Chapter 7 · MCQ Read Mode

Communication System

The basic building-block chain of a communication system is:

Compared to analog systems, digital communication systems offer the key advantage of:

Signal-to-Noise Ratio (SNR) is defined as:

Thermal noise in a receiver is best classified as:

A digital communication system converts the message into:

Regeneration in a digital communication system refers to:

The transmitter in a communication system is primarily responsible for:

Analog communication systems are generally more susceptible than digital systems to:

The receiver's primary role in a communication system is to:

Noise entering a communication system primarily corrupts the signal at the:

A low pass signal is characterized by significant frequency content:

A band pass signal is characterized by significant frequency content:

For distortionless transmission, the system output must satisfy:

Distortionless transmission requires the system's magnitude response to be:

Distortionless transmission requires the system's phase response to be:

A non-flat magnitude response in a transmission system causes:

The Hilbert transform of a signal shifts each frequency component by:

The Hilbert transform is commonly used in generating:

The bandwidth of a system determines primarily:

An analytic signal, constructed using the Hilbert transform, is used to define:

In Amplitude Modulation, the carrier's amplitude is varied in proportion to:

In Frequency Modulation, the carrier's frequency spectrum consists of:

Conventional (full) AM, compared to DSB-SC, transmits:

Synchronous (coherent) detection is required for demodulating:

Carson's rule is used to estimate the bandwidth of:

Among ASK, FSK, and PSK, which generally offers the best noise resistance?

Phase Shift Keying (PSK) represents digital data by varying the carrier's:

M-ary data communication systems encode how many bits per symbol?

Increasing M in an M-ary modulation scheme generally:

Narrowband FM (NBFM) is characterized by a modulation index β that is:

The standard analog-to-digital communication process follows the order:

Source coding is applied primarily to:

Pulse Code Modulation (PCM) represents sampled and quantized values as:

Non-uniform quantization (via companding) is used primarily to:

For a uniform quantizer, the maximum quantization error is:

The Shannon-Hartley theorem gives channel capacity as:

Increasing the signal-to-noise ratio (S/N), according to Shannon-Hartley, generally:

Time Division Multiplexing (TDM) shares a channel among signals by dividing it in:

Frequency Division Multiplexing (FDM) is most commonly associated with:

Pulse Amplitude Modulation (PAM) varies the:

The self-information of an event with probability p is given by:

Entropy of a source represents:

Unipolar NRZ line coding is characterized by having:

Bipolar (AMI) line coding alternates the polarity of successive:

Manchester coding guarantees a signal transition:

Inter-Symbol Interference (ISI) refers to:

The raised-cosine pulse shape is designed to achieve:

Which of the following is an example of a block error control code?

Convolutional codes are typically decoded using:

Line coding is applied primarily to:

A random signal (stochastic process) is best described by:

A wide-sense stationary (WSS) process has:

A process is called ergodic if:

White noise is characterized by having:

Thermal noise in a receiver is well-approximated, over practical bandwidths, as:

Bandlimited white noise differs from ideal white noise in that bandlimited white noise has:

The power spectral density (PSD) of a random process describes:

The autocorrelation function R(τ) of a WSS process measures:

The Wiener-Khinchin theorem relates power spectral density to:

For ideal white noise, the autocorrelation function is:

Which entity has its own memory space, program counter, and code segment?

An OS that groups similar jobs together for batch execution is a:

In DBMS, which component is responsible for maintaining concurrency control?

Which DBMS component estimates and minimises the cost of query execution?

A semaphore in OS represents:

BFS (Breadth-First Search) uses which data structure?

DFS (Depth-First Search) uses which data structure (or property)?

For an AVL tree with 7 nodes, what is the maximum possible height?

Which array correctly represents a min-heap?

The time complexity of the enqueue operation in a queue implemented with a linked list is:

The average time complexity of sequential (linear) search is:

The basic classification of computer memory is: