NTC 247 Entire Course

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 NTC/247

WIRELESS NETWORKING CONCEPTS

 

The Latest Version A+ Study Guide

 

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NTC 247 Entire Course Link

https://uopcourses.com/category/ntc-247/

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NTC 247 Week 1 Individual: Week One Quiz
 

Complete the Week One quiz.

Submit your quiz using the Assignment Files tab above.

Week One Quiz

 

 

 

 

Common building materials, such as drywall and glass, will impede RF propagation to some degree.
 

 

True
 

 

False
 

 

 

 

 

 

__________ is the result of an RF signal striking an object, not passing through, nor being absorbed nor refracted or even diffracted.
 

 

Scattering
 

 

Free Space Path Loss
 

 

Reflection
 

 

Gain
 

 

 

 

 

 

The transmitter generates the AC signal to begin RF communications.
 

 

True
 

 

False
 

 

 

 

 

 

The __________ in a bridged network will be the source of the greatest loss in the transmission.
 

 

Multipath
 

 

Free Space Path Loss
 

 

Cable induced loss
 

 

Transmit strength (amplitude)
 

 

 

 

 

 

A vertically polarized antenna has a vertical beamwidth.
 

 

True
 

 

False
 

 

 

 

 

 

A/AN__________ antenna is considered to have 360 degrees of coverage?
 

 

Isotropic radiator
 

 

Omni-Directional
 

 

High Gain Yagi
 

 

Low Gain Grid
 

 

 

 

 

 

802.11n specifies CTS-to-Self as a protection method.
 

 

True
 

 

False
 

 

 

 

 

 

If all but one of the members of a service set are 802.11n capable devices __________ must be used to allow legacy client coexistence.
 

 

Mode 0
 

 

Mode 4
 

 

Mode 3
 

 

Mode 1
 

 

 

 

 

 

What types of antenna arrays are used in beamforming under 802.11n? (Choose two)
 

 

Phased Array
 

 

Switched Array
 

 

Adaptive Array
 

 

MIMO Array
 

 

SISO Array
 

 

 

 

 

 

SISO wireless clients can not connect to MIMO access points.
 

 

True
 

 

False
 

 

 

 
 

 

 
 

 

NTC 247 Week 1 Individual Assignment: Signal Power
 

Complete Problem 5.1 found in Chapter 5 of Wireless Communication Networks and Systems.

Create a table in a Microsoft® Word® document the same as you see in the problem.

Fill in the rest of the table and submit the Word® document file as your assignment.

Submit your assignment using the Assignment Files tab above.

 

 
 

 

 
 

 

NTC 247 Week 2 Individual: RF Math I
 

Based on your Week Two Learning Team Collaborative discussion, write a 1-page summary of the team’s discussion and explain the concepts of Radio Frequency you learned.

Submit the summary using the Assignment Files tab above.

 

 
 

 

 
 

 

NTC 247 Week 2 Individual: Week Two Quiz
 

Complete the Week Two quiz.

Submit your quiz using the Assignment Files tab above.

Week Two Quiz

 

 

 

 

 

Wireless is intended for use in the core role of networking.
 

 

True
 

 

False
 

 

 

 

 

 

The __________ of an RF signal is the distance between similar points on two back-to-back waves.
 

 

Frequency
 

 

Wavelength
 

 

Data Rate
 

 

Phase
 

 

 

 

 

 

Robust Security Network (RSN) was originally defined by which amendment?
 

 

802.11j
 

 

802.11i
 

 

802.11s
 

 

802.11r
 

 

802.11w
 

 

 

 

 

 

802.11j allows 10 MHz wide channels.
 

 

True
 

 

False
 

 

 

 

 

 

PBCC is compatible with DSSS.
 

 

True
 

 

False
 

 

 

 

 

 

Each OFDM Channel uses 52 separate precisely spaced frequencies called __________.
 

 

Sub frequencies
 

 

Sub carriers
 

 

Sub components
 

 

Sub modulations
 

 

 

 

 

 

An Independent Basic Service Set requires how many access points?
 

 

At least two
 

 

At least one
 

 

At most three
 

 

At most two
 

 

At most zero
 

 

 

 

 

 

When using an AP as a sensor, what AP mode is being used?
 

 

Root Mode
 

 

Repeater Mode
 

 

Scanner Mode
 

 

Bridge Mode
 

 

 

 

 

 

802.11ac operates in the 2.4 GHz frequency.
 

 

True
 

 

False
 

 

 

 

 

 

What modulation allows 802.11ac to operate at such high speeds?
 

 

BPSK
 

 

16-QAM
 

 

64-QAM
 

 

256-QAM
 

 

 

 
 

 

 
 

 

NTC 247 Week 2 Individual: Assignment Wireless LAN
 

Individual Assignment: Wireless LAN

Use a WiFi Scanner similar to Acrylic WiFi, Solar Winds, Fluke, and Channel Scanner to address the following:

Complete Problems 11.4 a., b., and c., 11.5, and 11.6 in Chapter 11 of Wireless Communication Networks and Systems.

