Here, the check bits stored along with data are 0111 and the check bits calculated at receiver side are 1101. Both check bits are not same is the indication of error bit in data whose position can be calculated by performing the EX-OR operation.

So data bits are:
00011001

Given, CPU speed 10 ⁶ instruction/sec
1 CPU instruction = 4 machine cycles
CPU utilization = 90%
Programmed IO: each byte transfer requires 4 cycles (instructions), in status, check status branch, R/W data in memory maximum data transfer rate,

If we have “n” flip-flops then total number of combinations possible is 2​ ⁿ​ .
So total number of states possible is 2​ ⁿ​ i.e. MOD 2^{​ n}​ .
Here 2​ ⁿ​ = 272
So n = log​ ₂​ 272
n = 9

The query is co-related( same table is used in outer and inner query) so compare each entry of Student table 1 with each entry of Student table 2.

⇒ Consider this table for outer query i.e., LHS query of “>” symbol and here find avg. marks of a department because of group by constraint
i.e., avg. marks for CSE = 87.5
avg. marks for IT = 90


⇒ Consider this table for inner query i.e., RHS query of “>” symbol and here find avg. of total marks
i.e., avg. marks = 88.7
⇓ O/P of given query is

Option(A) is true because 3NF preserves lossless decomposition and functional dependency.
Option(B) is false because BCNF ensures lossless decomposition but do not preserves functional dependency.
Option(C) is true because Any Relation with two attributes is in BCNF
Option(D) is true because BCNF ensure less number of duplicate values in a relation than 3NF.

A relation is in 2NF if there is no partial dependency in a relation. A relation will be in 2NF if the LHS of a functional dependency is either a primary key or a non- key attribute or if all the attributes of a relation are prime attributes.
Option(A) is not correct because Non_key attribute V_name is dependent on V_no which is part of composite key i.e there is a partial dependency exists because of V_no.
Option(B) is also not correct because there are chances of having a partial dependency because Qty_sup could be a prime attribute.
Option(C) and Option(D) are correct because in both the options Key attributes depend upon primary key.

The decomposition of a relation is said to be lossless if and only if there exists a common attribute which is a primary key in any of the two decomposed relations. In this case statement (a) and statement (c) are satisfying this criteria. Hence option (C) is correct.

There is only one principal vanishing point and it is in K-direction.

In analog to digital signal conversion following steps are performed: 1. Sampling: The analog signal is sampled every Ts seconds, where Ts is the sample interval or period. The result is a sequence of samples that retains the shape of the analog signal.
2. Quantization: The sampled signal is quantized. The result of sampling is a series of pulses with amplitude values between the maximum and minimum amplitudes of the signal. The set of amplitudes can be infinite with non-integral values between the two limits.
So quantization is the process of mapping a large set of input values to a smaller(countable) set.
3. Encoding: After each sample is quantized and the number of bits per sample is decided. The quantized values are encoded as streams of bits.

Graphics Kernel System (GKS): ​ GKS provides a set of drawing features for two-dimensional vector graphics suitable for charting and similar duties. The calls are designed to be portable across different programming languages, graphics devices and hardware, so that applications written to use GKS will be readily portable to many platforms and devices.
The five main primitives in GKs are :
● Polyline: ​ which draws a sequence of connected line segments.
● Fill Area: which displays a specified area.
● Cell array: which displays an image composed of a variety of colours or grey scales.
● Polymarker: which marks a sequence of points with the same symbol.
● Text: which draws a string of characters

Flood Gun: An electron gun designed to flood the entire screen with electrons.
Collector: Partly energized by flooding gun stores the charge generated by the writing gun.
Ground: Used to discharge the collector.