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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