Technology-Chapter 3 Flashcards
(51 cards)
Communication is done in two broad classes called..
Synchronous communication and Asynchronous Communication
Synchronous Communication
Requires that both the sender and the receiver are active at the same time.
Asynchronous Communication
The sending and receiving occur at different times.
Broadcast Communication
Involves a single sender and many receivers
Multicast
Is used when there are many receivers, but the intended recipients are not the whole population.
Point-to-point communication
One specific sender and one specific receiver , internet
A fundamental feature of the internet is that it is..
Point to point communication and provides a general fabric that links all computers connected to it. Universal communications medium.
Client/server interaction
What happens when you browse the web. When the computer, the client, gets services from another computer, the server. Relationship is very short.
Web server
Yours is the client computer and the computer on which the Web page is stored is the server computer.
How do clients give the illusion of a continuous connection?
Cookies and URL Parameters
Cookies
Are small files stored on the client computer by the server, and returned to the server with each page request. The file contains enough data from the server, such as unique identifier, that it can connect you to earlier interactions.
URL Parameters
Are information added by client to a URL when it connects to the server.
How does the Internet transmit information such as Web pages and email messages?
Complex and sophisticated technologies are used to make the internet work
IP Address
-internet Protocol Address, is a sequence of four numbers separated by dots. Each computer that is connected to the internet has one, The range of each four numbers is from 0-255.
IP Packet
Computer communicates with another computer by sending an IP Packet to its IP Address.The computer being contacted and return IP Address.
Payload
What is being sent, it may be one byte or a thousand.
IPv4 and IPv6
In the 1970s they used IPv4 for the four number Byte, and then changed to IPv6 to be 16 numbers long for the IP Address.
Hop
The transition from one router to the next
Trace Route
Networking engineers record the routes packets take.
Transmission Control Protocol/Internet Protocol (TCP/IP)
Sending any amount of information is possible by breaking it into a sequence of small fixed-size units. Continues to work under adverse conditions. each packet is Independent ***
Wide Area Networks (WANs)
The internet is a collection of this, meaning networks designed to send information between two locations widely separated and not directly connected.
Local Area Network (LAN)
When computers are close enough to be linked by a single cable or pair of wires. Main technology for LAN. Commonly used at schools or businesses.
Channel
The physical set up for an Ethernet network is a wire, wire pair, or optical fiber, that winds past a set of computers.
Explain the difference between the Internet’s TCP/IP Protocol and Ethernet’s party protocol.
Internet uses point to point network to implement point to point communication. Multiple communications can take place at once over different wires.
Ethernet uses a broadcast network for point to point communication. Only one communication can take place at a time because there is just one wire. Carries less traffic.
