WorksheetsWireless LANs ICE 3201
Total questions: 20
Worksheet time: 10mins
What is the IEEE standard for wireless LANs?
IEEE 802.1
IEEE 802.2
IEEE 802.3
IEEE 802.11
Which of the following is NOT a characteristic of wireless LANs?
Mobility
High error rate
High bandwidth
Wired connections
The 802.11 standard defines the MAC sublayer and the _______ layer.
Session
Application
Physical
Transport
Which of the following is a type of antenna used in wireless LANs?
Reflective
Parabolic
Omnidirectional
Magnetic
In 802.11, what does SSID stand for?
Static Signal ID
Service Set Identifier
System Subnet ID
Signal System Identification
The basic service set (BSS) includes:
All wireless devices in a city
A set of stations and an access point
Multiple LANs interconnected
All mobile devices in a network
What is the function of the access point (AP)?
Encrypts data
Connects wireless clients to a wired network
Stores routing tables
Assigns IP addresses
Which one is NOT an access method used in 802.11 MAC?
CSMA/CD
CSMA/CA
Token passing
Interframe spacing
In 802.11, what is used to avoid collision?
ARQ
RTS/CTS mechanism
CRC
Hamming code
The Distributed Coordination Function (DCF) is based on:
Token Ring
CSMA/CA
Frequency Division
Time Division
The Interframe Space (IFS) is used to:
Address collisions
Transmit signals faster
Synchronize network clocks
Prioritize access to the medium
What type of address is used in a wireless LAN frame?
Only IP addresses
MAC and IP
Four MAC addresses
Single MAC address
Which of the following is used to authenticate a station in an infrastructure network?
CSMA/CA
Association and authentication services
RTS/CTS
MAC filtering only
Which 802.11 extension provides higher data rates up to 54 Mbps?
802.11a
802.11b
802.11g
802.11c
Which frequency band does 802.11b use?
900 MHz
2.4 GHz
2.4 GHz
5 GHz
What is the value of subfields in control frames for CTS
1011
1100
1011
1101
The Extended Service Set (ESS) is made up of:
Single access point
Peer-to-peer stations only
Multiple BSSs connected via a distribution system
A subnet of mobile IP devices
What is the typical transmission range of a wireless LAN indoors?
500 meters
30-100 meters
1 kilometer
10 meters
Which one is NOT a frame type in 802.11?
Data
Management
Control
Session
What is the role of the beacon frame in 802.11?
Error detection
Network advertisement and synchronization
IP address allocation
Session setup
