Basic CS-Networks [TCS Placement]: Sample Questions 64 - 66 of 133

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Question 64

Networks
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Describe in Detail

Essay▾

What is Round Trip Time?

Explanation

  • Round-trip delay time (RTD) or round-trip time (RTT) is the time taken for signal to be sent plus the time taken for corresponding acknowledgment to be received.
  • This time delay consists of the propagation times between the two points of a signal.
  • It depends on message size, length of link, direction of propagation, propagation velocity, node processing delay, network traffic load etc.
Given the Image is Define the Round Trip Time

Question 65

Networks
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Describe in Detail

Essay▾

What is Mail Gateway?

Explanation

  • Mail gateway handles connections between networks running different communications protocols or communications between different networks that use the same protocol.
  • A mail gateway might connect a TCP/IP network to network running the Systems Network Architecture (SNA) protocol suite.
  • If a mail gateway exists, send mail uses it for sending and receiving mail outside domain.
The Mail Gateway

Question 66

Networks
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Describe in Detail

Essay▾

What is redirector?

Explanation

  • Redirector intercepts file or prints I/O requests and translates them into network requests. under presentation layer.
  • Redirector acts like:
    • A client in a network, which does I/O operation by sending I/O requests to servers and processing the responses from the servers.
    • A server in a network by receiving I/O requests from servers and processing the requests
  • Performs all of the low-level interaction with the server in resolving the file name enabling application to access and manipulate resources on remote servers as on the local machine.
  • Redirectors operate entirely within kernel mode. This provides the following performance advantages over user-mode alternatives
Given the Image is Define the Network Redirector and the TCP/IP OSI Model

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