Data Communication and Networks — DU B. Voc – Software Development Previous Year Question Papers

(iii) If a network needs 200 hosts, which subnet mask is suitable? (iv) Find number of hosts in/26. 7. (a) Describe the functions of the Transport Layer in detail. 8 (b) Explain the role of FTP and Remote Logging in the Application Layer. 7 Each question is of 5 marks. 1. (a) Explain the benefits of using computer networks in communication and data sharing. 5 (b) Explain the advantages of Client-Server architecture over Peer-to-Peer networks. 5 (c) Describe network topologies and their various types. 5 (d) Define the given networking terms: Telnet, SMTP, (e) Define TCP/IP Model with a suitable figure. 5 (f) Explain the functions of networking devices such as bridges, repeaters, gateways, and ADSL modems. 2. (a) Explain Half-Duplex and Full-Duplex Ethernet and discuss their differences. 8 (b) Describe the working of Ethernet at the Data Link 3. (a) Explain the significance of OSI model in network communication. Describe the working of all the layers. 7 (b) Compare the OSI and TCP/IP models, highlighting their basic functions. 8 4. (a) Explain layer-2 LAN switching and the learning process of a switch. 8 (b) Explain network loops and how Spanning Tree Protocol prevents broadcast storms. 7 5. (a) Explain the working of a wireless LAN. Discuss the various types of WLAN. 7 (b) Compare IPv4 and IPv6 addressing schemes and explain the benefits of IPv6. 8 6. (a) Answer the following : 8 (i) If a network needs 50 hosts, what will be the subnet mask ? (ii) If a network needs 100 hosts, what is the CIDR notation?