A program that neither replicates or copies itself, but does damage or compromises the security of the computer. Which ‘Computer Virus’ it is?

A. Joke Program
B. Worm
C. Trojan
D. Hoax
✅ The correct answer is option C.
Typically it relies on someone emailing it to you, it does not email itself, it may arrive in the form of a joke program or software of some sort.

Which is the best search tool for finding Web sites that have been handpicked and recommended by someone else?

A. Subject directories
B. Search engines
C. Meta-search engines
D. Discussion groups
✅ The correct answer is option A.
Subject directories tend to house fewer�sometimes more relevant�sites than those found through search engines. Sites in a subject directory often have been handpicked by editorial teams or specialists in a particular field.

What are the three main search expressions, or operators, recognized by Boolean logic?

A. FROM, TO, WHOM
B. AND, OR, NOT
C. SEARCH, KEYWORD, TEXT
D. AND, OR, BUT
✅ The correct answer is option B.
The three most commonly used Boolean operators are: AND, OR, and NOT. On the Web, Boolean operators are used in advanced searches to combine search items. For example, an “AND” operator between two words (“football AND television”) tells the search engine to find documents that contain both of these words.