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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.
As a system administrator, you require to set up single Ethernet interface on the Cisco router to permit for both sap and Novell-ether encapsulations. Which set of commands will ac
a) Assume that the time required to transmit one packet (i.e. the packet length divided by link data rate) is 10ms and the Round Trip Time (from Source to Destination and back) is
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Q. Multimode for transmitting optical signals? - Multiple beams from light source travel through core at different paths - Multimode step-index fiber Density remains
Q. Explain the diffrent types of Security Attacks? Types of Security Attacks Passive Threats: - Traffic Analysis and - Release of Message Contents Active
Explain in brief about the Throughput The medium access control protocol should make as well-organized use as possible of the wireless medium to maximize capacity. Number of
Q. Illustrate the Drawbacks of stop and wait? Drawbacks of stop and wait - Only one frame is able to be in transit at a time - After every frame sent the host must wai
"SAP" is used by the Cisco IOS for which encapsulation types? Ans) Three types:- Ethernet_802.2 Token-Ring FDDI_802.2
Categories of traditional Ethernet a) Baseband - digital signals using Manchester encoding b) 10Base2, 10-Base-T, 10Base5, 10Base-FL c) First number signifies data rate
Q. Which steps are used at receiver end by check sum? The receiver follows these steps: The unit is divided into "k" sections each of "n" bits All sections are
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