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Question:
(a) Short Message Service (SMS) is a service available on most mobile phones that allows the sending of short messages between mobile phones, other handheld devices and even landline telephones.
Briefly describe why an SMS is limited to 160 characters.
(b) Multimedia Messaging Service (MMS) is a standard for a telephony messaging systems that allow sending messages that includes multimedia objects (images, video, audio, rich text) and not just text messages as in Short message service.
Briefly explain the two modes of delivery in MMS.
(c) Prepare the basic steps that should be taken to secure a WiFi network.
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What is horizontal and vertical parity A single error can cause both horizontal and vertical parity checks to be wrong. Two errors can also be easily detected. If they are not
Control Frame: solicit_successor Periodically ask for any station to link by sending solicit_successor Token with sender's addr and successor's addr wait 2 (as in
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
Q. What do you understand by OSI? Ans: The Open System Interconnection (OSI) reference model illustrates how information from a software application in one computer goes throug
To model a WAN, we need a graph in which the nodes model switches and the edges model direct join between switches. The modeling saves essence of network, and it ignores attached d
What is a LAN? LAN stands for Local Area Network. It refers to the connection among computers and other network devices that are located within a small physical location.
what is similarity of wifi and 3g
Introduction To Parallel Programming After getting an enormous breakthrough in the serial programming and figuring out its limitations, academicians and computer professionals
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