Chapter 3 Flashcards
Communication between a web server and web client is an example of an interaction between several protocols. Name the four.
HTTP
TCP
IP
Ethernet
Segmentation:
Breaking communication into pieces
Name the five Protocol Data Units Encapsulation processes and their respective layers
Data - Physical layer Segment - Transport layer Packet - Network layer Frame - Data Link layer Bits - Physical layer - when physically Tx data over the medium
The ___ and ___ link layers are responsible for delivering the data from source and destination address, but their addresses have different purposes.
network and data
The IP packet contains two IP addresses - what are they?
- Source IP
2. Destination IP
What does Layer 2 and Layer 3 do?
Layer 2: header uses NIC as source and destination (data link layer)
Layer 3: IP packet uses IP addresses as source and destination (network layer)
What’s the role of the network layer address and its two parts?
Gives an IP address for source and destination
Network Portion: 192.168.1 network address
Host Portion: 110 end part
T or F: The subnet mask is used to identify the network portion of an address form the host portion.
True
MAC address of an NIC is written in what notation?
hexidecimal, decimal or binary?
hexidecimal
TCP/IP is an example of a ____.
Protocol suite
What’s the two most widely used networking models?
OSI and TCP/IP
Protocol Data Units (PDU) are named according to the protocols of the TCP/IP. What are the five names?
Data Segment
Packet Frame
Bits
What would cause a switch to have multiple addresses?
Another switch is connected to it.
What is protocol?
List of rules
what is multiplexing?
More than one thing on a line or data
Describe Physical Layer
Gets info across the cable, transports data across the data link - gets from one side of network to the other.
Describe bandwidth and through-put
Bandwidth: Maximum speed available, capacity of the medium to carry the data.
Throughput: How fast data is traveling, (not more speed) - the measure of the bits across the media at a given time.
Describe Latency and Goodput
Latency: amount of time (delays) for data to travel from A to B
Goodput - measure of good data Tx over a given time.
What is stored in the CAM (MAC Address table)?
Source MAC address.
Draw out cross-over cables and straight through cables and define its use.
Cross-over uses like devices (switch-switch, host-host, router-PC)
Straight-through uses un-like devices (host-switch, switch to router)
What is the frame check sequence?
Error detection
Clients ___ for stuff, servers ___ stuff.
ask (info) / give (info)
Scalabililty | does or does not | use peer to peer?
doesn’t
Physical layer and data link layer are the | same or different | thing?
Same
