JAMB Computer Science Past Questions & Answers - Page 12

56.

Which of these is not true about peer-to-peer network ?

A.

there is no dedicated servers

B.

it has a strong security system

C.

all computers in this network are known as peers

D.

there is no hierarchy among the computers

Correct answer is B

A peer-to-peer (P2P) network is a decentralized network where each computer (peer) acts as both a client and a server. This means that there are no dedicated servers and no hierarchy among the computers. However, P2P networks are generally not known for having a strong security system. This is because each peer has equal access to the resources, which can lead to potential security risks

57.

What type of booting does the computer go through when starting up from a powered down ?

A.

Cold booting

B.

Soft booting

C.

Warm booting

D.

Rebooting

Correct answer is A

Cold booting is when you start a computer from a powered-down, or off, state. This is often referred to as a system restart or a system reset. Warm booting, on the other hand, is restarting the computer while it's powered on. Rebooting and soft booting are general terms for restarting a computer and can refer to either cold or warm booting

58.

What type of booting does the computer go through when starting up from a powered down ?

A.

Cold booting

B.

Soft booting

C.

Warm booting

D.

Rebooting

Correct answer is A

Cold booting is when you start a computer from a powered-down, or off, state. This is often referred to as a system restart or a system reset. Warm booting, on the other hand, is restarting the computer while it's powered on. Rebooting and soft booting are general terms for restarting a computer and can refer to either cold or warm booting

59.

The Output will be a HIGH for any case when one or more inputs are one for a(an)

A.

OR gate

B.

AND gate

C.

NOR gate

D.

NOT gate

Correct answer is A

An OR gate is a digital logic gate that implements logical disjunction - it behaves according to the truth table to the right. A HIGH output (1) results if one or more of the inputs to the gate is HIGH (1). If neither input is high, a LOW output (0) results. In another sense, the function of OR effectively finds the maximum between two binary digits, just as the complementary AND function finds the minimum

60.

Which of these is not true about peer-to-peer network ?

A.

there is no dedicated servers

B.

it has a strong security system

C.

all computers in this network are known as peers

D.

there is no hierarchy among the computers

Correct answer is B

A peer-to-peer (P2P) network is a decentralized network where each computer (peer) acts as both a client and a server. This means that there are no dedicated servers and no hierarchy among the computers. However, P2P networks are generally not known for having a strong security system. This is because each peer has equal access to the resources, which can lead to potential security risks