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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.
Session layer protocols consists of NFS, SQL, RPC, Appletalk Session Protocol (ASP), XWindows, and NetBEUI.
MULTICASTING : The answer to above problem is multicasting. It is the normal form of broadcasting. It acts like broadcasting however it does not broadcast frames automatically
What are advantages of having e-commerce over extranets
Error Detection-- CRC Powerful error detection system Rather than addition, binary division is utilized A series of redundant bits called "CRC" or else "CRC remai
Can you describe what a FIREWALL is?
MAC address called Physical address Because it's not changeable
ARP - Address Resolution Protocol It is the protocol that traces IP addresses to MAC addresses. RARP - Reverse Address Resolution Protocol It is the protocol within the TC
What are the benefits of using subneting?
Q. What is Two Types of Errors? Single-Bit Errors: Merely one bit in the data unit has changed Burst Errors of length 'n': 2 or more bits in the data unit have changed (
Describe in details about applications of Computer Networks ?
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