NTC 247 Week 5 Individual: Cumulative Quiz

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 NTC 247 Week 5 Individual: Cumulative Quiz
 

Complete the Cumulative quiz.

Submit your quiz using the Assignment Files tab above.

 

Cumulative Quiz

 

 

 

 

 

How long is a RIFS?
 

 

2 microseconds
 

 

10 microseconds
 

 

16 microseconds
 

 

9 microseconds
 

 

 

 

 

 

What guard interval is used with 64-QAM by 802.11n HT devices to reach 600 Mbps data rates?
 

 

800 ns
 

 

200 ns
 

 

100 ns
 

 

400 ns
 

 

 

 

 

 

When two RF signals on the same frequency arrive at a receiver at the exact same time and their peaks and valleys are in alignment, what is true about these signals? (choose all that apply)
 

 

They are 180 degrees out of phase
 

 

They are 90 degrees out of phase
 

 

They have 0 degrees of separation
 

 

They are in phase
 

 

 

 

 

 

What is the cause of Free Space Path Loss?
 

 

Beam Reflection
 

 

Beam Absorption
 

 

Beam Diffraction
 

 

Beam Divergence
 

 

 

 

 

 

Which of the following are units of power?
 

 

dBi
 

 

Watt
 

 

Milliwatt
 

 

dBd
 

 

dBm
 

 

 

 

 

 

A single milliwatt = 0 decibels of change.
 

 

True
 

 

False
 

 

 

 

 

 

Which of the following increase amplitude?
 

 

Lightning arrestors
 

 

RF Cables
 

 

Pig tail adaptors
 

 

Antennae
 

 

Amplifiers
 

 

 

 

 

 

More than 40% blockage in the Fresnel Zone will not impede an RF link.
 

 

True
 

 

False
 

 

 

 

 

 

Which of the following describes a behavior of waves?
 

 

Frequency
 

 

Phase
 

 

Modulation
 

 

Amplitude
 

 

 

 

 

 

Phase is a standard measurement of RF wave size.
 

 

True
 

 

False
 

 

 

 

 

 

In an ERP 802.11 network, there are two mandated spread spectrum technologies.
 

 

True
 

 

False
 

 

 

 

 

 

ERP-OFDM stations can not connect with OFDM AP’s because the use different __________.
 

 

Contention methods
 

 

Modulation techniques
 

 

Frequencies
 

 

Coordination functions
 

 

 

 

 

 

Which data rates are supported by PBCC?
 

 

6, 12, and 24 Mbps
 

 

36, 48 and 54 Mbps
 

 

1, 2, 5.5 and 11 Mbps
 

 

22 and 33 Mbps
 

 

1, 2, 5.5, 11, 22, and 33 Mbps
 

 

 

 

 

 

How many adjacent non-overlapping channels may be used in the same physical area using the 2.4 GHz spectrum?
 

 

14
 

 

11
 

 

6
 

 

3
 

 

 

 

 

 

The area of coverage provided by an AP is called which of the following?
 

 

BSS
 

 

ESS
 

 

BSA
 

 

WLAN
 

 

 

 

 

 

The function of an AP is most closely related to which wired networking device?
 

 

A Switch
 

 

A Hub
 

 

A router
 

 

A firewall
 

 

 

 

 

 

What is the largest channel size possible with 802.11ac?
 

 

40 MHz
 

 

80 MHz
 

 

120 MHz
 

 

160 MHz
 

 

 

 

 

 

What is required for stations to use 256-QAM?
 

 

they must have a firmware upgrade
 

 

there can be no more then 2 stations
 

 

they must be very close to the AP
 

 

they must be far from the AP
 

 

 

 

 

 

The period of time that exist between wireless frames is called __________.
 

 

Duration/ID field
 

 

NAV Value
 

 

Interframe Space
 

 

Carrier Sense
 

 

 

 

 

 

What are the two ways carrier sense is performed? (Choose two)
 

 

Virtual Carrier Sense
 

 

Physical Carrier Sense
 

 

Logical Carrier Sense
 

 

DCF Carrier Sense
 

 

HCF Carrier Sense
 

 

 

 

 

 

What are the two frames used in active scanning? (Choose two)
 

 

Beacon Management Frame
 

 

Probe Response Frame
 

 

Clear to Send Frame
 

 

Ready to Send Frame
 

 

Probe Request Frame
 

 

 

 

 

 

Which of the following devices are said to be parts of a Specialty WLAN Infrastructure (Choose all that apply)
 

 

Autonomous AP’s
 

 

Lightweight AP’s
 

 

Wireless Workgroup Bridges
 

 

PTMP Bridges
 

 

WLAN Controllers
 

 

 

 

 

 

Many Law Enforcement agencies use frequency managers.
 

 

True
 

 

False
 

 

 

 

 

 

When designing wireless networks, two concepts often conflict. What are they? (Choose two)
 

 

Capacity
 

 

Channel
 

 

Antenna type
 

 

Transmit Power
 

 

Coverage
 

 

 

 

 

 

The standard as amended defines which PoE device types?
 

 

Legacy
 

 

PSE
 

 

PD
 

 

Proprietary
 

 

 

 

 

 

Which if the following is responsible for enrolling client devices?
 

 

Mobile Device
 

 

AP/WLAN Controller
 

 

MDM Server
 

 

Push notification server
 

 

 

 

 

 

What are the three main components of the 802.1X/EAP Framework?
 

 

Authentication, Authorization, Accounting
 

 

Authentication Server, Authentication Client, Authentication Accountant
 

 

Authenticator, Supplicant, Authentication Server
 

 

Authentication Guest, Authentication member, Authentication Server
 

 

 

 

 

 

A spectrum analyzer can be used to locate the source of which type of intentional attack?
 

 

RF Jamming
 

 

Overlapping adjacent channel interference
 

 

Bit Flipping
 

 

Duration field spoofing
 

 

 

 

 

 

What is a primary concern when planning WLAN deployments within the government vertical market?
 

 

Cost
 

 

Channel Use
 

 

Security
 

 

Capacity
 

 

 

 

 

 

A facilities escort may be required when conducting a site survey.
 

 

True
 

 

False
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