The bits and bytes of computer networking week 5 quiz answers

POTS and Dial-up

1. Another term for POTS, or the Plain Old Telephone System, is _______________.

  • Public Available Telephone Network
  • Public Switched Telephone Exchange
  • Phone Switched Transport Network
  • Public Switched Telephone Network
  • Public Available Telephone Exchange

 

2. A baud rate is a measurement of the number of ______________________.

  • bits that can be sent across a telephone line every minute
  • bytes that can be sent across a telephone line every second
  • bits that can be sent across a telephone line every second
  • bytes that can be sent across a telephone line every minute

 

3. What system did Duke grads build that is still in use today?

  • DSL
  • USENET
  • POTS
  • PSTN

 

4. Which device is used to transfer data across a dial-up connection?

  • ATM
  • Modem
  • Ethernet cables
  • USENET

 

5. Modems take data that computers can understand and turn them into _____ that can be transmitted over POTS.

  • Audible wavelengths
  • Baud rates
  • Modulating electrical charges
  • PTSN

 

6. T1 is short for __________.

  • Transmission 1
  • Transportation 1
  • Transmission System 1
  • Transportation System 1

 

7. How fast is a T1 line?

  • 128 Mb/sec
  • 1.544 Mb/sec
  • 1 Mb/sec
  • 44.763 Mb/sec

 

8. Select all statements that are true of cable internet connections.

  • They’re shared bandwidth connections
  • They’re wireless connections
  • They’re dial-up connections
  • They’re broadband connections

 

9. What are the subprotocols for PPP (Point to Point Protocol)? Select all that apply.

  • FCS
  • LCP
  • NCP
  • Compression

 

10. What do you call the demarcation point for fiber technologies?

  • ONT
  • FTTN
  • FTTX
  • DSLAM

 

11. What does WAN stand for?

  • Wired Area Network
  • Wireless Area Network
  • Wireless Local Area Network
  • Wide Area Network

 

12. In a WAN, what is the area between a demarcation point and the ISP's core network known as?

  • a Local Area Network
  • A local link
  • a local loop
  • An access point

 

13. A point-to-point VPN is also known as a ______________.

  • one-to-many VPN
  • site-to-site VPN
  • port forwarding VPN
  • data link VPN

 

14. Who handles sending data from one site to another?

  • CTO
  • ISP
  • VPN
  • T-carrier line

 

15. How many address fields does an 802.11 header contain?

  • 2
  • 1
  • 3
  • 4

16. What are wireless channels?

  • a point-to-point wireless connection
  • an example of an ad-hoc network
  • Individual, smaller sections of the overall frequency band used by a wireless network
  • a collision domain

 

17. Which of the following frequencies do wireless networks typically operate on? Select all that apply.

  • 5Ghz
  • 1.544Ghz
  • 88Mhz
  • 2.4Ghz

 

18. WPA3 was built with the intention of replacing which protocol?

  • IEEE 802.11
  • WLAN
  • WPA2
  • WEP

 

19. An 802.11 frame contains a number of fields. Which field describes the version of 802.11 that is being used?

  • Duration
  • Address
  • Sequence control
  • Frame control

 

20. A modulator/demodulator is better known as a what?

  • modem
  • computer
  • radio
  • telephone

 

21. Which of the following attributes describe a broadband internet connection? (Choose all that apply)

  • Universally available
  • Not dial-up
  • Exclusively for business
  • Always on

22. A T1 line consists of how many telephone channels?

  • 28
  • 24
  • 100
  • 16

23. What is the more accurate name for a DSL modem?

  • CMTS
  • DSLAM
  • ONT
  • POTS

 

24. With which of the following models do many users share a certain amount of bandwidth until the transmissions reach the ISP's core network?

  • Wireless transmissions
  • Central Office (CO) connection
  • Dedicated bandwidth
  • Shared bandwidth

 

25. What does FTTP stand for?

  • Fiber to the People
  • Fiber to the Premises
  • File Transfer Telephone Protocol
  • Fiber Telephone Total Package

 

26. A section of the radio spectrum that’s been agreed upon to be used for certain communications is known as a what?

  • A channel
  • A frequency band
  • A wireless LAN
  • A collision domain

 

27. In which type of wireless configuration do nodes communicate directly with each other, rather than with an access point or any other supporting infrastrucuture?

  • Ad-hoc
  • Mesh network
  • 802.11b
  • 2.4Ghz

 

28. How many bits long is a WPA2 key?

  • 128
  • 64
  • 256
  • 512

 

29. Cellular networking is also known as ____ networking.

  • computer
  • mobile
  • wide area
  • organic

 

30. A ___ rate is the rate a dial-up connection can send data across a phone line.

  • voice
  • data
  • baud
  • transfer

31. What term is used to refer to any internet connectivity technology that isn't dial-up?

  • Fast Internet
  • Ethernet
  • Plain Old Telephone System (POTS)
  • Broadband

32. How many T1 lines make up one T3 line?

  • 24
  • 100
  • 28
  • 3

33. What is the first field in an 802.11 header?

  • Frame Control Field
  • Sequence Control Field
  • Duration Field
  • Preamble

34. What wireless security method allows you to configure access points to only allow connections from specific physical addresses belonging to devices you trust?

  • Media Access Control (MAC) filtering
  • WiFi Protected Access (WPA)
  • Wired Equivalent Privacy (WEP)
  • 5Ghz Channel

35. Like WiFi, cellular networks use what to transmit data?

  • Radio Waves
  • LAN Connections
  • Cables
  • Local Loops

36. Which of the following systems is a precursor to later dial-up networks?

  • Broadband
  • World Wide Web
  • USENET
  • Bulletin Board

37. What does SDSL stand for?

  • Simple Differential Subscriber Line
  • System Digital Subscriber Line
  • Subscriber Digital Service Line
  • Symmetric Digital Subscriber Line

38. What does ONT stand for?

  • Optical Network Tether
  • Optional Network Traffic
  • Optical Network Telephone
  • Optical Network Terminator

39. WLAN access points act as a ___ between wireless and wired networks?

  • Router
  • Bridge
  • Gateway
  • Switch

40. What type of cable is used in a T1 line?

  • Fiber Optic
  • Cable Broadband
  • Twisted Pair Copper
  • Coaxial

41. What type of cable is used for cable broadband?

  • TV
  • Coaxial
  • Copper
  • Fiber

42. Does FTTB stand for Fiber to the Basement?

  • Yes
  • No
  • Sometimes

43. Which 802.11 specification was widely adopted first?

  • 802.11a
  • 802.11b
  • 802.11g
  • 802.11ac

44. Which of the following is NOT a form of broadband?

  • Fiber
  • POTS
  • DSL
  • Cable Internet

45. Which type of network contains one or more access points that act as a bridge between wired and wireless networks?

  • WAN
  • WLAN
  • VLAN
  • LAN

46. Cellular network towers (or cells) are configured in such a way so that they avoid what type of problem?

  • Signal strength
  • Overlap
  • Speed
  • Distance

47. What is a benefit of a mesh network?

  • More access points can be deployed without additional cable
  • No internet connectivity
  • All clients act as an access point
  • No access points are needed

48. What security standard quickly replaced WEP in most places?

  • MAC filtering
  • WLAN
  • Ad-hoc
  • WiFi Protected Access (WPA)

49. What connects lots of different cable connections to an ISP's core network?

  • CMTS
  • DSLAM
  • POTS
  • ONT

50. What security standard quickly replaced WEP in most places?

  • MAC filtering
  • WLAN
  • WiFi Protected Access (WPA)
  • Ad-hoc

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