Past Questions And Answers

8101

The following problems are likely to be caused by insects except

A. loss of leaves of crop plants
B. rottening of cobs in storage
C. transmission of viral diseases
D. reduction of grains in storage to powder

View Discussion (0)WAEC 2005 OBJ

8102

Which of the following concepts is expected to hold when a proprietor makes a drawing of goods or cash from the business?

A) Business entity
B) Realization
C) Going concern
D) Dual-aspect

View Discussion (0)POST UTME UI

8103

WILLIAM SHAKESPEARE: Twelfth Night.

Read the extract below and answer the question

O that I served that lady,

And might not be delivered to the world

Till I had made mine own occasion mellow,

What my estate is!

(Act 1 Sc. 11)

The speaker is addressing

A. a sea captain, friend to Sebastian
B. a sea captain, friend to Viola
C. Sir Toby, uncle to Olivia
D. Malvolio, steward to Olivia

View Discussion (0)WAEC 2001 OBJ

8104

The population of a country will decrease if

A. the death rate exceeds the birth rate
B. immigration is equal to emigration
C. the birth rate exceeds the death rate
D. there is rapid economic growth

View Discussion (0)JAMB 2008

8105

One of the features of a free market economy is that?

A. resources are directed by the price mechanism
B. workers do not earn equal wages
C. the profit motive is serverly constrained
D. descisions on the economy are taken by bureaucratic structures

View Discussion (0)JAMB 1997

8106

(a) What is a register?

(b) List two types of register.

(c) State three functions of registers.

(d) Outline three differences between a register and main memory.

Explanation

(a) A register is a small holding area on the processor chip that works much like random access memory, register holds program counters, data, instructions, and addresses that the arithmetic logic unit is currently processing.

OR

A processor register (CPU register) is one of small set of data holding places that are part of the computer processor

OR

A register may hold an instruction, a storage address or any kind of data (such as a bit sequence or individual characters).

OR

Register is a special high speed storage area within the CPU. AIl data must be represented in the register before it can be processed.

(b) Types of registers:

Memory Address Register

Memory Buffer Register.

Input/Output Register.

Input/Output Buffer Register.

Program Counter. Instruction

Register/Current Instruction Register

Accumulator Register.

Flag Register. Data Register.

Memory data register. Index register.

Stack pointer register (SPR).

Condition code register.

Interrupt control register.

Temporary register.

Permanent register.

(c) Functions of registers:

Holds the address of memory where CPU wants to read or writ data.

Hold the contents of data/instruction read from or written in memory.

Used to specify the address of a particular I / O device.

Used for exchanging data between the l/O module and the processor. Used to store the address of the next instruction to fetch for execution. It stores current instruction being executed or coded. It allows the bits of its content to be moved to left or right (shift register).

It holds the memory addresses of data and instruction during execution phase.

It is used to store the result produced by the system.

It acts as a hardware element which holds a number that can be added to/subtracted from address portion of computer instruction.

It is used to temporarily store data being transmitted to/from peripheral devices.

(d) Differences between Register and Main Memory

Register	Main Memory
Loads/holds the instructions that the CPU needs.	Holds the instructions and data that the currently executing program in the CPU requires.
Holds the small amounts of data Memory of the computer around 32 bits to 64 bits	Memory ranges from gigabytes to terabytes
CPU operates on the register at a faster rate Examples are accumulator, program counter, instruction register, etc.	CPU operates on the memory at a slower rate e.g Random Access Memory
Some registers are located internally to the CPU. There are usually few registers on a processor	Located externally to the CPU There are lot more registers in RAM
Registers in the CPU hold the data is Currently working on the processor	RAM holds program instruction and data that program requires.

View Discussion (0)WAEC 2018 THEORY

8107

The design of the thermostat of an electric iron is based on the

A. emmision of electrons from metals when heated
B. increase in size of metals when heated
C. increase in the density of metals when heated
D. change in the mass of metals when heated

View Discussion (0)WAEC 2008 OBJ

8108

Most agricultural policies do not benefit rural communities because

A. they aim at benefiting the national economy
B. of poor implementation
C. of lack of forigen exchange to import the required expertise
D. they are formulated by non-practising farmers

View Discussion (0)WAEC 2002 OBJ

8109

This question is based on A GOVERNMENT DRIVER ON HIS RETIREMENT.

Many years on wheels The reference to wheels exemplifies the use of ___ in the poem.

A. climax
B. personification
C. metonymy
D. synecdoche

View Discussion (0)JAMB 2023

8110

Which of the following is involved in secondary thickening in plants?

A. Collenchyma and xylem cells
B. Vascular cambium
C. Cork cambium and sclerenchyma
D. Vascular cambium and cork cambium

View Discussion (0)JAMB 2012

Correct Answer: B. rottening of cobs in storage

Correct Answer: A) Business entity

Correct Answer: B. a sea captain, friend to Viola

Correct Answer: A. the death rate exceeds the birth rate

Explanation

Correct Answer: A. resources are directed by the price mechanism

Explanation

Correct Answer: B. increase in size of metals when heated

Correct Answer: D. they are formulated by non-practising farmers

Correct Answer: C. metonymy

Explanation

Correct Answer: D. Vascular cambium and cork cambium