Download Midterm Review ---------------------------

Midterm Review
----------------------------Number Systems Assignment
1) Convert each binary number to base ten. Show all steps.
a) 101111
b) 10000011
c) 11001111
2) Convert from base ten to binary. Show all steps.
a) 189
b) 22
c) 255
3) Solve the following addition problems:
Given:
Solve:
0
+
0
--------------= 0
1011
+
1001
--------------=
=
0
+
1
--------------1
1111
+
0110
--------------=
=
1
+
1
--------------10
0011
+
1101
--------------=
1
+ 1
1
--------------= 11
1011
+
0011
--------------=
----------------------------Computer Networks:
4) Local Area Networks (LAN) is a wired connection (Computers, printers, and servers) in close
proximity. Examples: same room, office building, campus.
5) Wide Area Networks (WANs) is a wired connection, Computers located at great distances. Examples:
across state or country.
6) A metropolitan area network (MAN) is a wired connection is a computer. Computers located
at a medium distance, larger than (LAN) and smaller than (WAN).
7) Bus topology is basically a wire that all devices connect to. There are terminators on both ends of the
wire.
8) Ring topology is a configuration where the devices are connected to each other in a circular shape.
Each packet is sent around the ring until it reaches its final destination. All data flows in one direction.
All data being transferred over the network must pass through each workstation on the network.
8) Star topology: is a topology in which all nodes are individually connected to a central connection
point, like a hub or a switch.
10) Mesh topology: each network node (workstation or other device) is connected directly to each of
the others.
Midterm Review
11) Name these figures:
--------------------------Flowcharts and algorithms:
Algorithms and Flowcharting Practice1
Algorithms and Flowcharting Practice 2
1) A variable is a location in the computer memory which is given a specific name and can hold a
single value at a time.
2) In general variables can be classified into:
(a)
Numeric type, store numerical data which can be used in mathematical calculations.
(b)
String type, store alphanumeric data, symbols and control characters
(c)
Logical type ‘True’ or a ‘False’
3) Computer Science is the study of Algorithms
4) Algorithm , “an ordered and finite sequence of instructions that is guaranteed to solve a specific
problem.