141⟩ What is Encapsulation and De-encapsulation?
To send data called encapsulation and receive data called De-encapsulation.
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214 CCNA Questions And Answers
142⟩ What is BIA?
Burn in Address other name is MAC address
143⟩ What is Size of IPv4 MAC Address?
48 Bits
144⟩ Why MAC address called Physical address?
Because it’s not changeable
145⟩ Who controls MAC address uniqueness and how?
IEEE (Institute of Electrical Electronics and Engineering) Controls its uniqueness.
They divide 48 bits MAC address in two parts. First 24 bits part called OUI (Organizational unique identifier) and other 24 bits are device code.
146⟩ How we can see MAC address from DOS Prompt?
ipconfig/all
147⟩ Why IP address called logical address?
Private IP called logical address because they are change able.
148⟩ What is the size of IPV4?
32 bits
149⟩ What is Syntax of IPV4?
. DOT
150⟩ How many types of IPS?
Three Types of IP
1- Public
2- Private
3- Special IP
151⟩ What are the ranges of private IPS?
A Class = 10.0.0.0 – 10.0.0.255
B Class = 172.16.0.0 – 172.31.0.0
C Class = 192.168.0.0 – 192.168.0.255
152⟩ What is the difference between bus topology and HUB?
Hub is Centralized device ( series ) .Bus topology is Decentralized device (in parallel)
153⟩ What is a VLAN? What does VLAN provide?
VLAN – Virtual Local Area Network
Vlan is a logical grouping or segmenting a network connected to administratively defined ports on a switch, they provide Broadcast control, Security and Flexibility.
154⟩ Is hub intelligent device?
No; because it not use header
155⟩ Which protocol switch use for filling its MAC-Table?
ARP – Address Resolution Protocol
156⟩ What is CAM?
Content Address Memory. its another name of MAC address table.
157⟩ Which type for communication switch do?
In case of any new event switch do broadcast, after that always do Unicast.
158⟩ If line down and protocol also down; in this case which layer move problem?
Physical Layer – Layer 1
159⟩ If line up, but protocol down which layer should be troubleshot?
Data link problem – Layer 2
160⟩ On which base switches take decisions?
Mac Address
