IT &computer MCQ section 7 MCQ Questions & Answers Detailed Explanation
MOST IMPORTANT general awareness mcq - 7 EXERCISES
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The following question based on IT & computer topic of general awareness mcq
(a) Wide Area Network (WAN)
(b) Remote Communication Network (RCN)
(c) Local Area Network (LAN)
(d) Value Added Network (VAN)
The correct answers to the above question in:
Answer: (c)
A local area network (LAN) is a computer network that interconnects computers in a limited area such as a home, school, computer laboratory, or office building using network media.
The defining characteristics of LANs, in contrast to wide area networks (WANs), include their usually higher data-transfer rates, smaller geographic area, and lack of a need for leased telecommunication lines.
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Read more it and computer Based General Awareness Questions and Answers
Question : 1
What is the process of defining tables called ?
a) Index definition
b) Data definition
c) Data Normalisation
d) Data administration
Answer »Answer: (a)
The process is known as index definition. The order in which columns are listed in the index definition is important. A database index is a data structure that improves the speed of data retrieval operations on a database table at the cost of slower writes and increased storage space. Indices can be created using one or more columns of a database table, providing the basis for both rapid random lookups and efficient access of ordered records.
Question : 2
What is USB ?
a) Universal Serial Bus
b) Ultimate Service Bit
c) Universal Sent-Bit
d) Urgent Sent Bit
Answer »Answer: (a)
Universal Serial Bus (USB) is an industry standard developed in the mid-1990s that defines the cables, connectors and communications protocols used in a bus for connection, communication and power supply between computers and electronic devices. USB was designed to standardize the connection of computer peripherals to personal computers, both to communicate and to supply electric power.
Question : 3
In a computer, what does RAM stand for ?
a) Random Access Memory
b) Ready to Access Memory
c) Read At-a-time Memory
d) Readily Available Memory
Answer »Answer: (a)
Random-access memory (RAM) is a form of computer data storage. A random-access device allows stored data to be accessed in very nearly the same amount of time for any storage location, so data can be accessed quickly in any random order. In contrast, other data storage media read and write data only in a predetermined order.
Question : 4
In networks, a small message used to pass between one station to another is known as
a) Word
b) Token
c) Byte
d) Ring
Answer »Answer: (b)
Token is an efficient form of message passing frequently used in ring networks. It consists of a very short message that circulates around the ring in a logical direction when devices are idle. To transmit, the device must seize the token. Token provides fair access for all stations, and eliminates the collisions of contention-based access methods.
Question : 5
What is the full form of PDA?
a) Personal Digital Addition
b) Personal Digital Assistant
c) Personal Data Addition
d) Peripheral Digital Assistant
Answer »Answer: (b)
The acronym PDA stands for Personal Digital Assistant. Also known as a handheld PC, or personal data assistant, it is a mobile device that functions as a personal information manager.
The term evolved from Personal Desktop Assistant, an application that prompts or prods the user of a computer with suggestions or provides a quick reference to contacts and other lists.
Question : 6
Which of the following statement is true?
a) Foreign keys can’t have null values
b) A Primary key is also a candidate key
c) Each relation has at least one foreign key
d) A Primary key is also an alternate key
Answer »Answer: (b)
Primary Key is a column or a combination of columns that uniquely identify a record. Only one Candidate Key can be Primary Key. For a Candidate Key to qualify as a Primary Key, it should be unique and non-null. So, basically a primary key is just one of the candidate keys, which is a just a minimal super key.
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IT &computer MCQ section 1
IT &computer MCQ section 2
IT &computer MCQ section 3
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IT &computer MCQ section 5
IT &computer MCQ section 6
IT &computer MCQ section 7
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