What is the function of a web crawler in a search engine? MCQ with Answer and Explanation

What is the function of a web crawler in a search engine?
A. To rank search results
B. To manage user queries
C. To discover and retrieve web pages for indexing
D. To display ads
Answer: Option C
Solution (By JKSSB Mock Tests)
A web crawler (spider) systematically browses the web to collect pages for the search engine's index.

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Practice More Internet and Web Technologies Questions

Question #1
Which of the following parameters uniquely distinguishes a 'Deep Web' page from a standard surface web page?
A. It can only be accessed using specialized Tor networks.
B. It is encrypted using military-grade security.
C. It requires high-speed fiber optic connectivity to load.
D. It is not indexed by conventional search engine crawlers.

Correct Answer: Option D


Explanation:
The Deep Web encompasses parts of the internet not indexed by traditional search engines, including password-protected portals and private databases.

This question belongs to: Computer Internet and Web Technologies
Question #2
What mechanism does an automated internet web crawler search engine program read first to identify if a website owner wishes to hide specific directory paths from search index listings?
A. The outgoing SMTP configuration files
B. The local browser history configuration record list
C. The robots.txt file located in the website's root directory
D. The index.html structure script

Correct Answer: Option C


Explanation:
Web crawlers check the robots.txt file at the root of a site first to see if the webmaster has set any rules restricting access to specific directories or pages.

This question belongs to: Computer Internet and Web Technologies
Question #3
What is the primary function of the 'Subject' line field inside a standard electronic mail header pane?
A. To clear out temporary junk sender addresses automatically
B. To host heavy multimedia file attachments safely
C. To provide a short summary description of the email's topic or purpose before the message is opened
D. To list the encrypted server IP routing metrics

Correct Answer: Option C


Explanation:
The Subject header provides descriptive text summarizing the main topic or intent of the email message for the recipient.

This question belongs to: Computer Internet and Web Technologies