1. What are the main components of a computer system? [1 Mark]
-Hardware -Software
-Data -Communications
2. Provide some advantages of client-server architecture. [1 Mark]
-Centralization of services permits
-easier administration of services by IT professionals
-easier availability and location by users
-consistency of resources, such as files and data, can be managed and assured
-more efficient and cost-effective hardware procurement through purchasing a small number of very powerful computers
3. Using 4 bits perform the addition of 210and -510by 2’s complement method. [1 Mark]
2+(-5)
〖(2)〗_10 → 〖(0010)〗_2
〖(5)〗_10 → 〖(0101)〗_2 , 〖(-5)〗_10 → 〖(1011)〗_2
0010
+1011
1101
〖(1101)〗_2 = 〖(-3)〗_10
4. Show how 12.25 is represented in SEEMMMMM format. [1 Mark]
1. Add exponent 12.25×〖10〗^0
2. Position decimal point .1225×〖10〗^2
3. Already normalized
4. Add 0 to be 5 digits .12250×〖10〗^2
5. Convert number 05212250
S = 0 Sign
EE= 52 Excess-50 exponent
MMMMM= 12250 Mantissa