This is a test designed to assess your
ability to handle concepts that you will need to successfully complete
Data Communications. If you have trouble successfully completing this
test, you should seriously consider dropping the course until you have
taken and passed CMIS 310 or an equivalent course.
There is no passing or failing grade. You
should, however, be able to successfully complete almost all of the
problems.
After completing the pretest, you should
submit it to your professor via your assignment folder. It is also
attached as an MS Word file.
1. Have you completed CMIS 310 or an
equivalent course? YES
2. Given a 16-to-1 Multiplexer, how many
of the following are required:
a) Inputs __16_____
b) Outputs ___1__
c) Control signals __1____
3. Given the following information:
-
1024 words (1K)
-
16 bits/word
-
8 bits/byte
How many bytes are available? ___128____
4. Convert the following numbers as
indicated
a) 255 decimal into __11111111_binary
b) 171 decimal into
10101011 binary
c) 22 decimal into ___00010110___ binary
d) 11111111 binary into 255 decimal
e) 10100101 binary into 165 decimal
f) 01100001 binary into 97 decimal
g) EC A8 63 hexadecimal into
15509603 binary
5. How many Hz are in
a) 140 KHz = .14 Hz
b) 8 MHz = 0.000008 Hz
c) 5.5 GHz? = 0.0000000055 Hz
6. Convert the following as indicated:
a) 0.008 seconds as 8
milliseconds (1/1k sec)
b) 0.003451 seconds as 345.1
microseconds (1/1 mil sec)
c) 0.0003456 microseconds as 345600 nanoseconds
(1/1 bn sec)