The bits and bytes of computer networking week 1 quiz answers

TCP/IP

1. Which of the following is an example of a network layer (layer 3) protocol in the five-layer TCP/IP model?

  • IP
  • TCP
  • UDP
  • Ethernet

 

2. Which of these is an example of something that works on the application layer (layer 5 of the five-layer TCP/IP model)?

  • UDP
  • An ethernet cable
  • A router
  • A browser

 

3. Which layer of the five layer TCP/IP model deals with cabling and connectors?

  • The physical layer
  • The application layer
  • The transport layer
  • The network layer

 

4. Which level of the TCP/IP five-layer model does a router operate on?

  • The transport layer
  • The network layer
  • The data link layer
  • The application layer

 

5. On which layer are Ethernet standards and some wireless technologies operating?

  • The network layer
  • The data link layer
  • The physical layer
  • The transport layer

6. Which of these allows connections from many devices and inspects the contents of ethernet protocol data?

  • A cable
  • A hub
  • A switch
  • A collision domain

7. What does LAN stand for?

  • Local area network
  • Locally available network
  • Large area network
  • Little area network

 

8. What's a router?

  • A physical layer device that prevents crosstalk
  • A device that knows how to forward data between independent networks.
  • A physical layer device that allows connections for many computers at once
  • A more advanced version of a switch

 

9. Which of these is a server?

  • A device operating on the data link layer that connects many devices together inspects ethernet protocol data
  • Something providing data to something requesting the data
  • A device that forwards data between multiple networks
  • Something receiving data from something providing data

 

10. What kind of wiring is in cables that communicate in voltage changes that are received by the receiving device as ones and zeros?

  • Gold
  • Fiber
  • Aluminum
  • Copper

 

11. What modulation type is used for computer networks?

  • Line coding
  • Line crimping
  • Simplex communication
  • RJ45

12. What is the difference between full duplex and half duplex?

  • Full duplex allows communications in two directions at the same time; half duplex means that only one side can communicate at a time.
  • Half duplex occurs when hubs are in use; full duplex occurs when switches are in use.
  • Full duplex is slower than half duplex.
  • Full duplex is a form of simplex communications.

13. The ____________ consists of devices and means of transmitting bits across computer networks.

  • modulation
  • physical layer
  • network layer
  • data link layer

14. What is the most common type of cabling used for connecting computing devices?

  • VGA Cable
  • SATA Cable
  • Power Cable
  • Twisted Pair Cable

15. Which of the following are category types of Twisted Pair Ethernet cable? (Select all that apply)

  • Foiled Twisted Pair (FTP).
  • USB cable
  • Unshielded Twisted Pair (UTP).
  • Shielded Twisted Pair (STP).

16. How many octets are there in a MAC address?

  • 4
  • 5
  • 8
  • 6

 

17. What address is used for Ethernet broadcasts?

  • FF:FF:FF:FF:FF:FF
  • FF:FF:FF:FF:FF:00
  • 00:00:00:00:00:00
  • 11:11:11:11:11:11

 

18. What is a cyclical redundancy check?

  • A way for two computers to synchronize their clocks.
  • A technique that allows for multiple logical LANs to operate on the same equipment.
  • A mathematical calculation used to ensure that all data arrived intact.
  • The actual data being transported by an Ethernet frame.

 

19. Which of the following are ways for transmitting data at the Ethernet level? (Select all that apply)

  • Unicast
  • Duplex
  • Broadcast
  • Multicast

 

20. Which of the following are parts of an Ethernet frame? (Select all that apply)

  • Data payload
  • EtherType field
  • Broadcast
  • Preamble

 

Graded Assessments - Networking Basics

21. Which protocol provides mechanisms ensuring data is reliably delivered?

  • Dynamic Host Configuration Protocol (DHCP)
  • Transmission Control Protocol (TCP)
  • User Datagram Protocol (UDP)
  • Internet Protocol (IP)

 

22. Select the right order of the TCP/IP Five-layer network model.

  • Physical Layer > Data Link Layer > Network Layer > Transport Layer > Application Layer.
  • Physical Layer > Application Layer > Data link Layer > Network Layer > Transport Layer
  • Physical Layer > Network Layer > Data link Layer > Transport Layer > Application Layer
  • Physical Layer > Data link Layer > Transport Layer > Network Layer > Application Layer

 

23. Which layer in the Transmission Control Protocol/Internet Protocol (TCP/IP) model does IP use?

  • Network
  • Physical
  • Transport
  • Data link

24. What type of cable communicates binary data by changing the voltage between two ranges?

  • Copper
  • Fiber
  • Silver
  • Gold

 

25. What is a network with only a single device at each end of the link called?

  • A point to point connection
  • A twisted pair network
  • A switching hub
  • A collision domain

26. Which device forwards data and operates at layer three of the Transmission Control Protocol/Internet Protocol (TCP/IP) model?

