Coursera | The Bits and Bytes of Computer Networking

Networking Basics

Networking Basics >> The Bits and Bytes of Computer Networking

1.  When data can flow across a cable in both directions, this is known as _____ communication.

  • ethernet
  • simplex
  • cross talk
  • duplex

2. The number system that has 16 numerals is known as _____.

  • binary
  • octal
  • hexadecimal
  • decimal

3. The most common data link layer protocol for wired connections is _____.

  • Ethernet
  • BGP
  • TCP
  • UDP

4. When an electrical pulse on one wire is accidentally detected on another nearby wire, this is known as _____.

  • duplex communication
  • preamble
  • cross talk
  • multicast

5. A defined set of standards that computers must follow in order to communicate properly is known as a _____.

  • switch
  • collision domain
  • modulation
  • protocol

6. What layer in the Transmission Control Protocol/Internet Protocol (TCP/IP) model is responsible for defining a way to interpret signals so network devices can communicate?

  • Network
  • Transport
  • Data link
  • Application

7. Which layer in the Transmission Control Protocol/Internet Protocol (TCP/IP) model is responsible for delivering data between two nodes?

  • Network
  • Application
  • Data link
  • Transport

8. The Ethernet protocol functions at which layer of the Transmission Control Protocol/Internet Protocol (TCP/IP) model?

  • Application
  • Transport
  • Physical
  • Data link

9. Multiple systems try to send data at the same time. The electrical pulses sent across the cable interfere with each other. What type of network segment is being used?

  • Subnet
  • Local Area Network (LAN)
  • Wide Area Network (WAN)
  • Collision domain

10. You open a web page and log into your email. The traffic travels over many routers. What protocol will the routers use to determine the most optimal path to forward the traffic?

  • Internet Protocol (IP)
  • Transmission Control Protocol (TCP)
  • User Datagram Protocol (UDP)
  • Border Gateway Protocol (BGP)

11. How many wires are in a standard Category 6 cable?

  • 6
  • 8
  • 4
  • 10

12. A Local Area Network (LAN) uses Category 6 cabling. An issue with a connection results in a network link degradation and only one device can communicate at a time. What is the connection operating at?

  • Full Duplex
  • Partial
  • Half Duplex
  • Simplex

13. What is used to determine when the communications channels are clear and when a device is free to transmit data?

  • Internet Protocol (IP)
  • Ethernet
  • Carrier Sense Multiple Access with Collision Detection (CSMA/CD)
  • Transmission Control Protocol (TCP)

14. You need to identify the manufacturer of a network interface. Where will you look for this information?

  • The last octet of a Media Access Control (MAC) address
  • The fourth octet of a Media Access Control (MAC) address
  • The first octet of a Media Access Control (MAC) address
  • The first three octets of a Media Access Control (MAC) address

15. What section in an ethernet frame will you find a Virtual Local Area Network (VLAN) header?

  • Preamble
  • EtherType field
  • Frame Check Sequence
  • Payload

16. Which section in an ethernet frame contains the data from higher layers, such as Internet Protocol (IP) and the transport and application layers?

  • EtherType
  • Frame Check Sequence
  • Preamble
  • Payload

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