Tag - Default Size

21- What is OSI?

Open System Interconnection. t was first name of 7 Layer

22- What is the default size of Frame ?
1518 bytes

23- Which layer are called upper layer?
a ) Application Layer    – 7
b) Presentation Layer   – 6
c ) Session Layer            – 5

24- How many reserve ports ?
0 – 1023

25- Which decision called socket base?
IP plus port (IP on layer 3 and port on Layer 4 – In Encapsulation, socket base decision on Network Layer -Layer 3)

26- How many types of Data?
Voice, video, text

27 What is segmentation and fragmentation?

To divide data in pieces is called segmentation and divide segmentation in pieces called Fragmentation.

28- Which layer called error detection layer ?
Data link layer

29- What is FCS?
Frame Check Sequence –
CRC (Cyclic Redundancy Check) algorithm runs in switch that called FCS (Frame Check Sequence)

30- What is Encapsulation and De-encapsulation?
To send data called encapsulation and receive data called De-encapsulation.

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