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Home » Technical » Aptitude Test - 15
Hassan
1.Pick the odd one out?
A. File transfer
B. File download
C. E-mail
D. File transfer
2.Which of the following is an application layer service?
A. Network virtual terminal
B. File transfer, access, and management
C. Mail service
D. Network virtual terminal
3.To deliver a message to the correct application program running on a host, the address must be consulted?
A. IP
B. MAC
C. Port
D. IP
4. Which is a time-sensitive service?
A. File transfer
B. File download
C. E-mail
D. File transfer
5. Transport services available to applications in one or another form?
A. Reliable data transfer
B. Timing
C. Security
D. Reliable data transfer
6.Transport layer aggregates data from different applications into a single stream before passing it to?
A. network layer
B. data link layer
C. application layer
D. network layer
7.The physical layer is concerned with the movement of _______ over the physical medium.
A. programs
B. dialogs
C. protocols
D. programs
8.The _______ is the physical path over which a message travels.
A. Protocol
B. Medium
C. Signal
D. Protocol
9.Before data can be transmitted, they must be transformed to ________?
A. periodic signals
B. electromagnetic signals
C. aperiodic signals
D. periodic signals
10.A periodic signal completes one cycle in 0.001 s. What is the frequency?
A. 1 Hz
B. 100 Hz
C. 1 KHz
D. 1 Hz
11.The physical layer concerns with:
A. bit-by-bit delivery
B. process to process delivery
C. application to application delivery
D. bit-by-bit delivery
12.The physical layer translates logical communication requests from the ______ into hardware specific operations.
A. data link layer
B. network layer
C. trasnport layer
D. data link layer
13.The term ......... describes the position of the waveform relative to time 0.
A. Frequency
B. Phase
C. Phase Shift
D. Frequency
14.In a frequency-domain plot, the horizontal axis measures the ________?
A. peak amplitude
B. frequency
C. phase
D. peak amplitude
15.In a time-domain plot, the horizontal axis is a measure of ________.?
A. signal amplitude
B. frequency
C. phase
D. signal amplitude
16.If the bandwidth of a signal is 5 KHz and the lowest frequency is 52 KHz, what is the highest frequency?
A. 5 KHz
B. 10 KHz
C. 47 KHz
D. 5 KHz
17.What is the bandwidth of a signal that ranges from 1 MHz to 4 MHz?
A. 4 MHz
B. 1 KHz
C. 3 MHz
D. 4 MHz
18.As frequency increases, the period ________.??
A. decreases
B. increases
C. remains the same
D. decreases
19.Given two sine waves A and B, if the frequency of A is twice that of B, then the period of B is ________ that of A.?
A. one-half
B. twice
C. the same as
D. one-half
20.A sine wave is ________.?
A. periodic and continuous
B. aperiodic and continuous
C. periodic and discrete
D. periodic and continuous
21.If the maximum amplitude of a sine wave is 2 V, the minimum amplitude is ________ V.?
A. 2
B. 1
C. -2
D. 2
22.A signal is measured at two different points. The power is P1 at the first point and P2 at the second point. The dB is 0. This means ________.?
A. P2 is zero
B. P2 equals P1
C. P2 is much larger than P1
D. P2 is zero
23.________ is a type of transmission impairment in which the signal loses strength due to the resistance of the transmission medium.?
A. Attenuation
B. Distortion
C. Noise
D. Attenuation
24.________ is a type of transmission impairment in which the signal loses strength due to the different propagation speeds of each frequency that makes up the signal.?
A. Attenuation
B. Distortion
C. Noise
D. Attenuation
25.________ is a type of transmission impairment in which an outside source such as crosstalk corrupts a signal.?
A. Attenuation
B. Distortion
C. Noise
D. Attenuation
26.When propagation speed is multiplied by propagation time, we get the ________.?
A. throughput
B. wavelength of the signal
C. distortion factor
D. throughput
27.Data can be ________.?
A. analog
B. digital
C. (a) or (b)
D. analog
28._______ data have discrete states and take discrete values.?
A. Analog
B. Digital
C. (a) or (b)
D. Analog
29._____ signals can have an infinite number of values in a range.?
A. Analog
B. Digital
C. (a) or (b)
D. Analog
30.Which of the following would be found in a Data Link layer header?
A. The packet’s fragmentation offset
B. The source’s logical address
C. The packet’s sequence number
D. The packet’s fragmentation offset
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