NETW563 Midterm Exam Latest

NETW563 WIRELESS NETWORKS KELLER

Midterm Exam

(TCO A) A wireless client network interface card performs each of the following tasks except

Transmitting the packet over radio waves.

Determining when to send the packet.

Dividing data into packets.

Sending packets to a wired network through a root remote wireless bridge.

(TCO A) A _____ is a million hertz.

Kilohertz

Megahertz

Gigahertz

Kilohertz

(TCO C) The bit pattern used in a WLAN direct sequence spread spectrum transmission is called the

Barker code.

Oscillation modulation.

Chip set.

XOR Inverse (XORI).

(TCO C) _____ is a group of wireless devices that is served by a single access point (AP).

Basic Service Set

Ad hoc mode

Extended Service Set

Independent Service Set

(TCO D) Each of the following is a design goal of a site survey except

Implement a wired network infrastructure.

Achieve the best possible performance from a WLAN.

Determine the best location for access points.

Develop wired networks optimized for a variety of applications.

(TCO D) A device that converts direct current from a battery to alternating current is a(n) (Points : 5)

DC-to-AC converter.

AC-to-DC converter.

Universal Power Adapter (UPA).

Power Converter (PC).

(TCO E) After the security flaws in WEP were publicized, the IEEE TGi task group released a new proposed implementation known as what?

WPA

WEP2

TKIP

Dynamic TKIP

(TCO E) WPA and WPA2 were created by which organization?

IEEE

CompTIA

Wi-Fi Alliance

Wireless Research Resource Group (WRRG)

(TCO A) Give a brief summary of the characteristics of IEEE 802.11b, 802.11a, and 802.11g wireless networks. (Points: 10)

(TCO A) What are some limitations to infrared wireless LAN systems? (Points: 10)

(TCO C) What is fragmentation, and how does fragmentation reduce collisions? (Points: 10)

(TCO C) What are two disadvantages of IEEE 802.11g networks? (Points: 10)

(TCO D) Explain channel reuse. (Points: 10)

(TCO E) Explain how WEP violates the “cardinal rule” of cryptography. (Points: 10)