PPSC - Past Papers - Most Repeated — Test 22

Correct Answer: C. C. High cost
Explanation: Femtocell Base Stations (F-BSs) are short-range, low-cost, low-power indoor devices to provide service for wireless handsets. F-BS, which looks like WLAN Access Point (AP), is a small device with at least two wireless and internet interfaces.

Correct Answer: B. B. False
Explanation: Wireless interface provides wireless radio access to Femtocell MSs. Any existing wireless telecommunication standard, such as UMTS/ CDMA200/ WIMAX/ LTE/ EV-DO, can be used at the F-BS wireless interfaces.

Correct Answer: C. C. Fgw
Explanation: Femtocell Gateway (FGW) is a service provider’s device that acts as a gateway between the Internet and the communication network. One side of FGW connects a large number of F-BSs via broadband Internet, and the other side of FGW is connected to the telephony core network.

Correct Answer: A. A. True
Explanation: Femtocell Network is a so-called “double-win” strategy that brings benefits to both cellular users and cellular providers. It provides improved seamless coverage and enhanced capacity for cellular users.

Correct Answer: B. B. Open access mode
Explanation: In open access mode, all cellular users belong to open subscribers group (OSG) and can access F-BS unconditionally. Several cellular service providers have plans to deploy F-BS for better service quality to cover public hole areas.

Correct Answer: A. A. Closed access mode
Explanation: In closed access mode, a closed subscribers group (CSG) is set by F-BS owner to allow only small portion of cellular users to be served in the Femtocell Network. For example, people can install F-BS in their house and only household members can access F-BS to attain better service.

Correct Answer: A. A. True
Explanation: Femtocell Network has the capability to help Macro cell Network achieve seamless coverage. It can attain higher network capacity by transmitting over an Internet link.

Correct Answer: A. A. True
Explanation: The type of traffic carried by a network determines the routing services. It also determines protocols, and call handling techniques which must be employed.

Correct Answer: B. B. Virtual circuit routing
Explanation: Connection oriented services are also called virtual circuit routing. In connection oriented routing, the communications path between the message source and destination is fixed for the entire duration of the message.

Correct Answer: A. A. Datagram services
Explanation: Connectionless services are also called datagram services. In a connectionless service, a call set up procedure is not required at the beginning of a call, and each message burst is treated independently by the network.