Information Technology (IT) MCQs - Computer Practice | PakExamPoint
Practise Information Technology (IT) MCQs in Computer. Attempt multiple-choice questions, check answers and revise related subtopics.
Information Technology (IT) MCQs and revision practice
Study Information Technology (IT) through multiple-choice questions in Computer. This subtopic contains 2241 practice questions. Read the wording carefully, compare the options and attempt an answer before checking the solution in learning mode.
Use these Information Technology (IT) MCQs to identify the facts, rules or methods you need to revise. Where an explanation is available, work through it and write down why your chosen option was correct or incorrect. Revisit difficult questions after reviewing your notes, then use exam mode for timed practice.
A. The candidate key that is selected to uniquely identify each occurrence of an entity type
B. The minimal set of attribute that uniquely identifies each occurrence of an entity type
C. Set of one or more attribute that can be used to uniquely identify the records in a table
D. A candidate key that consists of two or more attributes
Check answer and explanation
Answer: A candidate key that consists of two or more attributes
Explanation In database design, a composite key is a candidate key that consists of two or more attributes (table columns) that together uniquely identify an entity occurrence (table row). A compound key is a composite key for which each attribute that makes up the key is a simple (foreign) key in its own right.
Explanation Data acquisition refers to the process of collecting data, not a primary objective of a database. The main objectives of a database include Data Independence, Data Integration, and Data Integrity , which focus on organizing, managing, and ensuring the accuracy of data.
Explanation DVD is an optical disk technology with a 4 to 5 gigabytes storage for videos, audio or other information. DVD stands for Digital Versatile Disk. DVD is an example of Optical Disk. DVD is a storage device.
قریبی ڈیوائس کو جوڑنے کے لیے کون سا آلہ استعمال کیا جاتا ہے؟
A. All of these
B. Bluetooth
C. Wi-Fi
D. NFC
Check answer and explanation
Answer: All of these
Explanation NFC, Wi-Fi, and Bluetooth are all technologies used for connecting nearby devices for data transfer or communication. Each has specific purposes: NFC for very close-range communication. Bluetooth for medium-range. Wi-Fi for larger ranges.
B. Computer hardware or software used by home owners with computers
C. A device that connects computers together
D. Computer hardware or software that can help protect your network by filtering traffic and blocking outsiders from gaining unauthorized access
Check answer and explanation
Answer: Computer hardware or software that can help protect your network by filtering traffic and blocking outsiders from gaining unauthorized access
Explanation A firewall i s a software or firmware that prevents unauthorized acces s to a network. A firewall inspects incoming and outgoing traffi c using a set of rules to identify and block threats.
Explanation A computer virus is: deliberately created A virus can remain dormant in our computer, without showing any sign or symptom. Other Questions Related to "COMPUTER VIRUS" A computer virus is deliberately created *** Computer Virus operates by: Dormancy and Replication *** From where a computer can get a virus? Email and in internet *** Which is the first computer virus in World? Creeper *** First, ever computer virus was created from -------: Pakistan ND11-3-2023
Explanation NThe two major types of computer chips are Primary memory chip and Microprocessor chip. Primary storage, also known as main storage or memory, is the area in a
سی پروگرامنگ میں ، لوپ جو کم از کم ایک بار انجام دیا جاتا ہے (یہاں تک کہ اگر حالت غلط ہے) کو ______ لوپ کہا جاتا ہے۔
A. for
B. while
C. do-while
D. None of these
Check answer and explanation
Answer: do-while
Explanation In a do-while loop , the body executes first, and the condition is checked afterward, ensuring it runs at least once. This differs from for and while loops , which check the condition before executing.
مائیکروسافٹ کے ہائپر وی جیسے ہائپر وائزر میں درج ذیل میں سے کون سی قسم کی ورچوئلائزیشن پائی جاتی ہے؟
A. Full virtualization
B. Para-virtualization
C. None
D. Emulation
Check answer and explanation
Answer: Para-virtualization
Explanation Hyper-V employs para-virtualization , where the guest operating system is aware of the virtualization and can communicate with the hypervisor for optimized performance.
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