Wireless & Mobile Communications online test on “Personal Communication Services/Networks (PCS/PCNs)”.
1. PCS/PCN provides only wired communication.
a) True
b) False
Answer: b
Clarification: The objective of personal communication systems (PCS) or personal communication networks (PCNs) is to provide ubiquitous wireless communications coverage, enabling users to access telephone network and Internet.
2. Concept of PCS/PCN is based on _________
a) Advanced intelligent network
b) Artificial intelligent network
c) CDPD
d) SS7
Answer: a
Clarification: The concept of PCS/PCN is based on an advanced intelligent network (AIN). The mobile and fixed networks will be integrated to provide universal access to the network and its databases.
3. AIN has different telephone numbers for both wireline and wireless services.
a) True
b) False
Answer: b
Clarification: AIN (advanced intelligent network) allow its users to have a single telephone number to be used for both wireless and wireline services.
4. Circuit switching has more advantage than packet switching for PCS.
a) True
b) False
Answer: b
Clarification: Packet switching technology will have more advantages for PCS/PCN than circuit switching. PCS is required to serve a wide range of services including voice, data, e-mail and digital video.
5. ______ is used for transmission of packets in the cellular switched architecture.
a) Packet switching techniques
b) Circuit switching techniques
c) Packet and circuit switched technique
d) Datagram technique
Answer: a
Clarification: Packet switching techniques are used for transmission of packets in the cellular switched architecture. Packet switching is attractive for wireless networks because the addresses and other information in packet headers make it possible for dispersed network elements to respond to a mobile user without intervention central controllers.
6. Which of the following has the function to accept information from PSTN?
a) TIU
b) WIU
c) BIU
d) CIU
Answer: a
Clarification: The function of TIU (Trunk interface unit) is to accept information from the PSTN. TIU acts as the physical layer and transforms the standard format of the PSTN into the wireless access physical layer.
7. PTI is the address of ____________
a) TIU
b) WIU
c) BIU
d) CIU
Answer: a
Clarification: PTI (Permanent terminal identifier) is the address of TIU. It is the address from where he call is originated.
8. _______ is the information contained in the packet header of TIU.
a) PTI
b) VCI
c) PRMA
d) CDPD
Answer: b
Clarification: VCI (virtual circuit identifier) is the information contained in the packet header of TIU. It is used to identify the route through which the transmission will take place.
9. Transmission protocol, PRMA stands for _________
a) Pocket reservation multiple access
b) Packet register multiple access
c) Pocket register multiple access
d) Packet reservation multiple access
Answer: d
Clarification: Transmission protocol, PRMA stands for packet reservation multiple access. PRMA is a time division multiplex (TDM) based multiple access protocol that allows a group of spatially dispersed terminals to transmit packet voice and low bit rate data over a common channel.
10. UMTS stands for ____________
a) Universal mobile telecommunication system
b) Universal mobile telephone system
c) United multiplex telecommunication system
d) Universal mobile telecommunication system
Answer: d
Clarification: UMTS stands for Universal mobile telecommunication system. It is a system that is capable of providing a variety of mobile services to a wide range of global mobile communication standards.
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