1. The denition of thrashing is_____.
A. swapping data between virtual memory and RAM too frequently.
B. insufficient hard disk space.
C. too many processors being managed by the operating system.
D. inaccurate information stored in the registry.
E. None of these
2. If you selected text and click at I on the toolbar of MS Word, it makes the text ______.
A. Italics
B. Underlined
C. Italics and under lined
D. Bold
E. None of these
3. What do you understand by the word 'U' in the word URL?
A. Union
B. University
C. Universal
D. Uniform
E. None of these
4. Which of the following types of tables constraints will prevent the entry of duplicate rows?
A. Primary key
B. Unique
C. Null
D. Foreign key
E. None of these
5. Which of the following search engines continuously sends out that starts on a homepage of a server and pursue all links stepwise?
A. Spiders
B. Packets
C. Cookies
D. asPaddle
E. None of these
Answers and Explanations
1. Answer - Option A
Explanation -
In computer science, thrashing occurs when a computer's virtual memory subsystem is in a constant state of paging, rapidly exchanging data in memory for data on disk, to the exclusion of most application-level processing. This causes the performance of the computer to degrade or collapse.
2. Answer - Option A
Explanation -
To make selected text italic, select and highlight the text first. Then hold down Ctrl (the control key) on the keyboard and then press the I on the keyboard, it makes the text Italic.
3. Answer - Option D
Explanation -
A Uniform Resource Locator (URL) is a reference to a web resource that specifies its location on a computer network and a mechanism for retrieving it.
4. Answer - Option A
Explanation -
In the relational model of databases, a primary key is a specific choice of a minimal set of attributes (columns) that uniquely specify a tuple (row) in a relation (table).
5. Answer - Option A
Explanation -
A programme that automatically fetches Web pages. Spiders are used to feed pages to search engines. It’s called a spider because it crawls over the Web another term for these programmes is Web Crawler.