A(n)________ blocks unauthorized access to a network.
a. firewall
b. modem
c. ONT
d. switch
a. firewall
Computer Science & Information Technology
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QPSK uses four signal states that are ____ degrees out of phase to carry four signal values.
A. 30 B. 60 C. 90 D. 180
Computer Science & Information Technology
Match the following terms to their meanings:
I. Program that intentionally harms your computer A. spyware II. Computer that has malware installed B. virus definition III. Software that collects personal information C. Trojan horse IV. A program that disguises itself as a legitimate program D. malware V. Information needed by the antivirus program to find E. infected and remove a virus
Computer Science & Information Technology
A wall outlet is typically _______ AC volts
Fill in the blank(s) with correct word
Computer Science & Information Technology
SONET is normally associated with which of the following?
A. Point to point B. Point to multipoint C. Ring D. Bus
Computer Science & Information Technology