101.
Which operation performs a set union of two ‘similarly structured’ tables?
Answer: Option 'A'
Union operation performs a set union of two ‘similarly structured’ tables.
102.
Which of the following statements is not true about cache memory?
Answer: Option 'A'
Cache memory is a form of Random Access Memory (RAM) that is directly associated with the microprocessor.
103.
What does JAR stand for?
Answer: Option 'C'
In software, JAR (Java Archive) is a package file format typically used to aggregate many Java class files and associated metadata and resources (text, images, etc.) into one file to distribute application software or libraries on the Java platform.
104.
Which among the following is a property of the entire relation, rather than of the individual tuples in which each tuple is unique?
Answer: Option 'B'
Key is a property of the entire relation (relation is a table).
105.
What acts as master software that works as a mediator between a computer user and hardware of a computer?
Answer: Option 'D'
Operating system provides an interface between a user and computer hardware. It enables a user to utilize hardware resources efficiently.
106.
Which of the following is file extension for MS Word documents?
Answer: Option 'B'
'.doc' is a file extension for Word file.
107.
In relational database, a field is a:
Answer: Option 'D'
A field is category of information.
108.
Which of the following shortcut keys is used to select the entire document?
Answer: Option 'C'
We can select the entire document by using the Ctrl + A keys together.
109.
Which of the following is contained at the end of the file name and helps to determine the type of file?
Answer: Option 'C'
A filename extension is an identifier specified as a suffix to the name of a computer file