Curioustab

Home » Computer Science » Networking

The CCITT Recommendation X.25 specifies three layers of communications:

application, presentation and session
Session, transport and network
physical datalink and network
datalink, network and transport

Correct Answer: physical datalink and network

← Previous Question Next Question→

More Questions from Networking

A group of 2m - 1 routers are interconnected in a centralized binary tree, with router at each tree node. Router I communicate with router J by sending a message to the root of the tree. The root then sends the message back down to J. Then find the mean router-router path length.
Which of the following statements is incorrect?
A 4 KHz noise less channel with one sample ever 125 per sec is used to transmit digital signals. If Delta modulation is selected, then how many bits per second are actually sent?
The main difference between synchronous and asynchronous transmission is
Which of the following technique is used for allocating capacity on a satellite channel using fixed-assignment FDM?
The 802.5 standard implements a way for preventing collisions on the network. How are collisions prevented when using this standard?
Which of the following summation operation is performed on the bits to check an error-detecting code?
The X.25 standard specifies a
Alice is setting up a small network in her home so that she can study for her MCSE exams. She doesn't have a lot of money to spend on hardware, so she wants to use a network topology that requires the least amount of hardware possible. Which topology should she select?
A WATS arrangement

Discussion & Comments

No comments yet. Be the first to comment!

Join Discussion