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State about the international standardization
There are many examples, certainly. Some systems for which there is international standardization include compressed disc players with their discs, such as Walkman tape players and audio cassettes, cameras and their 35mm film, bank cards and automated teller machines. Areas where these international standardization is lacking contain VCRs and videotapes (NTSC VHS in the U.S., SECAM VHS in other countries, PAL VHS in parts of the Europe), portable telephones, light bulbs and lamps (different value of voltages in different countries), appliance plugs and electrical sockets (every country does it differently), photocopiers and paper (such as 8.5 x 11 inches in the U.S., A4 everywhere else in world), nuts and bolts (English versus metric pitch) etc.
Network Layer and Routing As discussed in previous chapters the physical layer provides connection sand services to the data link layer while the data link layer is
Modulation and DeModulation
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Half duplex is analogous to a one a lane bridge, it can handle traffic in both directions but no at the similar time.
What is Applets Little programs that can make the Web pages more aesthetically beautiful by means of animations, text, and graphics moving across the screen.
Q. What is Retransmission timer? Retransmission timer if an ACK is received previous to the timer goes off - destroy the timer if the timer goes off before ACK a
IEEE 8021.d Spanning Tree Protocol (STP) was developed to stop routing loops in a network. If a router, switch, or hub has more than one path to the similar destination, a routing
1. A virtual memory system has a virtual address space of 4 Gigabytes and a page size of 8 Kilobytes. Each page table entry occupies 4 bytes. a) How many bits remain unchanged
Mail Access Protocols The e mail message are usually sent to an email server that stores received message in the recipient e mail mailbox. The user retrieves messa
What are the data units at dissimilar layers of the TCP / IP protocol suite? The data unit formed at the application layer is called a message, at the transport layer the data
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