  • Client
  • Switch
  • Router
  • Hub

27. Which of the following is something that requests data from a server?

  • Hub
  • Router
  • Client
  • Switch

 

28. Which type of communication does a telephone use?

  • Full duplex
  • Twisted
  • Half Duplex
  • Simplex

 

29. Fill in the blank: There will almost always be some troubleshooting data available through_____.

  • Stop LEDs
  • Wire lights
  • Port lights
  • Action LEDs

30. Fill in the blank: The most common data link layer protocol for wired connections is _____.

  • UDP
  • BGP
  • TCP
  • Ethernet

 

31. What does the letter B represent in a Media Access Control (MAC) address?

  • 9
  • 10
  • 15
  • 11

 

32. Where in an ethernet frame will you find a Virtual Local Area Network (VLAN) header?

  • Before the EtherType field
  • Frame Check Sequence
  • Preamble
  • Payload

 

33. Which of the following is the first layer of the TCP/IP Five-layer network model.

  • Physical
  • Data link
  • Transport
  • Network

34. When an electrical pulse on one wire is accidentally detected on another nearby wire, this is known as what?

  • Cross Talk
  • Multicast
  • Duplex
  • Preamble

35. 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?

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

36. What device provides emails to devices like laptops and desktop computers?

  • Server
  • Switch
  • Router
  • Hub

37. Fill in the blank: When data flows across a cable in both directions, this is known as_____ communication.

  • Cross talk
  • Duplex
  • Simplex
  • Ethernet

38. Which of these devices contains many network ports, but does no other work than being a container for cable endpoints?

  • Hub
  • Patch Panel
  • Router
  • Switch

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

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

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

41. What immediately follows the Start Frame Delimiter in an ethernet frame?

  • Destination Media Access Control (MAC) address
  • Payload
  • Frame Check Sequence
  • EtherType field

42. True or false: Fiber cables use pulses of light to represent the ones and zeros of data.

  • True
  • False

43. True or false: Most devices are purely a server or a client.

  • True
  • False

44. 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, but information can still go in either direction. What is the connection operating at?

  • Simplex
  • Half Duplex
  • Partial
  • Full Duplex

45. What is the most common plug used with twisted pair network cables?

  • Registered Jack 35
  • Registered Jack 45
  • Registered Jack 11
  • Registered Jack 46

46. Which layer abstracts away the need for any other layers to care about what hardware is in use?

  • Transport
  • Data Link
  • Physical
  • Network

47. Fill in the blank: MAC address stands for ____ address

  • Media Access Control
  • Maximum Allowable Cost
  • Message Authentication Check
  • Memory Access Controller

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

  • Data link
  • Application
  • Transport
  • Network

49. Which protocol do routers use to determine the optimal path to forward traffic?

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

50. True or false: The TCP provides mechanisms to ensure that data is reliably delivered.

  • True
  • False

51. Which layer of the network model includes specifications for cables and connectors and how signals are sent over these connections?

  • Data link
  • Network
  • Physical
  • Transport

52. You have installed a device at the physical layer. All of the systems you connect to this device will talk to each other at the same time. What have you installed?

  • Client
  • Hub
  • Server
  • Router

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

  • Payload
  • Frame Check Sequence
  • Preamble
  • EtherType

54. Which of the following is a device that knows how to forward traffic between independent networks?

  • Client
  • Router
  • Hub
  • Switch

55. Which of the following is the fifth layer of the TCP/IP Five-layer network model.

  • Data Link
  • Transport
  • Application
  • Physical

Devendra Kumar

Project Management Apprentice at Google

This Post Has One Comment

  1. Kirk Reply

    Thanks so much for this, helped with reviewing for these course works

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