Create a Microsoft® Word.doc and state the answers to all the questions.

11.4 – Is a distribution system (DS) a wireless network? Why or why not?

(List items a, b, c)

 

 

 

a.
 

 

b.
 

 

c.
 

 

11.5 – List and briefly define IEEE 802.11 services.

11.6 – How is the concept of an association related to that of mobility?

Note: The WiFi Scanner in the readings (Netstumbler) may not work for all operating systems.  It’s recommended that you use one of the WiFi scanners listed above to complete this assignment, as opposed to the one noted in the stated problem set (Netstumbler).

 

 
 

 

 
 

 

NTC 247 Week 3 Individual: RF Math II
 

Based on your Week Three Learning Team Collaborative discussion, write a 1-page summary of the team’s discussion and explain the components of Radio Frequency you learned.

Submit the summary using the Assignment Files tab above.

 

 
 

 

 
 

 

NTC 247 Week 3 Week Three Quiz
 

Complete the Week Three quiz.

Submit your quiz using the Assignment Files tab above.

Week Three Quiz

 

 

 

 

Which of the following are interframe space types used in 802.11 networks? (Choose all that apply)
 

 

PIFS
 

 

DIFS
 

 

SIFS
 

 

AIFS
 

 

HIFS
 

 

 

 

 

 

What are two of the main purposes of physical carrier sense? (Choose two)
 

 

To determine if there is inbound traffic for a station
 

 

To determine if there is outbound traffic for a station
 

 

To determine if the medium is busy prior to transmission
 

 

To determine if the medium is busy after transmission
 

 

To determine the IFS that follows a frame
 

 

 

 

 

 

The 802.11-2007 standard did not require all unicast frames to be acknowledged.
 

 

True
 

 

False
 

 

 

 

 

 

When a wireless client is passively scanning for a BSS to join they are listening for a __________.
 

 

Request to Send Frame
 

 

Probe Response Frame
 

 

Probe Request Frame
 

 

Beacon Management Frame
 

 

 

 

 

 

 

To configure a wireless client card, an end user must have a software interface referred to as a __________.
 

 

Client Utility
 

 

Configuration Utility
 

 

Wireless Driver
 

 

OS Plug in
 

 

 

 

 

 

What are the two terms most often used to describe an AP that is able to function without the use of a WLAN controller? (Choose two)
 

 

Autonomous AP
 

 

Controller Independent AP
 

 

FAT AP
 

 

SOHO AP
 

 

Thin AP
 

 

 

 

 

 

All AP’s support PoE.
 

 

True
 

 

False
 

 

 

 

 

 

The 802.3-2005 version of the standard defines PoE in clause __________.
 

 

33
 

 

32
 

 

34
 

 

AT
 

 

 

 

 

 

What types of devices can provide power to a PD within a WLAN? (Choose two)
 

 

Midspan
 

 

Endpoint
 

 

MIMO
 

 

SISO
 

 

Bridge Endpoints
 

 

 

 

 

 

What element in a Beacon Management Frame alerts dozing stations that they have traffic buffered on the AP?
 

 

ATIM
 

 

CTS
 

 

Duration
 

 

TIM
 

 

 

 
 

 

 
 

 

NTC 247 Week 3 Individual: Channels
 

Complete the following problems in Chapter 13 of Wireless Communication Networks and Systems in a Microsoft® Word® document:

 

 

 

13.2 

 

 

 

a.
 

 

b.
 

 

c.
 

 

d.
 

 

 
 

 

Submit your assignment using the Assignment Files tab above.

 

 
 

 

 
 

 

NTC 247 Week 4 Individual: RF Math III
 

Based on your Week Four Learning Team Collaborative discussion, write a 1-page summary of the team’s discussion and identify the Radio Frequency signal characteristics and antenna concepts you learned.

Submit the summary using the Assignment Files tab above.

 

 
 

 

 
 

 

NTC 247 Week 4 Individual: Week Four Quiz
 

Complete the Week Four quiz.

Submit your quiz using the Assignment Files tab above.

Week Four Quiz

 

 

 

 

Aesthetics are often a consideration in WLAN site surveys.
 

 

True
 

 

False
 

 

 

 

 

 

Which of the following refers to the policy of permitting employees to bring personally owned mobile devices such as smartphones, tablets, and laptops to their workplace?
 

 

BPSK
 

 

BYOD
 

 

NAC
 

 

MDM
 

 

 

 

 

 

Which of the following is used to onboard personal mobile devices as well as company issued devices (CIDs) to the WLAN?
 

 

BPSK
 

 

BYOD
 

 

NAC
 

 

MDM
 

 

 

 

 

 

Legacy RSN use mandates AES as the encryption type.
 

