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Flashcards in 802 Standards PE Deck (25)
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1
Q

Wifi and Ethernet abide by the IEEE standards 802.11 and 802.3 respectively.

A

True

2
Q

The International Telecommunications institute (ITU) is responsible for the coordination of global use of the Radio Frequency (RF) spectrum, each country must follow the rules of the ITU and cannot deviate.

A

False. Each Country usually makes it’s own government entity and set of laws.

3
Q

In the United States, the governing organization that regulates the use of the RF spectrum and broadband services is:

A

FCC

4
Q

The first 802.11 standard was developed in June of 2006.

A

False

5
Q

What band(s) does 802.11x operate on?

A

2.4GHz and 5GHz

6
Q

What layer(s) of the OSI model does 802.11 WiFi operate in?

A

Both Layer 1 & Layer 2

7
Q

The most recent amendment to the 802.11 standard has a maximum data rate of:

A

Over 1 Gbps

8
Q

_________ allows one single radio wave to represent __ bits of data by manipulating the amplitude and phase of the radio waves into 64 different discrete measurable states.

A

QAM 64

9
Q

A disadvantage of OFDM is that data becomes more susceptible to noise and interference since the receiver must accurately detect more discrete phases and amplitudes of a signal.

A

False

10
Q

The first 802.11 wireless standard, often referred to as 802.11 Prime, was initially published as:

A

802.11 - 1997

11
Q

What modulation type is used in technologies such as 802.11ac, 4G & 5G cellular technologies, WiMAX and satellite?

A

OFDM

12
Q

_______________ is the process of combining one or more cellular modems connections into a single faster virtual connection allowing the end use to utilize combined bandwidth.

A

Channel Bonding

13
Q

Multiple Input/ Multiple output (MIMO) utilizes what natural radio-wave phenomenon to bounce off walls, ceilings, and other objects to ultimately reach it’s desired destination?

A

Multi-Path

14
Q

__________ refers to an over-the-air interface between a wireless client and a base station or between two wireless clients.

A

802.11 WLAN

15
Q

________ enables a client to communicate with another client without the need for an access point.

A

Ad Hoc

16
Q

At what layer does meshing on a wireless network occur?

A

Layer 2

17
Q

Channel bonding is best optimized on which frequency band?

A

5GHz

18
Q

This multi-functional device includes an access point and routes packets from a wireless LAN to another network, wired or wireless WAN.

A

Wireless Gateway

19
Q

What are the two types of Wireless Gateways?

A

Residential and Enterprise

20
Q

A Wireless Distribution System (WDS):

A

Uses 802.11 connection to allow wireless inter-connection of access points

21
Q

Independent Basic Service Set (IBSS) is also known as ad-hoc mode or peer-to-peer mode, in which:

A

There is no single node required and contains wireless stations that communicate directly with each other without the need for an access point

22
Q

Basic Service Set (BSS) contains at least _______ access point connected to a wired network infrastructure and a set of wireless end stations.

A

One

23
Q

ESS stands for:

A

Extended Service Set

24
Q

Captive portals contain anti-virus and firewall programs to protect users.

A

True

25
Q

A captive portal can be configured with ______________ to impose limits on how much information can be downloaded at one time per user.

A

Bandwidth Throttling