Computer Networks: Transport Layer Performance Metrics

What is the maximum number of segments that can be outstanding during the specified duration?

25 segments (correct)
35 segments
30 segments
20 segments

What is the maximum link utilization as per the given context?

26 segments (correct)
25 segments
28 segments
27 segments

What formula can be used to calculate the window size for a window-based flow control mechanism?

w = 2BD - 1
w = 2BD + 1 (correct)
w = 2BD
w = BD

What is the effect of the Bandwidth Delay Product on the protocol design choice?

It helps in deciding the window size (B) Signup and view all the answers

Considering a link bandwidth of 1Mbps and a delay of 1ms, which protocol would be better for flow control if the segment size is 1 KB?

TCP (A) Signup and view all the answers

What is the primary purpose of the Bandwidth Delay Product (BDP) in flow control?

To determine the optimal segment size for transmission (A) Signup and view all the answers

Given a bandwidth of 50 Kbps and a one-way transit time of 250 msec, what is the Bandwidth Delay Product (BDP) in segments assuming a segment size of 1000 bits?

12.5 segments (A) Signup and view all the answers

What is the round trip time (RTT) for a segment transmission and its corresponding ACK reception?

The RTT is twice the one-way latency (D) Signup and view all the answers

Which layer in the network protocol stack is responsible for end-to-end performance?

Transport Layer (C) Signup and view all the answers

What is the relationship between the Bandwidth Delay Product (BDP) and the segment size?

BDP increases as segment size increases (B) Signup and view all the answers

What is the primary goal of congestion avoidance in a network?

To regulate the sending rate based on what the network can support (D) Signup and view all the answers

Which of the following best describes the concept of Max-Min Fairness?

An allocation is max-min fair if the bandwidth given to one flow cannot be increased without decreasing the bandwidth given to another flow with a lesser allocation (A) Signup and view all the answers

What is the impact of network congestion on goodput and delay?

Network congestion decreases goodput and increases delay (C) Signup and view all the answers

What is the principle behind the Additive Increase Multiplicative Decrease (AIMD) congestion control algorithm?

The sending rate is increased additively and decreased multiplicatively based on network congestion (B) Signup and view all the answers

How does a bad congestion control algorithm affect fairness in a network?

Some flows can get disproportionately smaller share of bandwidth (D) Signup and view all the answers

What is the main challenge in implementing congestion control in a real network?

The dynamic nature of network flows (A) Signup and view all the answers

What is the primary disadvantage of using variable size buffers in the transport layer?

Complicated implementation (C) Signup and view all the answers

Which of the following is not an advantage of sliding window protocols in computer networks?

Less complexity (D) Signup and view all the answers

What is the Bandwidth-Delay Product (BDP) for a link with bandwidth 1 Mbps and delay of 1 ms?

1 Kb (A) Signup and view all the answers

Which of the following is not a function of the Transport Layer?

Addressing (A) Signup and view all the answers

What is the primary advantage of using a single large circular buffer for every connection?

Better memory utilization (D) Signup and view all the answers

What is the primary purpose of the Max Flow Min Cut Theorem?

To find the maximum flow in a network (C) Signup and view all the answers

What is the primary disadvantage of using small buffer sizes in the transport layer?

Added complexity in implementation (C) Signup and view all the answers

What is the primary role of the receiver buffer in the transport layer?

To store data after it is received from the network (C) Signup and view all the answers

What is the main purpose of dynamic buffer management in the transport layer?

To adjust buffer allocations based on the rate difference between the transport entity and the application (D) Signup and view all the answers

What is the primary role of the write() function in the transport layer?

To block the port until the complete data is written in the transport buffer (D) Signup and view all the answers