Waec Data Processing Past Questions and Answers

Question 51:

• WAEC 2016

Acomputer pofessional who studies an existing system with a view to evolving a computer based system from it is

A. System analyst
B. System administrator
C. Computer programmer
D. Computer engineer

Question 52:

• WAEC 2016

Computer virus cannot be transmitted by

A. Downloading files
B. E-mail attachment
C. Pen drives
D. Typing of keyboard

Question 53:

• WAEC 2016

A program designed to detect and prevent malicious programs from a computer system is

A. Spyware
B. Passcode
C. Malware
D. Firewall

Question 54:

• WAEC 2016

In relational model, a tuple is a?

A. A column of table
B. Key of a table
C. Row of a table
D. Two-dimensional table

Question 55:

• WAEC 2016

Relationship between tables in a relational model are created by

A. Foreign keys
B. Determinants
C. Composite keys
D. Candidates keys