BSCS : Network Fundamentals 5

Question 1

What type of cable is required for a direct connection between two computers without a switch (a cross-connect)?

Accepted Answer

Crossover cable

Answer

A crossover cable swaps the transmit and receive pairs, allowing two similar devices (e.g., two PCs) to communicate directly without an intermediary switch.

Question 2

Which protocol is used to test reachability and round-trip time between two IP hosts?

Accepted Answer

ICMP

Answer

ICMP (Internet Control Message Protocol) echo requests and replies are used by the 'ping' utility to test reachability and measure round-trip time.

Question 3

What is the main difference between a collision domain and a broadcast domain?

Accepted Answer

A collision domain is bounded by switches; a broadcast domain is bounded by routers

Answer

Switches break up collision domains (each port is its own), while routers break up broadcast domains — frames do not cross router interfaces.

Question 4

Which IPv4 address block is reserved for link-local (APIPA) addressing when DHCP is unavailable?

Accepted Answer

169.254.0.0/16

Answer

Windows and other OSes assign a 169.254.x.x address from the 169.254.0.0/16 range when no DHCP server responds, enabling limited local communication.

Question 5

Which QoS mechanism places packets into multiple queues based on priority and serves higher-priority queues first?

Accepted Answer

Priority queuing (PQ)

Answer

Priority Queuing assigns packets to one of several priority queues and always drains higher-priority queues before lower-priority ones, minimizing latency for critical traffic.

BSCS - Bachelor of Science in Computer Science Practice Test

BSCS - Bachelor of Science in Computer Science Practice Test

BSCS : Network Fundamentals 5