and view all the answers

    Which type of network often covers distances of hundreds of kilometers?

    <p>Wide Area Network (WAN)</p> Signup and view all the answers

    What role do interconnection devices play in a network?

    <p>They enable communication between nodes</p> Signup and view all the answers

    Which of the following describes a Network Service Provider (NSP)?

    <p>A national backbone network that connects multiple ISPs.</p> Signup and view all the answers

    What is the primary function of the traceroute utility?

    <p>To display the route and timing of packets across networks.</p> Signup and view all the answers

    What type of topology can a network cloud represent?

    <p>Any basic network topology.</p> Signup and view all the answers

    Which device is NOT classified as an interconnection device?

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

    What is the relationship between ISPs and NSPs?

    <p>NSPs provide the backbone networks that ISPs use to connect to the Internet.</p> Signup and view all the answers

    Which term refers to a Local Area Network?

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

    What does a Point of Presence (POP) signify in network terminology?

    <p>A location for connecting local networks to the Internet.</p> Signup and view all the answers

    Which of the following would NOT likely be part of a typical campus network?

    <p>National backbone</p> Signup and view all the answers

    What is a major disadvantage of linear topology?

    <p>Failure of a link can disrupt communication</p> Signup and view all the answers

    How does bus topology manage bandwidth utilization?

    <p>Only one node can transmit at a time</p> Signup and view all the answers

    What mechanism does ring topology use to manage data transmission?

    <p>Token passing</p> Signup and view all the answers

    What distinguishes dual ring topology from single ring topology?

    <p>It offers better fault tolerance with two counter-rotating tokens</p> Signup and view all the answers

    Which topology was traditionally used in earlier Local Area Networks (LANs)?

    <p>Bus topology</p> Signup and view all the answers

    What devices are used in bus topology to prevent signal reflection?

    <p>Terminator devices</p> Signup and view all the answers

    In which topology does a collision occur if two nodes transmit simultaneously?

    <p>Bus topology</p> Signup and view all the answers

    How does linear topology handle data transfer between nodes?

    <p>Transfer through multiple nodes sequentially</p> Signup and view all the answers

    What is the main function of a hub in a star topology?

    <p>To connect multiple nodes and broadcast data to all of them.</p> Signup and view all the answers

    Which of the following is an advantage of star topology over bus topology?

    <p>Star topology has better fault tolerance.</p> Signup and view all the answers

    What type of mesh topology connects every node directly to every other node?

    <p>Full mesh</p> Signup and view all the answers

    In current local area networks, what device has typically replaced the hub?

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

    Which problem arises from increasing the number of nodes in a bus topology?

    <p>Increased chances of collisions affecting performance.</p> Signup and view all the answers

    What must be addressed when building larger networks to ensure interconnectivity?

    <p>How to increase capacity and connect different topologies.</p> Signup and view all the answers

    Which of the following is a characteristic of FDDI?

    <p>It is a type of network interface based on ring topology.</p> Signup and view all the answers

    What commonly affects signal quality in longer links of a network?

    <p>Signal corruption and voltage level drop.</p> Signup and view all the answers

    What is the primary command used for traceroute in Unix, Linux, and Mac OS?

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

    What command is equivalent to traceroute in Windows?

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

    Which component does traceroute manipulate in the packet to gather routing information?

    <p>Time To Live (TTL)</p> Signup and view all the answers

    What happens to a packet when its TTL value reaches 0?

    <p>The packet is discarded, and an ICMP Time Exceeded packet is sent back.</p> Signup and view all the answers

    What type of packet does traceroute primarily use to obtain network paths?

    <p>ICMP echo request packet</p> Signup and view all the answers

    What is the default TTL value when a packet begins its journey in traceroute?

    <p>64</p> Signup and view all the answers

    What kind of information can a traceroute command gather about each hop along the route?

    <p>Round trip times for packets</p> Signup and view all the answers

    Which of the following would NOT be an outcome of incorrectly configured TTL in packets?

