Ch. 6 - Wireless Networking

Question 1

The wireless spectrum spans

Answer 1

Spans frequency ranges or bands between 9 kHz and 300 GHz

Question 2

Based on the 802.15.4 standard

A low-powered, battery-conserving wireless technology

Answer 2

ZigBee

Question 3

A smart home protocol that provides two basic types of functions:
Signaling to manage wireless connections,
Control to transmit data and commands between devices

Answer 3

Z-Wave

Question 4

gathers and tracks information from sensors typically embedded in heart rate monitors, G P S devices, and other activity monitoring devices

Answer 4

ANT+

Question 5

802.11 WLAN standards vary at layer

Answer 5

1

Question 6

WLANS work at OSI layer(s)

Answer 6

1 and 2

Question 7

3 data streams, 1.3 Gbps

Answer 7

802.11ac wave 1

Question 8

4 data streams, 3.47 Gbps

Answer 8

802.11ac wave 2

Question 9

8 data streams, 6.93 Gbps

Answer 9

80211ac wave 3

Question 10

Minimizes collision potential

Uses ACK packets to verify every transmission

Answer 10

CSMA/CA (Carrier Sense Multiple Access with Collision Avoidance)

Question 11

Ensures packets not inhibited by other transmissions

Answer 11

RTS/CTS (Request to Send/Clear to Send) protocol

Question 12

(frame type groups) association and reassociation

Answer 12

Management frames

Question 13

(frame type groups) mediate access and data delivery

Answer 13

Control frames

Question 14

(frame type groups) carry data sent between stations

Answer 14

Data frames

Question 15

Centralized wireless management is made possible by a lightweight wireless protocol

Answer 15

Cisco’s LWAPP (Lightweight Access Point Protocol) or Cisco’s CAPWAP (Control and Provisioning of Wireless Access Points)

Question 16

Commands to view and set wireless interface parameters

Answer 16

Linux: iwconfig
Windows: netsh wlan