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Compsci 108 Networking > Lesson 10 > Flashcards

Lesson 10 Flashcards

1
Q

How do signals travel between a GPS satellite and an on-the-ground GPS receiver?

  • Only from the satellite to the receiver
  • From the satellite to the receiver and back, but through a ground station
  • From the satellite to the receiver and back
  • From the satellite to a ground station and then from the ground station to the receiver
  • Only from the receiver to the satellite
A

Only from the satellite to the receiver

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2
Q

A device that you can use to make and receive calls using a wireless connection and also contain some of the functionality of a computer is called a _____.

  • Tablet
  • Cellular phone
  • Smartphone
  • Handheld computer
  • Mobile phone
A

Smartphone

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3
Q

**What is(are) the principal difference(s) between a smartphone and a tablet?

a) screen size

b) ability to make and receive video calls

c) use of touchscreen technology

d) processing speed**

  • a and b
  • a only
  • b and c
  • c only
  • a, b, c and d
A

screen size

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4
Q

Which of the following is NOT a difference between regular mobile phones and satellite phones?

  • Number of service providers
  • Cost of hardware and service
  • Two-way wireless communication
  • The geographic area where you can pick up a signal
  • Type and size of the antenna
A

Two-way wireless communication

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5
Q

In the context of wireless computing devices, the term PDA stands for _____ _____ _____ ?

  • Progressive Digital Analog
  • Personal Digital Assistant
  • Personal Database Assistant
  • Personal Digital Aid
  • Progressive Device Analog
A

Personal Digital Assistant

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6
Q

Which of the following wireless communication technologies does not travel through walls and needs line-of-sight to communicate?

  • Infrared
  • Bluetooth
  • Zigbee
  • Ultra-wide band
A

Infrared

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7
Q

What is the approximate distance between devices when establishing a connection using short-range wireless communication?

  • 3 to 5 meters
  • From a few centimeters to
  • approximately 1 kilometer
  • 1 to 100 meters
  • From a few centimeters to several meters
A

From a few centimeters to several meters

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8
Q

Which of the following wireless communication technologies has the shortest range?

  • WiFi
  • Zigbee
  • Bluetooth
  • Near Field Communication
A

Near Field Communication

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9
Q

Which of the following is not a typical application of Bluetooth wireless communication?

  • Connecting several devices to the wireless Internet.
  • Wireless headset for a mobile phone
  • Wireless connection between a computer and peripheral devices (e.g mouse, keyboard, camera, printer)
  • Hands-free calling by connecting a mobile phone to a car’s stereo system
A

Connecting several devices to the wireless Internet.

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10
Q

Relative to other technologies such as Bluetooth, WiFi and cellular, Zigbee provides wireless communication that provides _____.

  • Lower cost and longer battery life
  • Longer range and lower cost
  • Lower cost
  • Longer battery life
A

Lower cost and longer battery life

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11
Q

A single Wi-Fi Access Point can cover a geographic area as large as a(n) _____.

College campus

House

Apartment building

Metropolitan area

A

House

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12
Q

A hardware device that has a built-in network adapter, antenna and radio for Wi-Fi is a(n) _____.

Access Point

Wi-Fi zone

Wireless card

Hotspot

A

Access Point

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13
Q

Which of the following is NOT a standard Wi-Fi communications standard?

802.11n

802.11g

802.11ac

802.11x

A

802.11x

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14
Q

Which of the following best describes the connection tool for a new smartphone that can connect to Wi-Fi?

Hotspot

Wireless card

Integrated Wi-Fi

Access Point

A

Integrated Wi-Fi

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15
Q

What type of coverage does Wi-Fi provide?

Medium range wired communication

Small range wired communication

Medium range wireless communication

Broadband wired communication

A

Medium range wireless communication

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16
Q

Which of the following technologies use microwaves?

Infrared

Cellular

FM Radio

None of these use microwaves

A

Cellular

17
Q

Which of the following wireless technologies would fit under the WAN category?

