ISP and Data Packets Part 2

Which switching method establishes a dedicated path between sender and receiver before data transmission?

• Packet Switching

• Circuit Switching

• Message Switching

• Datagram Switching

Answer explanation

b) To divide data into smaller, manageable units for transmission: Packet segmentation improves efficiency and reliability.

In packet switching, what is the purpose of packet segmentation?

• To increase data transmission speed by avoiding dedicated paths.

• To divide data into smaller, manageable units for transmission.

• To encrypt data for security purposes.

• To compress data for efficient storage.

Answer explanation

To divide data into smaller, manageable units for transmission: Packet segmentation improves efficiency and reliability.

Compared to circuit switching, packet switching generally offers:

• Higher bandwidth efficiency and lower latency.

• Lower bandwidth efficiency and higher latency.

• Higher bandwidth efficiency and higher latency.

• Lower bandwidth efficiency and lower latency.

Answer explanation

Higher bandwidth efficiency and higher latency: Packet switching shares bandwidth but can introduce variable delays.

What is a potential drawback of circuit switching in a network with bursty traffic?

• Inefficient use of bandwidth during idle periods.

• Increased risk of packet loss due to congestion.

• Higher security risks due to shared channels.

• Complexity in handling dynamic routing.

Answer explanation

Inefficient use of bandwidth during idle periods: Circuit switching reserves bandwidth even when not actively used.

You need to simulate a network with multiple routers and hosts to analyze packet flow. Which tool would be most suitable?

• Microsoft Word

• Adobe Photoshop

• Packet Tracer

• Excel

Answer explanation

Packet Tracer: Packet Tracer is designed for network simulation.

Circuit switched networks are more robust against single point of failure network outages than packet switched networks.

• True

• False

Answer explanation

False: a single point of failure in a circuit switched network can take down the entire connection, while packet switched networks can reroute.

In packet tracer, the simulation mode is useful for viewing real time packet movement.

• True

• False

Answer explanation

True: the simulation mode is designed for this.

Congestion in a packet switched network can cause packets to be dropped.

• True

• False

Answer explanation

True: Congestion causes packet drops.

Packet switching breaks down data into packets at the sending end, and reassembles them at the receiving end.

• True

• False

Answer explanation

True: this is the core function of packet switching.

You can directly modify the physical hardware within Packet Tracer.

• True

• False

Answer explanation

False: Packet Tracer is a simulation tool, not physical hardware.