Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
Physical Media
In order to define what is meant by a physical medium let us reflect on the brief life of a bit. Consider a bit travelling from one end system through a series of links and router to another end systems. The source end system first transmits the bit and shortly thereafter the first router in the series receive the bit the first router then transmits the bit and shortly thereafter a second router the bit and so on. Thus the bit when travelling from sources to destination passes through a series of transmitter receiver pairs. For each transmitter receiver pair the bit is sent by propagating electromagnetic waves or optical pulses across a physical medium.
Physical media can be divided in to two categories: Guided and unguided media guided media include twisted pair cable coaxial cable and fiber optic cable. Unguided media is free space. Unguided media, which are those that provide a conduit from one device to another include twisted pair cable coaxial cable and fiber poetic cable. A signal travelling along any of these media is directed and contained by the physical limits of the medium.
Unguided Media Transport electromagnetic waves without using a physical conductor. This type of communication is often referred to as wireless communication. Signals are normally broadcast through free and thus available to anyone who has a device capable of receiving them.
figure classes of transmission media
Q. What do you mean by Modems? Telephone Modems - A telephone line has a bandwidth of approximately 2400 Hz for data transmission
Cost Saving Better performance scalability and viability translates into saving for website operators. Because fewer application web servers are required to meet
Explain how does PPP use LCP for link control?
Latest Internet and Intranet technologies Even though the security capabilities of the latest Internet and Intranet technologies have enabled the companies to control the avail
There are two kinds of characteristics in case of network performance. Delay Throughput
a) Consider that a host is sending a frame of 1200 bytes to another host found 20 Kilometers away. (Assume that switching delay is negligible) i) Calculate the total latency (
What is the difference between TFTP and FTP application layer protocols? The Trivial File Transfer Protocol (TFTP) allows a local host to obtain files from a remote host but d
how to own cipher to encrypt and decrypt message by combine both substitution ans transposition algorithm using c program
Neighbor terminology mean in EIGRP?
To accept its goals, ATM uses fixed, small sized packets known cells. Every cell has 53 octets. VPI/VCI fields shows the cells destination. PRIO say if cell can be discarded CRC
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +91-977-207-8620
Phone: +91-977-207-8620
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd