Please enable JavaScript.

Coggle requires JavaScript to display documents.

INTERNET TECHNOLOGIES - Coggle Diagram

- - - - Characteristic of IPv4
        
        •used a 32-bit address scheme
        
        •Four groups of decimal numbers
        
        •Number each group is between 0-255
        
        •seperator: period(.)
        
        •Each group consist of 8-bits
        
        •0.0.0.0 (lowest ip adress)
        
        •255.255.255.255
      - Structure of IP address
        
        •IPv4 address has two parts:
        
        • i)The network ID/part (first three numbers) identifies the network
        
        • ii) The host ID/part (last number) identifies the specific computer
    - - -The growth of the Internet has led to a shortage of IPv4 addresses .Because of this increase , IPv4 addresses are running out.
        -IPv6 uses a 128 -bit address scheme
      - examples
        
        i) 2001 :Odb8:0a0b: 12f0:0000:0000:0000:0005
        ii) 2021 :0db8:0:0:1319:8a2e:0370:57ab
      - Structure of IP address
        
        •Each IPv6 address (eight groups/fields of four hexadecimal digits, seperated by colons)
        
        •Each group consists (16 bits)
        
        •0000 to FFFF
        
        •Total bits 8x16 = 128bits
      - Importance of IPv6
        
        •Due to the growth of devices accessing the internet , the original IPv4 addresses began decreasing availability.
        •Thus, the solution is for IPv6 to accommodate this increased demand by providing a much larger address space , along with improved traffic routing and better security.
- - - - •Search engine is a search tool that finds websites , webpages , images , video , news , maps , and other information related to a specific topic.
        
        •Requires the user to enter a word or phrase which is known as keyword.
        
        •it uses the keywords to search for documents that relates to these key words and then put the result (hits) in order of relevance to the topic that was searched for.
    - - •Subject directory is a search tool that classify webpages in an organized set of categories and subcategories.
        
        •Directories are useful for finding information on a topic when you dont have precise ideas of what you need.
        
        •When you click on the category link, the subject directory displays a list of subcategory links.
      - EXAMPLES
        
        i) Google Directory
        
        ii) Yahoo! Directory
        
        iii) Looksmart Directory
        
        iv) Best of the aweb Directory
        
        v) dmoz