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Blown to Bits ., questions and answers verified 2024
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Blown to Bits ., questions and answers verified 2024
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Blown to Bits: Ch 4Search - correct answer ✔Web has gotten so big and so unstructured that it
is not
humanly possible to split it up into neat categories. Web pages simply don't
lend themselves to organization in a nice structure, like an outline. There is no
master plan for the Web, vast numbers of new pages are added daily in
an utterly unstructured way. Search makes it possible to find things in vast
digital repositories. But search is more
than a quick form of look-up in a digital library. Search is a new form of control
over information
Uniform Resource Locator (URL) - correct answer ✔A Uniform Resource
Locator (URL) is a specific type of uniform resource identifier (URI) although
many people use the two terms interchangeably. A URL implies the means to
access an indicated resource, which is not true of every URI. URLs occur
most commonly to reference web pages (http), but are also used for file
transfer (ftp), email (mailto), database access (JDBC), and many other
applications. Most web browsers display the URL of a web page above the
page in an address bar. A typical URL has the form
http://www.example.com/index.html, which indicates the protocol type (http),
the domain name, (www.example.com), and the specific web page
(index.html).
Uniform Resource Identifier (URI) - correct answer ✔A uniform resource
identifier (URI) is a string of characters used to identify a name of a resource.
Such identification enables interaction with representations of the resource
over a network, typically the World Wide Web, using specific protocols.
Schemes specifying a concrete syntax and associated protocols define each
URI. The most common form of URI is the uniform resource locator (URL),
frequently referred to informally as a web address.
, Organizing Hierarchy - correct answer ✔If the categories are clear, it may be
possible to use the
organizing hierarchy to l0cate what you are looking for. That requires that the
person doing the searching not only know the classification system, but be
skilled at making all the necessary decisions. For example, if knowledge about
living things was organized as Aristotle had it, anyone wanting to know about
whales would have to know already whether a whale was a fish or a mammal
in order to go down the proper branch of the classification tree. As more and
more knowledge has to be stuffed into the tree, the tree grows and sprouts
twigs, which over time become branches sprouting more twigs. The
classification problem becomes unwieldy, and the retrieval problem becomes
practically impossible.
Search Engine Process - correct answer ✔1. Gather information.
2. Keep copies.
3. Build an index.
4. Understand the query.
5. Determine the relevance of each possible result to the query.
6. Determine the ranking of the relevant results.
7. Present the results.
Search Engine Spider - correct answer ✔A web crawler is an Internet bot
that systematically browses the World Wide Web, typically for the purpose of
Web indexing. A Web crawler may also be called a Web spider, an ant, an
automatic indexer, or (in the FOAF software context) a Web scutter. A search
engine uses a spider to roam the Web to gather information by following links
from the pages it visits. Software that crawls around the Web is (in typical
geekrony) called a "spider." Because the spidering process takes days or
even weeks, search engine will not know immediately if a web page is taken
down—it will find out only when its spider next visits the place where it used to
be. At that point, she will remove it from her index, but in the meantime, she
may respond to queries with links to pages that no longer exist.
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