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What is IT ?
Information technology is the use of computers and software to manage information.
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The act of one company contracting with another company to provide services
OUTSOURCE
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Best Practices to reduce TCO
- 3 key areas to focus on:
- People – ensure skills and training are up to speed
- Procedures – disciplined procedures must be followed
- Technology – innovation can lower costs and deliver RAS
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ROI – return on investment
A measurement used to evaluate the efficiency of an investment over time
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Consolidation
- the process of combining resources to
- gain measures of efficiency
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Virtualization
method of creating and running multiple virtual independent operating environments on a single physical device
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CLOUD COMPUTING
- delivery of computing as a service rather than a product, whereby shared
- resources, software and information are provided to computers or other
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What is a Computer?
§The heart of all IT environments is the computer
§A computer is an electronic device that performs various tasks guided by software instructions
§It can process data through input devices and generate output through a number of different devices.
§Computers range in size, type, shape and ability.
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Server
a computer that performs a set of tasks on behalf of the ‘clients’ attached to it.
- Can perform ALL functions on behalf of the client
- §Communications
- §Run Applications
- §Shares resources (printers)
- §Data repository
- §Security
- §Administration
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Client
device (workstation) that attaches and depends on the server to provide certain functions
- §Provide the user access to computer functions
- §Acts as an input and output device to applications
- §Attaches to the server through a network for minimal tasks
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applet
a JAVA program that runs within the web browser
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ASCII (pronounced ask-key ) - American Standard Code for Information Interchange.
a commonly used data format for exchanging information between computers or programs.
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Bus
an electronic pathway through which data is transmitted between components in a computer.
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Chooser
A desk accessory used to select a printer, or other external device, or to log onto a network.
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Clipboard
- A portion of memory where the computer temporarily stores information. Called a Copy Buffer
- in many PC applications because it is used to hold information which is
- to be moved, as in word processing where text is "cut" and then
- "pasted".
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Clock Rate (MHz)
The instruction processing speed of a computer measured in millions of cycles per sec (i.e., 200 MHz).
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daisy chaining
the act of stringing devices together in a series (such as SCSI).
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head crash
a hard disk crash caused by the heads coming in contact with the spinning disk(s)
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Which is the best response to describe why
customers consolidate?
To simplify their infrastructure
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What type of hard drive technology is power efficient, runs cooler and takes up less space?
Solid State or Flash Drives
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2 reasons why customers would choose to
outsource their IT.
- It's not their core business.
- Financially better for them.
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The fundamental responsibility of an IT
department is?
- Manage information through the use of computers
- and other technology
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A customer call with an executive should be focused on which?
- Understand the customer's real requirements
- TCO and ROI numbers
- A Business discussion rather than a technical discussion
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What statement is false?
TCA is the same as ROI
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Which of the following provides the mediation
between hardware and the applications?
The Operating System
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2 statements about Networking that are FALSE?
- You can share only printing resources
- All data must still be maintained at the workstation
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What factors would you consider when discussing GREEN with a customer?
- Reduced power consumption
- Disposal of assets
- Operating procedures and efficiency
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True or False: A workstation cannot act as a server – it must be a specifically designed machine.
FALSE
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DRAM (dynamic random-access memory)
- Allows greater densities
- Memory must be ‘charged’ in order to maintain contents (hence dynamic)
- Makes DRAM volatile if power is lost
- Early generation memory, not used today
- Used 168-240pin connector capable of 64-bit transfers
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SDRAM (synchronous dynamic access memory)
Is memory synchronized with the system
Allows greater speed but also more complex than DRAM
Started out at 66MHz only but now capable of 133MHz and higher
- Most prevalent in PC’s, Laptops and game consoles
- 2 flavours of SDRAM
Buffered – has additional buffer space on motherboard before hitting the DIMM
- mostly used on servers, not on PCs because of cost
- Unbuffered – as it states, no buffer area
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