Information Technologies Midterm Practice 2 (ch 5, 4 & 7)

which research practice will help ensure that highly reliable;e information is obtained?

assess the sites authoritativeness question the information never rely on a single source

what search technique will help avoid over constraining?

begin with an inclusive search and add more words one at a time.

identify a method used to find authoritative information

choose information from respected organizations

a search engine consists partly of a

crawler and a query processor

the 5 levels of styling information starting from the "farthest away" are

default, external, global, range, site

the NATO broadcast alphabet

encodes letters as words

a letter with an accent mark is displayed using the

escape symbol

if quotes surround the search phrase, "human powered flight", the search would find pages associated with the

exact phrase human powered flight

a search engine using the logical operator OR requires

one of the words to be found on the page

which of following would be used to display an ampersand on a webpage?

&

how many digits are in the hexadecimal system?

16

how many bits does each hex digit require?

4

the Hawaiian alphabet has 18 symbols. How many bits are needed to represent just these symbols?

5

the binary number for 101 represents the decimal number is

5

the XHTML tag for bold text is

<b></b>

the preferred way to specify a break that continues the text on the next line in a web page is

<br />

which of the following will display the rocket.jpg file on the page of the image is stored in the same folder as the page

<img src= "rocket.jpg" alt= "Rocket"/>

the tags used to specify table headings/columns headings are

<th> and </th>

what does ASCII stand for?

American standard code for information interchange

a good analogy of the memory in the computer is

a sidewalk with a single rock present or absent in each square.

one example of descriptive text is anchor text, which is

highlighted link text, specified inside <a...> tags, describing the page to which it links

in a web search, a match to a query is known as a(n)

hit

the PandA system

is binary

what is an effective technique in using the hit list?

skim top-level information and decide which links to explore further.

a weakness of Wikipedia is that

the content is not validated by experts

the title that appears on the title bar of the browser is specified using

title tags

the digital versatile disc (DVD)

uses bumps to encode the information

extended ASCII code:

was adopted by IBM as the standard for character representation, was developed in the US, is known as ISO-8859-1.

computer experts call spaces that have been inserted for readability

white space