Network+Guide Chapter-6 Review Question

The secondary waves continue to propagate in the direction in which they were split. (bending around an obstacle)

Diffraction

12. Which kind of antenna is used in a point-to-point link?

Directional Antena

compared with their respective theoretical throughputs?

Wireless networks experience a high number of collisions and require a greater overhead

bonding capabilities. What size channels does 802.11ac support?

20.40.80.120

15. Which frequency band offers 24 unlicensed communications channels in the United States?

5.Ghz band

her requests?

Guest networking

18. What feature of a site survey maps the Wi-Fi signals and other noise in your location?

Heat map

ensures that he can now perform a remote wipe?

On Boarding

other?

a. Ad hoc

3. Which Bluetooth class has the highest power output?

a. Class 1

middle of the 100-acre campus. What kind of threat do you need to report to your boss?

a. Rogue access point

7. Which 802.11 standard can be used in both the 2.4-GHz and the 5-GHz bands?

b. 802.11n

1. What is the lowest layer of the OSI model at which wired and wireless transmissions share the same protocols?

b. Layer 3

Coffee and Internet." What kind of security trap did you almost fall for?

c. Evil twin

use will exhibit a lower because of the high proportion of noise.

(SNR) signal -to - noise ratio

5. A user swipes her smartphone across a tag on a poster to obtain showtimes for a movie she wants to see later that evening. What wireless technology transmitted the data?

c. NFC

2. Which one of the following wireless transmission types does NOT require a clear LOS to function?

c. Wi-Fi

4. A hacker takes advantage of a Bluetooth connection to send a virus to a user's phone.What kind of security breach has occurred?

d. Bluejacking

8. Which Carrier Sense technology is used on wireless networks to reduce collisions?

d. CSMA/CA