Computer Networks Answers

A table in third normal form is one which:
A. Has only one primary key
B. Is linked to another table by means of a foreign key
C. Have no repeating fields
D. Contains no non-key dependencies

Program-data independence in the context of a DBMS means that changes to:
A The content of data files do not necessitate changes to the program.
B The program does not affect the contents of the files.
C The program does not affect the structure of the data files.
D) The structure of the data files do not affect the program.

The highest data rate is provided by which of the following media?
A Coaxial cable.
B Optical fiber.
C Microwave.
D) Satellites.

A top-to-bottom relationship among the items in a database is established by a:
A Hierarchical schema.
B Network schema.
C Relational schema.
D Object schema.

In a token ring network:
A. Each node has to 'grab' the token at a designated time and send or receive a
message
B. Messages can be passed round the ring in either direction
C. Message tokens can simultaneously be passed around the ring
D. The message is passed to the correct recipient by a central computer

In a token ring network:
A. Each node has to 'grab' the token at a designated time and send or receive a
message
B. Messages can be passed round the ring in either direction
C. Message tokens can simultaneously be passed around the ring
D. The message is passed to the correct recipient by a central computer

A microprocessor has a data bus with 64 lines
and an address bus with 32 lines. The
maximum number of bits that can be stored
in memory is:
A 32 x 2^12.
B 32 x 2^64.
c 64 x 2^32.
D 64 x 2^64.

In register addressing mode operands are
examined in:
A Cache memory.
B Secondary storage.
C The CPU.
D Primary memory.

The decimal equivalent of the binary number
101001.1011 is?
A 41.7875.
B 415875.
c 41.6875.
D 41.1875.

Which of the following sources of interrupt
has the highest priority?
A Division by zero.
B Real-time clock.
C Memory parity error.
D Keyboard key pressed.