Section 2 - Network Models Flashcards
___ are used to represent how networks function.
Models
Name both network models.
- OSI 7-layer model
- TCP/IP 4-layer model
Data that is sent in chunks is called a __.
Frame
Frames are a maximum of __ bytes in size.
1500 bytes
What piece of hardware in the computer manifests and digests frames?
NIC (Network Interface Card)
Build a model of a frame and include all data chunks contained within a frame.
Destination MAC Address –> Source MAC Address –> Ether Type (port number[s]) –> Data –> Frame Check Sequence (FCS)
A MAC address is a unique __-bit identifier for a NIC.
48-bit
A __ __ address is included in a frame in order for the destination computer to send data back to it’s source computer.
Source MAC address
A __ transmission is addressed to a single node on a network whereas a __ transmission is sent to every node on a network.
A) Unicast, multicast B) Unicast, broadcast C) Broadcast, unocast D) Singlecast, multicast E) I give up, I don't know
B) Unicast, broadcast
Choose the correct IPv6 address.
A) 2001:0D8B8:FE01::
B) :2001:0D8B8:FE01
C) 2001::0D8B8:FE01:4020
A) 2001:0D8B8:FE01::
Which part within a frame never changes?
IP Packet
__ numbers help direct packet traffic between the source and destination.
Port numbers
Packets have __ numbers so the network software can reassemble the file correctly.
A) Port
B) File
C) Sequence
C) Sequence
Which is connection-oriented and which is connection-less?
UDP vs TCP
Connection-oriented = TCP Connection-less = UDP
Define binary
The 1’s and 0’s that is essentially “data.”
Which part of the network does packetized data live?
Frames
Repeater (Hub): takes the incoming signal and __ it to all nodes connected.
Duplicates or repeats
A MAC address is a unique, device-identifying, alphanumeric set of __ characters specific to a piece of hardware. No two devices will ever be manufactured with the same MAC address.
12 characters
What do the first 3 sets (6 characters) of numbers represent in a MAC address?
OEM numbers
What do the last 3 sets (6 characters) of numbers represent in a MAC address?
Unique ID numbers
Routers contain two or more connections and link a __ to other devices, allowing __ between them and the __.
A) Modem, communication, internet
B) Switch, data, network
C) Hub, communication, internet
A) Modem, communication, internet
What is a routing table?
A spec sheet that the router uses to track where to send data.
Default Gateway = ???
The node in a network that serves as a forwarding host to outside networks.
True or False: a sequencing number allows proper reassembly of data.
True
