Ø    It works based on  Client-Server model . Ø    It uses UDP port no.   67 and 68   for working. ·         Port no. 67 - Server provides services. ·         Port no. 68 - Client listens. Ø    It uses  DORA   process for it’s working (Complete IP allocation process) ·       Discover ·       Offer ·       Request ·       Acknowledgement Ø    Suppose there are  four computers having IP addresses  provided by Dynamic Host Configuration Protocol server with the help of this address, they are communicating with each other. Ø    Let us consider,  one more new device (client) is added  in the network. It needs an IP address to communicate with other devices in the network. Ø    We have configured this device that it should take IP address dynamically from DHCP server (Automatic setting). Ø    So this  client send the  Discover message   in the network to all devices  ( Broadcasting of message- 255.255.255.255 ) Ø    This message contains source UDP

Sr No IPv 4 IPv6 01 It is 32-bit IP Address It is 128-bit IP address 02 It is numeric address whose octets are separated by dot ( . ) It is alphanumeric address whose octets are separated by colon (:) 03 It is written in decimal format It is written in hexadecimal format 04 It has 5 different classes   i.e. Class-A, Class-B, Class-C, Class-D, Class-E It does not have classes   i.e. classless 05 It support 2 32 =4.3 billion IP address(limited) It support 2 128 =3.4 x 10 38 IP address(unlimited) 06 It supports VLSM(Variable Length Subnet Mask) It does not support VLSM(Variable Length Subnet Mask) 07 Manual or DHCP based IP configuration No need of manual or DHCP configuration. Nodes are capable of Auto-Configuration 08 It has lack of security at network layer It has built-in strong security 09 Addres

             It is Internet Control Message Protocol.   Since IP address does not have in-built mechanism , for           sending error and control messages. It depends on ICMP to provide an error control.  ICMP is used for error reporting errors and management queries .     It is a supporting protocol and used by network devices like routers for sending the error messages and operations information. For example, the requested service is not available or that a host or router could not be reached.   ICMP can send the messages only to the source , not to intermediate router . Because the data-gram carries only the addresses of original sender and final destination.  Read more

                                                                            Read more                                                                                                               

LORDS INSTITUTE OF ENGINEERING AND TECHNOLOGY (Affiliated to JNTU, Hyderabad) MID EXAM – November, 2018 Programme : B.TECH  Semester : IV-I/III – I          Max Marks : 10     Duration :   60 minutes Course code:                                    Title: Computer Networks / DCCN Knowledge     K1 –Remembering     K2 Understanding       K3 –Applying Levels (KL)    K4 -Analyzing              K5 –Evaluating           K6 –Creating Answer any TWO Questions                                              5*2= 10 MARKS Question                                                                                        KL UNIT -3 1. Explain in short ICMP and IGMP protocols (KL1,KL2, C312.3) 2. Explain distance vector routing in brief with example diagram (KL3,KL4,KL5, C312.3) 3. Explain RIP protocol with its working (KL3,KL4,KL5,KL6, C312.3) 4. Explain Hierarchical routing with suitable example. ( KL3,KL4, KL5, C312.3) UNIT -4 1)        Explain di

JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD                                              IV Year B.Tech. ECE - I Sem                             T/P/D/C                                                                                                                           4   - / - /- 4 Computer Networks( A70515 )  Course Objectives:          To introduce the fundamental various types of computer networks          To demonstrate the TCP/IP and OSI models with merits and demerits          To explore the various layers of the OSI model          To introduce the UDP and TCP models UNIT - I Overview of the Internet  –  Protocol, layering scenario, TCP/IP Protocol Suite: The OSI Model, Internet history standards and administrations, Comparisons of the OSI and TCP/IP Reference Model  Physical Layer  –  Guided transmission media, wireless transmission media, Data Dink Layer-design issues, CRC Codes, Elementary data link layer protocols, Sliding window protoco

JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD                                                    III Year B.Tech. CSE - I Sem                                        B.Tech. III Year I Sem.                                                                        L      T      P    C             Course Code: CS502PC                                                                      4      0      0      4                                                                                                                          Course Objectives: To introduce the fundamental various types of computer networks. To demonstrate the TCP/IP and OSI models with merits and demerits. To explore the various layers of OSI Model. To introduce UDP and TCP Models. Course Outcomes: Students should be understand and explore the basics of Computer Networks and Various Protocols. He/She will be in a position to understand the World Wide Web concepts.