UGC NET CSE | June 2019 | Part 2 | Question: 82

Question

What is the name of the protocol that allows a client to send a broadcast message with its MAC address and receive an IP address in reply?

• A. ARP
• B. DNS
• C. RARP
• D. ICMP

Answer 1

3)

Reverse Address Resolution Protocol

It is used to get IP address with the help of Physical address(MAC Address).

 

 

Answer 2

The protocol which converts MAC to IP address is Address resolution protocol(ARP). 

So, the answer is A. 

Answer 3

RARP (Reverse Address Resolution Protocol ) client (say ,Host A) sends a request packet with broadcast MAC Address and receive an IP in reply. 

RARP request packet at NL

Ma	0 . 0 . 0 . 0

 

RARP request packet at DLL

                                                                                                            Source MAC                Dest. MAC                            

Ma    0 . 0 . 0 . 0

Ma

ALL 1's

Since , All 1's broadcast MAC adress.

RARP reply packet from RAPR server. 

At Network layer:

Ma	IP address of A

AT DLL:

                                                                                                           Source MAC                Dest. MAC                            

Ma  IP address of A

RARP server MAC                       address

Ma

Answer 4

Rarp convert physical address logical address

ARP convert logical to physical address

Option C is correct