    <p>Attachments to large data files</p> Signup and view all the answers

    What is the purpose of sending ICMP echo request packets with increasing TTL values in traceroute?

    <p>To collect information about each router along the path</p> Signup and view all the answers

    How does a router respond to a packet that has a TTL of 0?

    <p>It discards the packet and sends an ICMP time exceeded message back</p> Signup and view all the answers

    What total number of packets does the source send in traceroute to gather data about the path?

    <p>39 packets</p> Signup and view all the answers

    Which of the following is not a basic topology for networks mentioned in the key take-aways?

    <p>Cloud topology</p> Signup and view all the answers

    What is typically not true about the path taken by Internet packets?

    <p>It is generally the shortest path available</p> Signup and view all the answers

    What is the largest TTL value used by the source in the given traceroute example?

    <p>13</p> Signup and view all the answers

    Which of the following statements about traceroute is incorrect?

    <p>Traceroute relies on the path being static at all times</p> Signup and view all the answers

    What does traceroute rely on to measure the time taken for packets to travel to the destination?

    <p>The round-trip time for packets sent</p> Signup and view all the answers

    Study Notes

    Introduction to Networks

    • Networks are interconnected collections of autonomous devices (like computers, tablets, and sensors) that exchange data using communication protocols (like TCP/IP) over various media (wired and wireless) and across diverse platforms (like Windows, Mac, and Linux).

    Network Topologies

    • Networks are built using two basic components:
      • Nodes: These are the individual devices (e.g., computers, servers, mobile devices).
      • Links: These are the connections between the devices (e.g., cables, wireless signals).
    • Common network topologies include:
      • Point-to-Point: Two nodes connected by a single link.
      • Linear: Multiple nodes connected in a line.
      • Bus: All nodes share a single link. Problems arise with simultaneous transmissions.
      • Ring: Nodes are connected in a loop; one node can transmit data only if it has the token.
      • Dual Ring: Combines two counter-rotating rings for improved fault tolerance.
      • Star: Nodes are connected to a central hub or switch.
      • Mesh: Multiple links connect nodes in an arbitrary pattern, with each connection possibly between every node or a selection.

    Interconnection Devices

    • Devices that connect networks and expand their reach. Examples include:
      • Repeaters/Hubs: Extend the length of a network and boost signal strength. Hubs are multi-port repeaters.
      • Bridges/Switches: Extend network range and filter data to reduce unnecessary transmissions (improving performance). They can connect networks with different bandwidths.
      • Routers: Connect different networks, translating operations between topologies and allowing communication across networks with different bandwidths. They select optimal paths for data transmission.

    The Structure of the Internet

    • The Internet is a vast collection of interconnected networks.
    • Core components include:
      • Internet Service Providers (ISPs): Companies that provide internet access.
      • Network Service Providers (NSPs): Companies that maintain high-capacity backbone networks to interconnect large portions of the internet.
      • Campus Backbones: Connections within university or corporate campuses.
      • Office LANs: Local area networks within individual offices.

    Performance

    • Network performance is significantly affected by the number of nodes, the characteristics of the different topologies used, and bandwidth.

    Traceroute Utility

    • traceroute (or tracert): A command-line utility to display the route and measure transit time of packets across the Internet.
    • It works by sending packets with decreasing Time-To-Live (TTL) values.
    • Each router along a packet's path decrement TTL by one.
    • Source records the routers along the path and their response times.

    How does traceroute work?

    • Traceroute sends a request packet (using ICMP echo) to a destination.

    • Each router on the path decrements the Time-to-Live (TTL) in the packet header and forwards the packet.

    • If a router encounters a packet with TTL 0, it returns an "ICMP Time Exceeded" message.

    • Traceroute collects this information on the path.

    • The information is then used to deduce the route from the source (the computer) to the destination.

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    CSCI 3171 Network Computing Module 1 PDF

    Description

    Test your knowledge on basic networking concepts with this quiz. Covering topics such as network types, topologies, and essential devices, it's perfect for students looking to grasp networking fundamentals. Challenge yourself and see how well you understand the workings of networks!

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