This set of Wireless & Mobile Communications Multiple Choice Questions & Answers (MCQs) focuses on “Digital European Cordless Telephone (DECT)”.
1. Cordless telephone standard, DECT stands for ____________
a) Discrete European Cordless Telephone
b) Digital European Cellular Telephone
c) Discrete European Cellular Telephone
d) Digital European Cordless Telephone
View Answer
Explanation: The Digital European Cordless Telephone (DECT) is a universal cordless telephone standard. It was developed by the European Telecommunications Standard Institute (ETSI).
2. Which of the following is not true for DECT?
a) High traffic density
b) Long range telecommunication
c) Broad range of application
d) First pan European standard
View Answer
Explanation: DECT provides a cordless communication framework for high traffic density, short range telecommunications. It covers a broad range of applications and environments.
3. DECT can be used by users in an in-building PBX.
a) True
b) False
View Answer
Explanation: The main function of DECT is to provide local mobility to portable users in an in-building Private Branch Exchange (PBX). It provides excellent quality and services for voice and data applications.
4. The DECT system is based on __________ principles.
a) TCP
b) IP
c) OSI
d) AMPS
View Answer
Explanation: The DECT system is based on OSI (Open System Interconnection) principles in a manner similar to ISDN. A control plane (C-plane) and a user plane (U-plane) use the services provided by the lower layers.
5. Which of the following layer consists of paging channel and control channel?
a) Physical layer
b) Network layer
c) Data link layer
d) MAC layer
View Answer
Explanation: The MAC (Medium Access Control) layer consists of a paging channel and a control channel for the transfer of signalling information to the C-plane. The U-plane is served with channels for the transfer of user information.
6. Which of the following layer is responsible for providing reliable data links?
a) Physical layer
b) Network layer
c) Data link control layer
d) MAC layer
View Answer
Explanation: The DLC (data link control) layer is responsible for providing reliable data links to the network layer. It divides up the logical and physical channels into time slots for each user.
7. __________ is the main signalling layer of DECT.
a) Physical layer
b) Network layer
c) Data link layer
d) MAC layer
View Answer
Explanation: The network layer is the main signalling layer of DECT. It is based on GSM and ISDN (layer 3) protocols. It provides call control and circuit switched services selected from one of the DLC services.
8. Which of the following supports the physical layer of DECT common air interface?
a) Portable Handset
b) Network specific Interface Unit
c) Radio Fixed Part
d) Cordless controller
View Answer
Explanation: RFP (Radio Fixed Part) supports the physical layer of the DECT common air interface. Every RFP covers one cell in the microcellular system. A full duplex operation is achieved using TDD.
9. ________ supports the call completion facility in a multihandset environment.
a) Portable Handset
b) Network specific Interface Unit
c) Radio Fixed Part
d) Cordless controller
View Answer
Explanation: Network specific Interface Unit supports the call completion facility in a multihandset environment. The interface recommended by the CCITT is the G.732 based on ISDN protocols.
10. __________ is a third generation Personal Communication System.
a) PACS
b) AMPS
c) IS-95
d) GSM
View Answer
Explanation: PACS (Personal Access Communication Systems) is a third generation Personal Communication System. It was originally developed and proposed by Bellcore in 1992.
11. _________ is also known as Japanese Digital Cellular.
a) PACS
b) AMPS
c) PDC
d) GSM
View Answer
Explanation: PDC (Pacific digital cellular) is also known as Japanese Digital Cellular. It was developed in 1991 to provide for needed capacity in congested cellular bands in Japan.
Sanfoundry Global Education & Learning Series – Wireless & Mobile Communications.
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