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kipiarov [429]
3 years ago
9

Why is accessing a disk block expensive? discuss the time components involved in accessing a disk block. (?

Computers and Technology
1 answer:
Dahasolnce [82]3 years ago
6 0

Answer:

Explanation:

A disk block works by transferring data between the disk and main memory units which are called the blocks, whose size can range drastically from 512 bytes to several thousand.  This data is converted to hardware-level cylinder, surface, and sector number  which makes accessing the data immensely slower than accessing data in the main memory. This time constraint is also the main reason as to why accessing a disk block is so expensive.

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<span>A COOKIE is information that a web server stores on a client computer, such as the client’s preferences when accessing a particular web site, or where the client has been on the web site.</span>
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3 years ago
Which type of interview is conducted in a format where the interviewee is questioned and presented to a panel of individuals?
tester [92]
The <span>type of interview is conducted in a format where the interviewee is questioned and presented to a panel of individuals is called "Panel Interview." The interviewee is surrounded with 2 or more panelists that will ask questions that you need to answer.</span>
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3 years ago
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Software that enables the organization to centralize data is called A. Data Repository B. Data Base Management System C. Data Wa
balandron [24]

Answer:

B. Data Base Management System

Explanation:

A database management system (DBMS) can be defined as a collection of software applications that typically enables computer users to effectively and efficiently create, store, modify, retrieve, centralize and manage data or informations in a database. Generally, it allows computer users to efficiently retrieve and manage their data with an appropriate level of security.

Generally, a database management system (DBMS) acts as an intermediary between the physical data files stored on a computer system and any software application or program.

A data dictionary can be defined as a centralized collection of information on a specific data such as attributes, names, fields and definitions that are being used in a computer database system.

In a data dictionary, data elements are combined into records, which are meaningful combinations of data elements that are included in data flows or retained in data stores.

This ultimately implies that, a data dictionary found in a computer database system typically contains the records about all the data elements (objects) such as data relationships with other elements, ownership, type, size, primary keys etc. This records are stored and communicated to other data when required or needed.

Hence, a software that enables the organization to centralize data, manage the data efficiently while providing authorized users a significant level of access to the stored data, is called a Data Base Management System (DBMS).

4 0
2 years ago
Presentation software allows users to what ?
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I hope this helps! :)
5 0
3 years ago
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Taking these steps will help to improve the delivery of your presentation.
NNADVOKAT [17]

Taking any/all of these steps will help to improve the delivery of your presentation:

<em>==> Be familiar with the place the presentation will be given.</em>

<em>==> Practice your presentation.</em>

<em>==> Move away from your computer frequently while speaking, and return to it to advance slides.</em>

<em>==> Use your conversation words and voice.  Don't read it from a paper (unless you can write in conversational words and phrases, but this is really hard to do).</em>

<em>==> Look around the audience while you're talking.  Make eye-contact with people. </em>

<em>==> Let your hands move normally while you talk.  Smile.</em>

-- Read from your slides so you don't forget your content.   ==> No. This is considered one of the signs of a poor presentation, and an inadequately prepared presenter.  

You're not there to read the slides to your audience.  They can read the slides just as well as you can.  You're there to explain, embellish, enhance, and enlarge the material on the slides.  If you don't have any more to tell them except what's on the slides, then you don't even need to drag yourself or the audience through the agony of the presentation. Just print the slides onto a handout, hand it out, dismiss the audience, and take the rest of the day off.  

Also, you're expected to know your subject well enough so that you don't need to read your slides to know what you're talking about, and to be well enough prepared to remember what comes next.

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2 years ago
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