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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.
Wireless Phone Company (WLPC) is a provider of wireless phone service in the US with 100,000 customers serving mostly small markets. WLPC has just purchased additional airwaves in
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Q. Define Unicast - Multicast and Reserved Addresses? Unicast, Multicast, and Reserved Addresses Unicast address - identifies a specific device Multicast address
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Consider figure. Assume a new flow E is added that takes a path from R1 to R2 to R6. How does the max-min bandwidth allocation change for the 5 flows?
Persistent and No persistent Connections HTTP can use both persistent and non persistent connection. By defaults uses persistent connections. Persistent Connections
Connection to backbone LAN In most cases, interconnection with stations on a wired backbone LAN is needed. For infrastructure wireless LANs, this is simply accomplished by the
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