A level north west regional mock gce 2022 computer science 1
A level north west regional mock gce 2022 computer science 1
The location of a resource on the internet Is given by its
A. Protocol
B. URL
C. Website
1). Browser
2– What is the number of swaps required to sort n elements
using selection sort, in the worst cast/?
A. O(n)
B. 0(n log n)
C. 0(n2)
I). Ofn logn) „
^ Software files and give programs them away that allow at no cost youare to called legally copy
A. Freeware
B. Open source
C. Share wate
D. Public domain
l{ The device which changes from serial transmission
to parallel transmission of data.
A. Counter
B. Multiplexer
C. Demultiplexer
D. Modem
13. Which of the following statements is/are true?
I. Shortest remaining time first scheduling rnay
cause starvation
Jl, Pre–emptive scheduling can cause starvation
III. Round robin is better than FCFS in terms of
response time
A. I Only t
B. I and III only
C. II and III only
P. I, II and III
14. A database table is in 2nd Normal form if it is in 1st
normal form and
A. All non–key fields depend on a unique key
B. All non–key fields depend on all key fields
C. Most non–key fields depend on unique key
D. Most non–key fields depend on all key fields
15. Given the basic ER and relational models, which of the
following is INCORRECT?
A. An attribute of an entity can have more than one
value
B. An attribute of an Entity can be composite
C. In a row of a relational table, a primary key
uniquely identify each record.
D. In a row of a relational table, an attribute can
have exactly one value or a NULL value
16. CPU generally handles an interrupt by executing
interrupt service routine
A. As soon as an interrupt flag is raised.
B. By checking the interrupt register at the end of
the fetch cycle
C. By checking the interrupt register after finishing
the execution of the current instruction
D. As soon as the computer stop working
17. How many Cables segments will Mr. Jason need to
connect ten(10) computers in a full mesh topology
B. 55
C. 45
D. 40
