Units 10, 11, 12 Revision Quizzizz

How does the BitTorrent protocol facilitate file sharing among peers?

• By storing files on a central server

• By distributing file chunks among peers

• By encrypting files for secure transfer

Answer explanation

The BitTorrent protocol facilitates file sharing among peers by distributing file chunks among peers, allowing for faster and more efficient sharing of large files.

What distinguishes the function of a router in packet switching from circuit switching networks?

• Routers in packet switching networks prioritize voice traffic

• Routers in packet switching networks forward data packets based on destination address

• Routers in circuit switching networks encrypt all transmitted data

Answer explanation

Routers in packet switching networks forward data packets based on destination address

What is a key characteristic of packet switching that allows for more efficient data transmission?

• Sequential data transmission

• Dynamic allocation of network resources

• Fixed communication paths

Answer explanation

Packet switching's dynamic allocation of network resources allows for more efficient data transmission by optimizing the use of available resources based on demand.

How does circuit switching differ from packet switching in terms of network resource utilization?

• Circuit switching statically allocates resources for each call, while packet switching dynamically allocates resources

• Circuit switching dynamically allocates resources for each call, while packet switching statically allocates resources

• Both circuit switching and packet switching allocate resources dynamically

Answer explanation

Circuit switching statically allocates resources for each call, while packet switching dynamically allocates resources

How does the OS handle input/output operations?

• By bypassing the CPU for all I/O operations

• By managing all I/O operations initiated by the user

• By limiting access to I/O devices

Answer explanation

The OS handles input/output operations by managing all I/O operations initiated by the user, ensuring proper communication between the user and the I/O devices.

How does the OS manage memory resources?

• By allowing unlimited memory access to all applications

• By allocating memory to programs and protecting processes from overwriting each other

• By restricting memory access to the OS only

Answer explanation

The OS manages memory resources by allocating memory to programs and protecting processes from overwriting each other.

How does the user interface of an operating system hide hardware complexities from users?

• By displaying detailed hardware specifications

• By simplifying interactions with hardware components

• By requiring users to directly interact with hardware

Answer explanation

The user interface of an operating system hides hardware complexities by simplifying interactions with hardware components, making it easier for users to interact with the system without needing to understand the detailed hardware specifications.

Which protocol provides peer-to-peer file sharing?

• HTTP

• FTP

• BitTorrent

Answer explanation

BitTorrent is the protocol that provides peer-to-peer file sharing, making it the correct choice among the options given.

What is the function of a router in packet switching?

• To convert analog signals to digital signals

• To forward data packets between networks

• To encrypt data for secure transmission

Answer explanation

A router's function in packet switching is to forward data packets between networks, making it the correct choice among the options provided.

What are the main purposes of an operating system?

• To maximize resource usage

• To minimize resource usage

• To provide entertainment to users

Answer explanation

The main purposes of an operating system are to maximize and minimize resource usage, not to provide entertainment to users.