Wireless Mobile Communications Subcategories

Tcp Ip Protocol	Wireless Local Area Networks Wlans
Third Generation 3G Wireless Networks	Internet Protocol Version 6 Ipv6
Network Protocols	Protocols
Broadband Radio Access Network	Next Generation Wireless Network Communication Policies 1
Femtocell Network	Traffic Routing Wireless Networks
Integrated Services Digital Network Isdn	Wireless Fixed Telephone Networks
4G Network Architecture	Optical Network Concepts

In a wireless communication, base station is connected to central hub called _______

A. Pstn
B. Msc
C. Co
D. Pbx

Explanation: To provide wireless communication within a particular geographic region, an integrated network of base stations must be deployed to provide sufficient radio coverage to all mobile users. The base station, in turn must be connected to a central hub called MSC (mobile switching center).

PSTN stands for ________

A. Public switched telephone network
B. Personal switched telephone network
C. Personal switched telephone node
D. Public switched telephone node

Explanation: PSTN stands for public switched telephone network. The PSTN forms the global telecommunication grid which connects conventional telephone centers with MSCs throughout the world.

MSCs provide connectivity between PSTN and the base stations.

A. True
B. False
C.
D.

Explanation: The MSC provide connectivity between the public switched telephone network (PSTN) and the numerous base stations. It ultimately provides connectivity between all of the wireless subscribers in the system.

Communication protocol, CAI stands for ___________

A. Common air interchange
B. Control air interchange
C. Common air interface
D. Control air interchange

Explanation: To connect mobile subscribers to the base stations, radio links are established using a carefully defined communication protocol called common air interface (CAI) which in essence is a precisely defined handshake communication protocol.

At the base station, the air interface portion of mobile transmission is passed to MSC.

A. Of the mo
B. False
C.
D.

Explanation: At the base station, the air interface portion (i.e., signalling and synchronization data) of the mobile transmission is discarded, and the remaining voice traffic is paased along to the MSC on fixed networks.

PSTN is ___________ and wireless networks are ________

A. Highly dynamic, virtually static
B. Static, virtually static
C. Highly dynamic, virtually dynamic
D. Virtually static, highly dynamic

Explanation: The network configurations in the PSTN are virtually static, since the network connections may only be changed when a subscriber changes residence. Wireless networks are highly dynamic with the network configuration being rearranged everytime a new subscriber moves into the coverage region of a different base station.

In public switched telephone network, LATA stands for ______

A. Local access and transport area
B. Land area and transport area
C. Local access and telephone access
D. Local area and telephone access

Explanation: In public switched telephone network, LATA stands for Local access and transport area. LATA is a city or a geographic grouping of towns in PSTN.

LATAs are connected by a company called _________

A. Land exchange carrier
B. Local exchange carrier
C. . a lec is a company that provides telephone services and may be a local telephone company.
D. Land area exchange

Explanation: Surrounding LATAs are connected by a company called a local exchange carrier (LEC). A LEC is a company that provides telephone services and may be a local telephone company.

A long distance telephone company that collects toll is called _________

A. Lata
B. Lec
C. Pstn
D. Ixc

Explanation: A long distance telephone company collects toll fees to provide connections between different LATAs over its long distance network. These companies are referred to as interexchange carriers (IXCs).

Wireless networks are extremely hostile and random nature of radio channel.

A. True
B. False
C.
D.

Explanation: A problem unique to wireless networks is the extremely hostile and random nature of the radio channel, and since users may request service from any physical location while traveling over a wide range of velocities.