Lesson 1: OSI and TCP/IP models Flashcards
1
Q
LAN meaning
A
local area network
2
Q
WAN meaning
A
wide area network
3
Q
Protocol Data Units (PDUs) are
A
rule for exchanging data
4
Q
encapsulation
A
describes how data should be packaged for transmission
5
Q
layer 1 PDU name
A
bit stream
6
Q
layer 2 PDU name
A
frames
7
Q
layer 3 PDU name
A
packet
8
Q
layer 4 PDU name
A
segment (datagrams)
9
Q
layer 5-7 PDU name
A
data
10
Q
TCP
A
connection established flow control
11
Q
UDP
A
unreliable (connectionless) security applications (firewalls)
12
Q
layer 2 deals with
A
MAC addresses
13
Q
layer 3 deals with
A
IP addresses
14
Q
layer 4 deals with
A
logic ports and firewalls
15
Q
layer 1
A
phsyical
