Q67.
Which of the following is the technology used to encrypt e-mails when sending and receiving them?
a)
b)
c)
d)
Q68.
BASE64
GZIP
PNG
S/MIME
Which of the following an appropriate statement concerning CPU clock frequency?
a) The clock frequency determines the timing of CPU command execution. The higher
the clock frequency, the faster the computer executes commands.
b) The clock frequency determines the speed of LAN communication. The higher the
clock frequency, the faster the speed of LAN communication.
c) The clock frequency determines the rpm at which the magnetic disk spins. The higher
the clock frequency, the higher the rpms and transfer rate of the magnetic disk.
d) The clock frequency is a reference for the computer’s internal clock. When the clock
frequency is doubled, the interrupt interval is reduced by half, and the real-time
processing speed increases.
Q69.
Score
0
10
20
30
40
50
60
70
80
90
100
People
2
4
7
14
9
11
18
14
16
4
1
Average
Median
Mode
a)
b)
53.1
60
60
52.9
40
40
c)
d)
60
40
80
53
45
55
Practice exam 3
Q70.
The results of a spreadsheet software skills test given to 100 people are shown in the table
below. Which of the following is the correct average, median, and mode for the test results?
Which of the following is an appropriate statement concerning an Internet service?
a) FTP is a service for transferring files.
b) Telnet is an information sharing service where people that register for a newsgroup
receive messages from other group members.
c) WWW is a service for exchanging messages.
d) Net news is a service that allows computers to be operated remotely over a network.
388