34 votes 34 votes Which one of the following protocols is NOT used to resolve one form of address to another one? $\textsf{DNS}$ $\textsf{ARP}$ $\textsf{DHCP}$ $\textsf{RARP}$ Computer Networks gatecse-2016-set1 computer-networks network-protocols normal + – Sandeep Singh asked Feb 12, 2016 • edited Jun 22, 2021 by Lakshman Bhaiya Sandeep Singh 18.3k views answer comment Share Follow See all 9 Comments See all 9 9 Comments reply Show 6 previous comments bhuv commented Jan 5, 2018 reply Follow Share The point to note here is both ARP, RARP are used when "static assignments of IPs" are done i.e. IP given generally set by Admin. But DHCP is formed to solve this issue too, so it provides dynamic IP's to host that are requesting a IP(see carefully it is not a conversation of MAC to IP but an assignment i.e a new entry is added in Router table for the Host MAC and IP while in ARP and RARP both MAC and IP were already present they is conversion of IP to MAC and vice-versa (no Assignment)). 2 votes 2 votes Shiva Sagar Rao commented Jan 9, 2021 i edited by Shiva Sagar Rao Jan 10, 2021 reply Follow Share Official answer key was option C i.e., DHCP Source of following links are from GATE 2019 website or archive in PreExam Previous year Question papers or archive and Previous year Answer Keys or archive. So they are authentic. GATE 2016 Set 1 Question Paper: https://drive.google.com/file/d/11OOjvNF_zzeeeB2oHAi8R5fndsikrjJi/view or archive GATE 2016 Set 1 Answer Key: https://drive.google.com/file/d/1mbJkwNpy0GMA1zF-CwPjS9rsO8JoxOn5/view or archive 0 votes 0 votes milinbhade commented Dec 29, 2021 reply Follow Share In order to assign IP address to a device it must have to save somewhere that this device has been assigned this IP address, For this it must save info about this device, which is the MAC address, isn’t this conversion needed in DHCP? 0 votes 0 votes Please log in or register to add a comment.
Best answer 36 votes 36 votes A) $\textsf{DNS}$ - host name to IP address B) $\textsf{ARP}$ - IP to MAC D) $\textsf{RARP}$ - MAC to IP So ANSWER is C abhilashpanicker29 answered Feb 12, 2016 • edited Jun 22, 2021 by Lakshman Bhaiya abhilashpanicker29 comment Share Follow See all 23 Comments See all 23 23 Comments reply Show 20 previous comments mcjoshi commented Jan 24, 2017 reply Follow Share Were marks given to all? 1 votes 1 votes MahanthMaha commented Dec 25, 2022 reply Follow Share Dynamic Host Configuration Protocol (DHCP) is a network protocol that is used to assign IP addresses and other network configuration parameters to devices on a network. It enables devices such as computers, smartphones, and tablets to communicate with each other and access the internet. DHCP does not directly convert one form of address to another. Instead, it assigns IP addresses to devices on a network and manages the allocation of IP addresses to ensure that each device on the network has a unique IP address. This process is known as IP address assignment. When a device connects to a network, it sends a broadcast message requesting an IP address. The DHCP server receives the request and assigns an available IP address to the device. The DHCP server also provides the device with the necessary information for accessing other network resources, such as the default gateway and the DNS server. In summary, DHCP assigns IP addresses to devices on a network and manages the allocation of IP addresses, but it does not directly convert one form of address to another. 1 votes 1 votes saheb sarkar1997 commented Dec 29, 2022 reply Follow Share Dhcp has both dynamic and static databases for every query at first check static mapping if it does not get then assign a random IP here also mapping is done na because we have a static database present. 0 votes 0 votes Please log in or register to add a comment.
30 votes 30 votes Answer is DHCP as given in gate 2016 key too. Because it assigns an ip address to a host connected to internet. It does not convert any address to another. sushmita answered Dec 1, 2017 sushmita comment Share Follow See all 5 Comments See all 5 5 Comments reply Show 2 previous comments biswajitbora commented Sep 12, 2021 i reshown by biswajitbora Sep 17, 2023 reply Follow Share If that is the case, then RARP should also be wrong answer. RARP also assigns. It doesn’t convert. DHCP works the same way RARP does except for the fact that RARP doesn’t have any relay agent and is static. DHCP is both static and dynamic. It has a mapping table with the MAC addresses and their corresponding IPs (in the static part of the table, of course). Which means it too converts the MAC address to the corresponding IP address (using the static part of the table) and sends the IP address back to the device who was asking for it (just like RARP or BOOTP). Hence option D should also be wrong that way. 0 votes 0 votes Rutuja Desai commented Jan 17, 2022 reply Follow Share what about bootp ? 0 votes 0 votes satyaAchar commented Mar 31 reply Follow Share sushmita but in DHCP table there was a field called mac address. Does this assign mac address after getting ip. 0 votes 0 votes Please log in or register to add a comment.
22 votes 22 votes A) DNS - host name to IP address or vice versaB) ARP - IP to MAC c) DHCP-MAC to IPD) RARP - MAC to IP So answer will be A only because host name is not an adress as in other options. Rajat Sharma 1 answered Feb 15, 2016 Rajat Sharma 1 comment Share Follow See all 5 Comments See all 5 5 Comments reply Show 2 previous comments Rajat Sharma 1 commented Feb 15, 2016 reply Follow Share Lets wait for key ,Everything will be clear :) 0 votes 0 votes abhilashpanicker29 commented Feb 18, 2016 reply Follow Share https://www.youtube.com/watch?v=q3MwN9R0Br4Lec 34, Computer Networks by Prof.S.Ghosh, Department of Computer Science & Engineering, I.I.T.,KharagpurWatch from 3:00 to 6:00 He clearly says.. "Names - This is also some kind of address"..and also herehttp://www.cs.princeton.edu/courses/archive/spr08/cos461/slides/08Mapping.pptIt is given as an address explicitly.. 0 votes 0 votes cse7 commented Sep 18, 2016 reply Follow Share So, what is the answer here ? 0 votes 0 votes Please log in or register to add a comment.
4 votes 4 votes Answer would be C as per my knowledge. G VENKATESWARLU answered Feb 19, 2016 G VENKATESWARLU comment Share Follow See all 0 reply Please log in or register to add a comment.