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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.
Explain in dteail about the intranet The first Web browser was called Mosaic, and the HTML concept, although not a new one, has accelerated data access and research. In short,
distortion
Router#
ACK Received If an ACK is received by the sender. The SR sender marks that packet as having been received by the receiver.
Explain Persistence timer? To deal with the zero-size windows What if a receiver advertises that the window size is 0 (by sending ACK) and this ACK is lost? - A
Authoritative DNS Servers Every organization with publicly accessible hosts ( such as web server and mail several on the internet must provide publicly accessible D
Recognize the two commands that copies the configuration in NVRAM to RAM Ans) a) Copy startup-config running-config b) Configure memory
Describe Concept of Simplex, Half Duplex and Full Duplex dialogs?
What is the Network Layer of the OSI responsible for? Ans) The Network Layer routes data from single node to another sends data from the source network to the destination networ
A mobile host (MH) is connected to a WLAN access network that uses MIP for mobility support. Consider that the RTTs between MH and HA are 0.3s while RTTs within a L2 subnet are 80
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