 

True
 

 

False
 

 

 

 

 

 

The Rijndael algorithm is used in which encryption mechanism?
 

 

WEP
 

 

WPA
 

 

CCMP
 

 

TKIP
 

 

 

 

 

 

Which of the following can be used in passive reconnaissance attacks?
 

 

Deauthentication flood attacks
 

 

Frame capturing tools
 

 

Man in the Middle Attacks
 

 

Null Probe Frames
 

 

 

 

 

 

Mobility across multiple topologies is provided by __________.
 

 

Frequency Hopping Spread Spectrum
 

 

Fixed Mobile Convergence
 

 

Frequency Diversity
 

 

Multiple Input Multiple Output
 

 

 

 

 

 

Where would be the best place to use mobile office networking? (Choose two)
 

 

PtP Bridges
 

 

PtMP Bridges
 

 

Warehousing
 

 

Disaster Relief
 

 

Construction Sites
 

 

 

 

 

 

Using a high gain antenna increases throughput.
 

 

True
 

 

False
 

 

 

 

 

 

The process of placing multiple AP’s in the same physical area to increase capacity is called __________.
 

 

Co-Location
 

 

Co-Habitation
 

 

Co-Channel
 

 

Co-Balance
 

 

 

 
 

 

 
 

 

NTC 247 Week 4 Individual: Retransmission
 

Complete the following problem 12.1 in Chapter 12 of Wireless Communication Networks and Systems in a Microsoft® Word® document.

Submit your assignment using the Assignment Files tab above.

 

 
 

 

 
 

 

NTC 247 Week 5 Individual: Collaboration Discussions Summary
 

Write a 1- to 2-page paper describing the Rule of 10s and 3s and how you learned these formulas and what their value is.

Format your paper according to APA guidelines

Submit your assignment using the Assignment Files tab above.

 

 
 

 

 
 

 

NTC 247 Week 5 Individual: Week Five Quiz
 

Complete the Week 5 quiz.

Submit your quiz using the Assignment Files tab above

Week Five Quiz

 

 

 

 

Aesthetics are often a consideration in WLAN site surveys.
 

 

True
 

 

False
 

 

 

 

 

 

When a user has the requirement to stay connected 100% of the time as they move throughout the WLAN coverage area, they are concerned about __________.
 

 

Being Mobile
 

 

Mobility
 

 

VoIP
 

 

Infrastructure Connectivity
 

 

 

 

 

 

What are some of the issues faced when planning capacity and coverage? (Choose two)
 

 

Cost
 

 

Protocol
 

 

User Density
 

 

Facilities Escorts
 

 

Application Use
 

 

 

 

 

 

A previous site survey can be of use in future site survey work.
 

 

True
 

 

False
 

 

 

 

 

 

When planning WLAN coverage within a multitenant building, what is the biggest issue to consider?
 

 

X10 Cameras
 

 

Microwaves
 

 

Neighboring WLAN devices
 

 

Channel Use
 

 

 

 

 

 

When possible, what should you use to conduct an active survey?
 

 

The same equipment as selected for deployment
 

 

A blueprint of the building being surveyed
 

 

An RF Jammer
 

 

The same applications that are to be used in the WLAN
 

 

 

 

 

 

When conducting an outdoor survey for a long distance point-to-point bridge, what should be documented?
 

 

Prevailing Winds
 

 

Interference sources near endpoints
 

 

Clear Channels
 

 

All of the Above
 

 

 

 

 

 

When towers are to be used in an outdoor WLAN deployment what information should be gathered?
 

 

Local Ordinances
 

 

Planned Tower Height
 

 

Microwave Oven use
 

 

User Density
 

 

 

 

 

 

When conducting a site survey for 5 GHz, what should be documented?
 

 

X10 Camera placements
 

 

Microwave oven use
 

 

Cordless Phone use
 

 

Radar use
 

 

 

 

 

 

When conducting manual site surveys, which of the following may be of use to the survey team?
 

 

Walkie Talkies?
 

 

Digital Cameras?
 

 

Sling Cyclometers?
 

 

Measuring wheels?
 

 

 

 

 
 

 

NTC 247 Week 5 Individual: LTE
 

Complete the following problems in Chapter 14 of Wireless Communication Networks and Systems in a Microsoft® Word® document:

 

 

 

14.1
 

 

14.2
 

 

14.3
 

 

14.4
 

 

Submit your assignment using the Assignment Files tab above.

 

 
 

 

 
 

 

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
 

 

 

 

 
 

 

NTC 247 Week 5 Individual: Final Assignment Review Questions
 

Complete Review Questions 2.1-2.16 in Chapter 2 of Wireless Communication Networks and Systems in a Microsoft® Word® document.

Submit your assignment using the Assignment Files tab above.
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