RRB JE IT (CBT II) Mock Test- 3 - Computer Science Engineering (CSE) MCQ

Standard Library Functions for String Length:
- The correct standard library function that returns the length of a string is `strlen()`.
- This function is used in C programming language and is declared in the `` header file.
- The `strlen()` function takes a string as input and returns the number of characters in that string, excluding the null terminator.

Incorrect Options:
- str(): This is not a standard library function for string length. It does not exist in the C standard library.
- len(): This is also not a standard library function for string length in C programming.
- strln(): This is not a valid standard library function for string length. It is not recognized in C.

The default line spacing in Word is 1.15. By default, paragraphs are followed by a blank line and headings have a space above them.

Ctrl +; is used to insert the current date in the workbook.

Formula ‘ = TEXT (CELL, “dddd”)’ is used to get the day's name from the given date.

In DOS, multiple tasks were done one after the other while windows, Linux and Unix are the multitasking and multi-threading operating systems.

For this purpose, the DMA module must use the bus only when the processor does not need it, or it must force the processor to suspend operation temporarily.

+0 → 0000

-0 → 1000

Users can quickly see which cells contain values less than 50% by using ‘Highlight Cell Rules’.

e.g. load a, add b, store c.

When the clock is high, the Output Q follows the input. Hence D flip flop is known as the transparent flip flop.

The truth table of XOR gate is shown :

From the truth table, it is clear that when both the inputs are the same (either (0,0) or (1,1)) the output is zero and when both the inputs are different (either (0,1) or (1,0)), the output is 1.

Customer communication - tasks required to establish effective communication between developer and customer.

Planning - tasks required to define resources, timelines, and other project related information.

Risk analysis - tasks required to assess both technical and management risks.

Engineering - tasks required to build one or more representations of the application.

Construction and release - tasks required to construct, test, install, and provide user support (e.g., documentation and training).

Customer evaluation - tasks required to obtain customer feedback based on evaluation of the software representations created during the engineering stage and implemented during the installation stage.

Verification and validation encompasses a wide array of software quality assurance (SQA) activities that include formal technical reviews, quality and configuration audits, performance monitoring, simulation, feasibility study, documentation review, database review, algorithm analysis, development testing, qualification testing, and installation testing.

Structured analysis is based on an overall plan which is similar to a blueprint for constructing a building, so it is called a predictive approach.

The minimal set of attributes that can uniquely identify a tuple is known as the candidate key.

A relation r1 may include among its attributes the primary key of another relation r2. This attribute is called a foreign key from r1, referencing r2.

The control panel is used to configure and manage almost all aspects of Windows.

• Computer hardware includes the physical parts or components of a computer, such as the central processing unit, monitor, keyboard, computer data storage, graphics card, sound card, speakers, mouse, and motherboard.

• Microsoft Office is a family of client software, server software, and services developed by Microsoft.

For example, typedef int Point; makes the name Point a synonym for int. The type Point can be used in the declaration in exactly the same ways that the type int can be:

Point x, y;

Point *z[];