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Cards In This Set
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What is a web service?
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An object callable across a network.
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What kind of approach does a web service use?
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Platform-neutral approach because:1) Data is passed back and forth as XML2) Protocols based on SOAP and HTTP3) Calls routed through web server
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Example of a web service code
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Obj = new WebService();result = obj.add(20, 99);2099
Int Add(int x, int y){return x + y;} 119 |
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What is a protocol?
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A procedure. Tells what to do next.
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How do you call web services?
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Proxy objects, SOAP, XML, HTTP, and .ASMX pages
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Why might web services change software development?
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1) Works on any platform: Mac OS X, Windows, Linux2) Works with most programming languages: Java, C++, VB, C#3) Works with old, legacy hardware: New systems can interact with old.
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What are the strengths of handheld PC's?
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Note: Known as "clamshell computers."1) Instant on/off capability2) They have a long battery
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What are the strengths and weaknesses of Tablet PC's?
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Strength - They have similar power and storage capacities to laptops and attractive features. Weakness - Reincarnation of the Tablet PC -> business needs to justify the additional cost and support
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How many segments can wireless networks be divided into and what are they?
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Two. Short-range and Long-range.
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What are short-range networks?
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They pertain to networks that are confined to a limited area.
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What are long-range networks?
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They continue to where LANs end.
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What is the goal of long-range networks?
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To provide wireless globally.
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What are the different categories of Wireless Networks?
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1) PAN - personal area network2) MAN - metropolitan area network3) WAN - wide area network4) LAN - local area network
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What are the specifications of Bluetooth? What IEEE Standard and what type of wireless network does it use?
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802.15 - short range, low power, low cost, and small networks. Communication occurs within a PAN (Personal Area Network).
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What is the IEEE standard of WLAN? Name some characteristics of the specification.
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IEEE 802.11b - lowest cost, signal range is best and is not easily obstructed, slowest maximum speed, supports fewer simultaneous users, appliances may interfere on the unregulated frequency band
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