61. Hardware or software designed to guard against unauthorized access to a computer network is known as a(n)_?

A. Hacker-proof program
B. Firewall
C. Hacker-resistant server
D. Encryption safe wall

62. ____________computer is a medium sized computer?

A. Micro
B. Mainframe
C. Super
D. Mini

63. What type of virus uses computer hosts to reproduce itself?

A. Time bomb
B. Worm
C. Melissa virus
D. Macro virus

64. Cathode Ray Tube is a form of__________?

A. Keyboard
B. Mouse
C. Monitor
D. Mother board

65. In 1999, the Melissa virus was a widely publicised:__?

A. E-mail virus.
B. Macro virus.
C. Trojan horse.
D. Time bomb.

66. ____________computer is small general purpose micro computer, but larger than portable computer?

A. Hybrid
B. Digital
C. Desktop
D. Laptop

67. To prevent the loss of data during power failures, use a(n)_?

A. Encryption program
B. Surge protector
C. Firewall
D. UPS

68. _____________computers operates essentially by counting?

A. Portable computer
B. Hybrid computer
C. Analog computer
D. Digital computer

69. The scrambling of code is known as___________?

A. Encryption
B. A firewall
C. Scrambling
D. Password proofing

70. The first electronic computer was developed by____________?

A. J.V. Attansoff
B. Bill Gates
C. Simur Cray
D. Winton Serf