802 Standards PE

Question 1

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

Answer 1

True

Question 2

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.

Answer 2

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

Question 3

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

Answer 3

FCC

Question 4

The first 802.11 standard was developed in June of 2006.

Answer 4

False

Question 5

What band(s) does 802.11x operate on?

Answer 5

2.4GHz and 5GHz

Question 6

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

Answer 6

Both Layer 1 & Layer 2

Question 7

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

Answer 7

Over 1 Gbps

Question 8

_________ 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.

Answer 8

QAM 64

Question 9

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.

Answer 9

False

Question 10

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

Answer 10

802.11 - 1997

Question 11

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

Answer 11

OFDM

Question 12

_______________ 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.

Answer 12

Channel Bonding

Question 13

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?

Answer 13

Multi-Path

Question 14

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

Answer 14

802.11 WLAN

Question 15

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

Answer 15

Ad Hoc

Question 16

At what layer does meshing on a wireless network occur?

Answer 16

Layer 2

Question 17

Channel bonding is best optimized on which frequency band?

Answer 17

5GHz

Question 18

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

Answer 18

Wireless Gateway

Question 19

What are the two types of Wireless Gateways?

Answer 19

Residential and Enterprise

Question 20

A Wireless Distribution System (WDS):

Answer 20

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

Question 21

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

Answer 21

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

Question 22

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

Answer 22

One

Question 23

ESS stands for:

Answer 23

Extended Service Set

Question 24

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

Answer 24

True

Question 25

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

Answer 25

Bandwidth Throttling