Prueba Actual Computing 2

Período Académico: Oct. 2012 – Feb. 2013
Fecha: 1 de Noviembre del 2012
Estrega antes de: 12 de Noviembre del 2012
Profesor: Ing. Santiago Puga, M.Sc.

NOTA PRIMER PARCIAL
ACTUAL COMPUTING TOPIC II

Choose the correct answer. Some questions are in English and others are in Spanish. You have two bibliographic references: “Redes y Transmision de Datos”, chapter 14 and IEEE documents802.11a-1999.pdf , 802.11b-1999.pdf, 802.11g-2003.pdf and 802.11n-2009.pdf

You should underline the correct answer in a printed sheet and write a reference of the book and page you found the answer.

Example:

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____ 1. A _______ is a temporary endeavor undertaken to create a unique product, service, or result.-------------------------------------------------
a. Product
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b. Project
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c. Strategy
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d. Task
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e. Program See PMBOK Chapter 1, page 5

1. Which of the following 802.11 standards can make use of both the 2.4- and 5-GHz bands?A) 802.11a
B) 802.11b
C) 802.11g
D) 802.11n
802.11n-1999 Pg. 1 
2. IEEE has defined the specifications for a wireless LAN, called _______, which covers the physical and data link layers.
A) IEEE 802.3
B) IEEE 802.5
C) IEEE 802.11
D) IEEE 802.2
802.11b-1999 Introduction Pg. 4

3. What is the technical name of a wireless network?
A) SSID
B) BSSID
C) SSD
D) WPA802.11n-1999 Chapter 7 Pg. 14 
4. In IEEE 802.11, a ___ is made of stationary or mobile wireless stations and an optional central base station, known as the access point (AP).
A) ESS
B) BSS
C) CSS
D) none of the above

5. What is a cheap and easy way to extend the range of a AP?
A) Upgrade the antenna.
B) Buy a AP that advertises a longer range.
C) You can’t easily boost range.
D)Upgrade the wireless NICs.

6. In IEEE 802.11, a BSS without an AP is called an _________.
A) an ad hoc architecture
B) an infrastructure network
C) either (a) or (b)
D) neither (a) nor (b)

7. Which wireless standard combines the longest range with the most throughput?
A) 802.11a
B) 802.11b
C) 802.11g
D) 802.11n

8. In IEEE 802.11, a BSS with an AP is sometimes referredto as ____________.
A) an ad hoc architecture
B) an infrastructure network
C) either (a) or (b)
D) neither (a) nor (b)

9. What is the approximate range of an 802.11b/g network?
A) ~1000 ft
B) ~300 ft
C) ~150 ft
D) ~500 ft
Pág 3, Introducción – 802.11b-1999

10. In IEEE 802.11, communication between two stations in two different BSSs usually occurs via two ________.A) BSSs
B) ESSs
C) APs
D) none of the above
Pág 215, Capitulo 11 – 802.11n-2009
11. Two wireless nodes that are communicating directly with each other, without any intermediary systems or hardware, are using what wireless mode?
A) Ad hoc
B) Bluetooth
C) Infrastructure
D) 802.11
Pág 215, Capitulo 11 – 802.11n-2009
12. In IEEE 802.11, a station with ________ mobility is eitherstationary (not moving) or moving only inside a BSS.
A) no-transition
B) BSS-transition
C) ESS-transition
D) none of the above
Pág 66, Capitulo 7 – 802.11n-2009

13. What is the frequency range of the IEEE 802.11b standard?
A) 2.4Gbps
B) 5Gbps
C) 2.4GHz
D) 5GHz
IEEE 802.11b-1999 pg 24
14. In IEEE 802.11, a station with ________mobility can move from one BSS to another, butthe movement is confined inside one ESS.
A) no-transition
B) BSS-transition
C) ESS-transition
D) none of the above
IEEE 802.11-1997 pg 34
15. What is the maximum distance with maximum data rate for 802.11a?
A) About 65-75 feet
B) About 90-100 feet
C) About 150 feet
D) Over 200 feet
IEEE 802.11a-1999 pg 5
16. In IEEE 802.11, a station with ________ mobility can move from one...