The symbol that separates different parts of an e-mail address is:
Check AnswerExplanation
The “at” symbol (@) is the standard separator used in every email address to divide the user’s unique identifier from the domain name. The normal separator in all emails is the at sign or symbol (i.e. the symbol of at) that is used in all email addresses to separate the individual user identifier with the domain name.
Hash #: Tends to be used as the tags on social media or as a numerical mark.
Caret ^: -1 In mathematics, it is a notation that refers to exponents, or in computer programming.
Dollar $: can be used as a currency symbol or to represent variables in a particular coding language.
What is an ‘Operating system’?
- (A) Application software
- (B) System software
- (C) Integrated software
- (D) Output software
Check AnswerExplanation
A computer is an operating system (OS) a basic piece of software that controls the hardware of a computer, and serves as a general host to applications. Also, in contrast to application software (which accomplishes a definite task to the user, such as Word Processing or browsing), system software is the one that runs in the background to make sure the computer works properly.
Hardware Management: It manages the CPU, the memory, and the storage.
Resource Allocation: It determines what programs can use what resources and which duration.
User Interface: It will give you the interface (such as a desktop or command line) with which you will interrelate with the machine.
Platform for Apps: It includes the context on which to execute an “Application Software” (such as Spotify or Excel) can be executed.
The Operating System may be thought of as the manager of the computer. None of your hardware would work without it because your hardware would be merely a pile of components which have no idea how to communicate with themselves or with you.
One kilo byte (KB) is around:
- (A) 1000 bytes
- (B) 1024 bytes
- (C) 1100 bytes
- (D) 1124 bytes
Check AnswerExplanation
One kilo byte (KB) is around 1024 bytes. Although the prefix kilo (decimal system) means 1,000 in metrics, in computing which uses a binary (base-2) system, a kilobyte is defined as bytes, which equals 1024 bytes.
1 KB = 1024 Bytes
1 MB = 1024 KB
1 GB = 1024 MB
Quick Info: Though there are also manufacturers that prefer to count a kilobyte using 1000 bytes (or a kibibyte (KiB) of 1024 bytes to be precise), in standard computing usage and on exams, 1024 bytes is the correct response.
In Microsoft Word 2016, to extend a selection to one line up, which keys should you press?
- (A) Shift + Up Arrow
- (B) Shift + Down arrow
- (C) Shift + Left/Right Arrow
- (D) Alt + Shift + Up Arrow
Check AnswerExplanation
In Microsoft word 2016 you need to press Shift + Up Arrow in order to extend a selection to one line up. The selection is extended in that direction by holding the Shift key when an arrow key is pressed.
Shift + Up Arrow: Selects one line upwards.
Shift + Down arrow: Expands selection a line downwards.
Shift + Left/Right Arrow: Expands the selection to either the left or the right by one character.
Alt + Shift + Up Arrow is to be used to move paragraphs, but not to increase selections.
What is the unit of data consisting of one or more characters called?
- (A) Record
- (B) Field
- (C) File
- (D) Character
Check AnswerExplanation
According to the data hierarchy of computer science, a unit of data comprising of one or more characters (e.g. a name, an ID number or a date) is a Field.
Field: The unit of data that a user is accustomed to access and operate on; it is a combination of one or more associated characters or bytes.
Character: A single letter, number or symbol (a byte).
Record: A group of fields (e.g. all the information of one student).
File: A concatenation of associated records.
The speed of the internet is measured in ______.
- (A) Gigabytes per second
- (B) Gigahertz per second
- (C) Megabits per second
- (D) Terabits per second
Check AnswerExplanationMegabits per second (Mbps): It is the standard unit of measure of internet speed. It is the speed of transfer of data on a connection. One billion bits of information make one megabit. Connection speed can also be expressed in Gbps (Gigabits per second).
How frequently should a user perform an incremental backup?
- (A) Daily
- (B) Weekly
- (C) Monthly
- (D) Yearly
Check AnswerExplanationThe frequency at which one should do an incremental backup is normally on a daily basis since it only includes the data that has changed since the last backup which will help reduce the data loss as well as save time and storage as opposed to full backups.
What is the maximum number of rows in a worksheet of Microsoft Excel 2016?
- (A) 16,384
- (B) 17,384
- (C) 1,048,576
- (D) 19,384
Check AnswerExplanationIn the case of Microsoft Excel 2016 the largest amount of rows per worksheet is 1,048,576 which corresponds to option (C). This is one of the limits of the modern structure of Excel (since Excel 2007), enabling users to work with very large databases productively. The alternative solutions are wrong such as the case of 16,384, which is the number of columns (the columns A to XFD) not the number of rows.
‘BIOS’ stands for:
- (A) Binary Input / Output System
- (B) Basic Input / Output Software
- (C) Boolean Input / Outdated System
- (D) Basic Input / Output System
Check Answer
- (D) Basic Input / Output System
Explanation‘BIOS’ stands for Basic Input / Output System. It is essential firmware in a computer that prepares hardware components and begins the booting process when the system is turned on. The other options are wrong because they do not represent the standard and widely accepted full form of BIOS.
In Microsoft Windows, the ‘F1’ key is mostly used for:
- (A) Exit
- (B) Refresh
- (C) Help
- (D) Restart
Check AnswerExplanationIn Microsoft Windows, the ‘F1’ key is mainly used to open the Help screen or menu for the active application. It serves as a shortcut for documentation and support resources across Windows, web browsers, and Microsoft Office programs.
