Rake Receivers MCQ’s

This set of Digital Communications Systems Multiple Choice Questions & Answers (MCQs) focuses on “Rake Receivers”. 1. Rake receiver doesa) Counter effects multi-path fadingb) Resembles equalizerc) Resembles equalizer & Counter effects multi-path fadingd) None of the mentioned 2. Diversity technique is applied ata) Base stationb) Mobile receiverc) Base station & Mobile receiverd) None of the […]

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Signal Time Spreading MCQ’s

This set of Digital Communications Systems Multiple Choice Questions & Answers (MCQs) focuses on “Signal Time Spreading”. 1. When channel coherence bandwidth is greater than the transmitted signal bandwidth ______ occurs.a) Time selectiveb) Frequency selectivec) Frequency non selectived) None of the mentioned 2. When a user’s moving, the user’s velocity causes shift in frequency. This […]

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Stream Encryption Applications MCQ’s

This set of Digital Communications Systems Multiple Choice Questions & Answers (MCQs) focuses on “Stream Encryption Applications”. 1. In which method cipher feedback is used?a) Synchronous encryption methodb) Self synchronous encryption methodc) All of the mentionedd) None of the mentioned 2. In substitution technique encryption protection is more.a) Trueb) False 3. One-time pad hasa) Random […]

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Cipher Systems Secrecy MCQ’s

This set of Digital Communications Systems Multiple Choice Questions & Answers (MCQs) focuses on “Cipher Systems Secrecy”. 1. The key also contains aa) Plaintextb) Ciphertextc) Plaintext & Ciphertextd) None of the mentioned 2. The _____ the uncertainty, the ______ is the information content.a) Lesser, greaterb) Greater, lesserc) Lesser, lesserd) Greater, greater 3. Caesar cipher was […]

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Cellular Systems MCQ’s

This set of Digital Communications Systems Multiple Choice Questions & Answers (MCQs) focuses on Cellular Systems “. 1. The steps followed in forward channel CDMA includesa) Modulo 2 additionb) Channelizationc) Modulo 2 addition & Channelizationd) None of the mentioned 2. Bandwidth efficiency improvement involvesa) Dividing the geographical region into cellsb) Allowing frequency allocationc) Dividing the […]

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Acquisition and Tracking MCQ’s

This set of Digital Communications Systems Multiple Choice Questions & Answers (MCQs) focuses on “Acquisition and Tracking”. 1. Tracking maintains the possible waveform ______ alignment using a feedback loop.a) Fineb) Coarsec) Fine & Coarsed) None of the mentioned 2. How many correlators are used for despreading and code tracking function?a) Oneb) Twoc) Threed) None of […]

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Network Synchronization MCQ’s

This set of Digital Communications Systems Multiple Choice Questions & Answers (MCQs) focuses on “Network Synchronization”. 1. Coherent modulation requires ____ level of synchronization.a) Oneb) Twoc) Threed) None of the mentioned 2. Synchronization is used in system which hasa) Non coherent modulation techniquesb) Many users accessingc) Non coherent modulation techniques & Many users accessingd) None […]

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Noise Parameters MCQ’s

This set of Digital Communications Systems Multiple Choice Questions & Answers (MCQs) focuses on “Noise Parameters”. 1. In which repeaters uplink is decoupled from the downlink?a) Regenerativeb) Non regenerativec) Regenerative & Non regeneratived) None of the mentioned 2. Which parameter is referred to as receiver sensitivity?a) S/N ratiob) G/T ratioc) EIRPd) PR/N0 3. AM-to-PM conversion […]

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