WiMAX

Cellular

Bluetooth

Home router

A

Cellular

18
Q

How do signals travel between a GPS satellite and an on-the-ground GPS receiver?
Only from the satellite to the receiver
From the satellite to the receiver and back

From the satellite to a ground station and then from the ground station to the receiver
From the satellite to the receiver and back, but through a ground station

A

Only from the satellite to the receiver

19
Q

Select the most appropriate option: Wireless communication uses _____ to transmit a signal.

Microwave

Electromagnetic waves

Fiber

Wi-Max

A

Electromagnetic waves

20
Q

Which of the following is a feature of 5G?

Multiple device support

Dead zones

Satellite uplink

Latency

A

Multiple device support

21
Q

Which of the following are valid configurations of a Wireless Access Point?

IP address, NAT

MAC address, NAT, Firewall

Firewall alone

IP address, NAT and Firewall

A

IP address, NAT and Firewall

22
Q

I. An Ethernet card is necessary for a wireless connectivity through a Wireless Access Point.

II. The devices that are connected using a Wireless Access Point communicate using radio signals or Infrared waves.

Which of the following is true with respect to above statements?

Both I and II are false.

Both I and II are true.

Only I is true.

Only II is true.

A

Only II is true.

23
Q

Although security is important, why is there a need to use Wireless Access Point as a pass-through set-up which allows any server to get connected to the network?

To enable the peer devices to exchange data without much difficulty.

To avoid unknown users getting connected to the network.

To enhance fast server access.

To block firewall.

A

To enable the peer devices to exchange data without much difficulty.

24
Q

Which of the following is/are true?

Wireless Access Points connect devices that have WI-FI or Bluetooth connectivity.

Wireless Access points connect two different wired networks.

Wireless Access Points cannot be standalone.

Wireless Access Points are often referred to as WI-MAX.

A

Wireless Access Points connect devices that have WI-FI or Bluetooth connectivity.

25
Q

The wireless access points have a _____ that help share connections

bridge

switch

hub

cable

A

switch

26
Q

The protocol with the highest bandwidth capability is _____:

802.11b

802.11ac

802.11a

802.11n

A

802.11ac

27
Q

The 802.11n Protocol makes use of _____ technology:

Multiple Input/Multiple Output (MIMO)

Dual-band wireless

Carrier Sense Multiple Access with Collision avoidance (CSMA/CA)

Orthogonal Frequency-Division Multiplexing (OFDM)

A

Multiple Input/Multiple Output (MIMO)

28
Q

Which two protocols are NOT backward compatible?

802.11g and 802.11b

802.11g and 802.11ac

802.11a and 802.11ac

802.11a and 802.11b

A

802.11a and 802.11b,

29
Q

What are WLAN Protocols?

WLAN Protocols are 802.11n/g protocols which control the obstruction and interference over a Wide Area Network (WAN).

WLAN Protocols are network protocols which govern data transmissions over wireless connectivity.

WLAN Protocols are 802.11 protocols which control the speed and frequency coverage over a Wide Area Network (WAN).

WLAN Protocols are network protocols which govern data transmissions over wide area connectivity.

A

WLAN Protocols are network protocols which govern data transmissions over wireless connectivity.

30
Q

The two main operational differences between the 802.11a protocol and the 802.11b protocol are:

802.11a protocol operates at 54Mbps within a 5GHz frequency range while 802.11b operates at 11Mbps within a 2.4GHz frequency range

802.11a protocol uses CSMA/CA at 11Mbps while 802.11b protocol uses (OFDM) at 11Mbps

802.11b protocol operates at 54Mbps within a 5GHz frequency range while 802.11a operates at 11Mbps within a 2.4GHz frequency range

802.11a protocol uses CSMA/CA at 1300Mbps while 802.11b protocol uses (OFDM) at 300Mbps

A

802.11a protocol operates at 54Mbps within a 5GHz frequency range while 802.11b operates at 11Mbps within a 2.4GHz frequency range

31
Q
A

Compsci 108 Networking (19 decks)

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