Challenge your competence level in computers, computing, algorithms, hardware and software with these Computer science questions and answers.
What type of booting does the computer go through when starting up from a powered down ?
Cold booting
Soft booting
Warm booting
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
The Output will be a HIGH for any case when one or more inputs are one for a(an)
OR gate
AND gate
NOR gate
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
Which of these is not true about peer-to-peer network ?
there is no dedicated servers
it has a strong security system
all computers in this network are known as peers
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
What does R stands for in the CRUD acronym ?
Retrieve
Redirect
Read
Relate
Correct answer is C
In the CRUD acronym, R stands for 'Read'. CRUD stands for Create, Read, Update, and Delete. These are the four basic functions of persistent storage in databases
coordinating unit
Memory unit
Arithmetic Logic unit
Control unit
Correct answer is D
The Control Unit of the Central Processing Unit (CPU) coordinates other units and manages the computer resources. It directs the operation of the processor, and interacts with the other hardware components in the system to carry out the instructions of a program. It is responsible for fetching, decoding, and executing instructions from the memory unit and performing arithmetic and logical operations