Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

IT Foundations > 12. Wireless networking > Flashcards

12. Wireless networking Flashcards

1
Q

Which address should you ping when you want to verify whether a NIC card is working properly

A

the loopback address (127.0.0.1)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Which network configuration needs to be checked when you are not able to resolve a Web site by its URL, but you can browse the Internet by using IP addresses?

A

Domain Name System (DNS) server configuration

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Which wireless mode requires that a wireless router is used

A

infrastructure mode

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Which wireless mode allows devices to connect without the need of a wireless router

A

ad hoc mode

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Which feature optimized network traffic on the network connection page

A

Quality of Service (QoS) Packet Scheduler

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What is the purpose of MAC filtering on a wireless network

A

to prevent unauthorized devices from connecting to the wireless network

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What is the purpose of Quality of Service (QoS)

A

It allows you to limit the bandwidth available for data based on the protocol used, the IP address, or other parameters

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What must be different in the network configuration for each client if TCP/IP is used as the standard protocol

A

the IP address

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Which component do you install in a computer to establish a phyiscal connection to the network media

A

Network Interface Card (NIC)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

What does the aconym DMZ denote

A

demilitarized zone

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

What is the maximum transmission speed supported by 802.11b standard

A

11Mbps

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

What is the maximum transmission speed supported by 802.11g standard

A

54Mbps

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

What is the maximum transmission speed promised by 802.11n standard

A

600Mbps

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

What is the max transmission speed supproted by 802.11a

A

54Mbps

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Which radio frequency band is used by microwaves and cordless telephones

A

2.4Ghz

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Which Wi-Fi networking standards operate in the 5GHz frequency

A
  • 802.11a
  • 802.11ac
  • 802.11n
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

Which three Wi-Fi networking standards operate within the 2.4 GHz radio frequency band

A
  1. 11b
  2. 11g
  3. 11n
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

At which band does Bluetooth technology operate

A

2.4GHz

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

ANT+

A

A 2.4 GHz radio protocol that operates at low speeds over distances up to 30 meters, and is used primarily to manage sensors such as fitness trackers, medical devices, and watches

20
Q

Bluetooth

A

A standard designed for wireless PAN applications that operates in the same 2.4 GHz RF band used by Wi-Fi, and is commonly used to connect peripherals to computers and mobile devices

21
Q

MIMO

A

Multiple-Input and Multiple-Output

22
Q

Multiple-Input and Multiple-Output

A

A wireless technologu that uses multiple antennas to simultaneously transmit and receive separate data streams on the same channel

23
Q

NFC

A

Near Feild Communication

24
Q

Near Field Communication (NFC)

A

A set of standards used either for small amounts of data or else for configuration data that can bootstrap a faster bluetooth or WiFi Connection

25
Q

RFID

A

Radio Frequency Identification

26
Q

Radio Frequency Identification (RFID)

A

A technology that allows identification and communication between nodes using electromagnetic fields

27
Q

Spread Spectrum

A

A wireless technology that breaks the transmission into a large number of subchannels on nearby frequencies

28
Q

SSID

A

Service Set Identifier

29
Q

Service Set Identifier (SSID)

A

A string of up to 32 octets that can be used to uniquely identify it to clients

30
Q

WPS

A

Wi-Fi Protected Setup

31
Q

Wi-Fi Protected Setup

A

A network security standard that allows non-technical users of home networks to easily control network access

32
Q
A
33
Q

MUMIMO

A

Multiple User MIMO

Multiple User Multiple Input Multiple Output

34
Q

WLC

A

Wireless Lan Controller

35
Q

Wireless Lan Controller (WLC)

A

a device that allows thin APs to be centrally managed , to share configuration data and function as a single layer network

36
Q

WMN

A

wireless mesh network

37
Q

wireless mesh network

A
  • allows nodes to communicate and relay communications as peers rather than dividually connecting to a WAP as clients
  • can also be used to join multiple compatible WAPs in a WiFi nework, giving the benefit of centrally managed APs, but with the extra benefit that not all APs need to have a connection to a wired internet
38
Q

Z-Wave

A
  • proprietary wireless standard maintained by Silicon Labs
  • uses 800-900MHz ISM band
  • 40knps over distances of 10-100m
  • allows nodes to form a mesh network such that even if two nodes can’t directly communicate, they can relay data through intermediate nodes
  • longer range than bluetooth with less power that WiFi.
  • Commonly used for interoperable monitoring and remote control of home automation and lighting
39
Q

ZigBee

A
  • open standard based on IEE 802.15.4 PAN standards maintained by ZigBee Alliance
  • uses a varierty of ISM bands, with 2.5Ghz and 915Mhz being the most common
  • similar features and applications to Z-Wave
  • Zigbee devices are available from more manufactures, but are also prone to compatibility issues
  • allows nodes to form a mesh network such that even if two nodes can’t directly communicate, they can relay data through intermediate nodes
  • longer range than bluetooth with less power that WiFi.
  • Commonly used for interoperable monitoring and remote control of home automation and lighting
40
Q

ISM band

A

Industrial, scientific and Medical Band

41
Q

WEP

A

Wired Equivalent Privacy

42
Q

Wired Equivalent Privacy (WEP)

A
  • part of the original Wi-Fi standard
  • Used RC4 encryption cipher
  • Used 40bit key (WEP 128 used an effective 104 bit key)
  • Flaws made it easy to compromise (in seconds)
  • Removed from WiFi standard in 2004
43
Q

WPA

A
  • Wi-Fi Protected Access
  • was in draft 802.11i standard, but rushed forward due to issues with WEP
  • encrypts using Temporal Key Integrity Protocol
  • 128bit
  • each data packet sent using its own key
44
Q

WPA2

A
  • final version of WPA
  • based on final 802.11i standard
  • mandatory support for 128bit encryption
  • uses Advance Encryption Standard (AES) cipher
45
Q

Wi-Fi strongest security(high to low)

A
  1. WPA2 with AES
  2. WPA with AES
  3. WPA2 TKIP
  4. WPA TKIP
  5. WEP
  6. Nothing
46
Q
A

IT Foundations (18 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions