ITEC51 QUIZ 1(?) Flashcards
They constitute the link layer, the internetwork layer, and the transport layer respectively.
Layers
Corresponds strongly to the idea of a programming interface or library, with the understanding that a given later commmunicates directly only with the two layers immediately above and below it.
Layers
An Application hand off a chunk of data to the TCP library, which in turn makes calls to the IP library, which in turn calls the Lan layer for actual delivery.
Layers
An application does not interact directly with the IP and LAN layers at all
Layers
This LAN physical/logical gives us the internet five-layer model
Layers
Any one network connection has a data rate : the rate at which bits are transmitted.
Data Rate
The speed at which data is transferred within the computer or between a peripheral device and the computer, measured in bytes per second.
Data Rate
Is the amount of data moved successfully from one place to another in a given time period, adn typically measured in bits per second (bps), as in megabits per second (Mbps) ir gigabtis per second (Gbps).
Throughput
Refers to the theoretical rate of speed that data on your network can travel, which is probably a speed you won’t see very often.
Bandwidth
are modest-sized buffers of data, transmitted as a unit through some shared set of links
Packets
is collection of data that can be used by computers which need to communicate with each other, usually as part of a network.
Packets
Datagram packet switching networks like the internet, fix these drawbacks by cutting data into small chunks called Packets .
Packets
contains instructions about the data carried by the packet.
Header
the actual data is referred to as the payload. Therefore, the payload is the only data received by the destination system.
Payload
sometimes called the footer , typically contains a couple of bits that tell the receiving device that it has reached the end of the packet. It may also have some type of error checking.
Trailer
is the arrangement with which computer systems or network devices are connected to each other.
can be used to define or describe the arrangement of telecommunication various types of networks, including command and control radio networks, industrial field busses and computer networks.
Topology
a set of entries in the forwarding tables that cause some packets to circulate endlessly.
is a serious network problem which happens when a data packet is continually routed through the same routers over and over.
Routing Loops
is the reduced quality of service that occurs when a network node or link is carrying more data than it can handle.
typical effects include queueing delay, packet loss or the blocking of new connections.
Congestion
The term “__________ _______” is abstract, but the concept applies to network structure.
Broadcast Domain
is a situation where there are unexpectedly too many requests on a network.
this creates a situation where a network does not have the ability to process all the requests at once.
Broadcast Storms
bandwidth refers to the “size of the pipe” in which Internet data can travel through. If the pipe is not large enough for all the traffic to move through at once, there becomes congestion.
Low Bandwidth
when building out a network, there needs to be the integration of hubs. Hubs retransmit data over a network.
In an enterprise network, a hub is what connects the network to the public Internet.
This connection point offers a prime location for potential congestion. Thus, consider how to integrate the hub within the network.
Adding Retransmitting Hubs
is where a network allows many computers to speak to each other simultaneously.
two packets transferred at the same time can cause a collision. This collision causes network congestion.
Multicasting
Data transmitted through outdated switches, routers, servers, and Internet exchanges can cause bottlenecks.
If the hardware is not optimal, this creates a bottleneck for the transmission of data. The result is network congestion.
Outdated Hardware
