Lab 11 Answer Template Ph1

Discrete Structures or Discrete Mathematics

9.Correct expression tor UDP user datagram length is length of UDP = length of IP- length of IP header's length of UDP= length of UDP-length of UDP header's length of UDP = length of IP+length of IP header's length of UDP = length of UDP+length of UDP header's.

USING JAVA (Java Socket /TCP Programming) Create a chat/messaging application that has the following functionalities/features: Broadcast message (to all users) Private message to only one message (established usernames are stored in an XML file)

The protocol data unit (PDU) for the application layer in the Internet stack is a. Segment b. Datagram c. Message d. Frame

We have seen that Internet TCP sockets treat the data being sent as a byte stream but UDP sockets recognize message boundaries. What are one advantage and one disadvantage of byte-oriented API versus having the API explicitly recognize and preserve application-defined message boundaries?

What is XSLT code?

How do serialization protocols handle polymorphic objects?

What is narrowcasting?

We have seen that Internet TCP sockets treat the data being sent as a byte stream but UDP sockets recognize message boundaries. What are oneadvantage and one disadvantage of byte-oriented API versus having the API explicitly recognize and preserve application-defined message boundaries?

Q1: Draw a diagram showing the HTTP protocol stack associated with web browsing. Include in your diagram a stack of web client, name server and a web server. Also include the directions of HTTP request/response messages and DNS query response messages.

We have seen that Internet TCP sockets treat the data being sent as a byte stream but UDP sockets recognize message boundaries. What are one advantage and one disadvantage of byte oriented API versus having the API explicitly recognize and preserve application-defined message boundaries?

CSE1A Eighth Question

Q10: Complete the frames (x & y) given below with appropriate port, IP and MAC addresses. The sender Host E has two applications running; one for email with port number 49254 and the other for accessing the web server with port number 52167. The frame x is intended for the BRACU Web server and frame y is coming from the Email Server. (MAC addresses are alphabets and IP addresses are numbers) [5] Port 80 Frame y K/93 BRACU G/51 Router BRACU Web ISP Frame x Server Router I/91 Port 25 Н 52 F/25 Hub-PT Hubo A/20 Switc-PT Switcho Swich-Pr Syitch1 Email Server J/92 B/21 E/24 C/22 D/23 Sender Frame X D. Mac S. MAC D. IP S. IP D. Port S. Port Data Trailer Frame Y D. Mac S. MAC D. IP S. IP D. Port S. Port Data Trailer ** *******END***: *** *** *****

CSE1A Sixth Question

5 Internet Protocol version 4 (IPv4) was deployed on 1 January 1983. The addressformat in IPv4 is a 32-bit numeric value often expressed with four octets from theinterval [0, 255] separated by periods. At the time of writing this book, InternetProtocol version 6 (IPv6), with 128 bit-wide addresses, is slowly replacing IPv4. Intheory, how many IP addresses can be assigned in IPv4 and IPv6?

Please written by computer source

ASN.1 is an ISO standard used in many internet‑related protocols, especially those in the area of network management. In ASN.1, BER (Basic Encoding Rule) uses a so‑called TLV (Type, Length, Value) approach to encoding data for transmission. According to this BER encoding rule, what would be the encoding of {weight, 178} {lastname, “Philips”}?

What is the difference between a broadcast and a collision domain?

TCP MULTIPLEXING AND DEMULTIPLEXING In the scenario below, the left and right TCP clients communicate with a TCP server using TCP sockets. The Python code used to create a single welcoming socket in the server is shown in the figure (the welcoming socket itself is not shown graphically); code is also shown for the client sockets as well. The three sockets shown in server were created as a result of the server accepting connection requests on this welcoming socket from the two clients (one connection from the client on the left, and two connections from the client on the right). mySocket = socket (AF_INET, SOCK_STREAM) mySocket.bind (myaddr, 6189 ); P1 Answer mySocket = socket (AF_INET, SOCK_STREAM) mySocket.bind (myaddr, 5854 ); ♫ transport QUESTION 1 OF 8 network link physical What is the source port # for packet C? www B source port: ? dest port: ? P4 HIGH A source port: ? dest port: ? P5 P6 transport network lirk physical mySocket1 = socket (AF_INET, SOCK_STREAM) mySocket1.bind…

TCP MULTIPLEXING AND DEMULTIPLEXING In the scenario below, the left and right TCP clients communicate with a TCP server using TCP sockets. The Python code used to create a single welcoming socket in the server is shown in the figure (the welcoming socket itself is not shown graphically); code is also shown for the client sockets as well. The three sockets shown in server were created as a result of the server accepting connection requests on this welcoming socket from the two clients (one connection from the client on the left, and two connections from the client on the right). mySocket = socket (AF_INET, SOCK_STREAM) mySocket.bind (myaddr, 6189 ); P1 mySocket = socket (AF_INET, SOCK_STREAM) mySocket.bind (myaddr, 5854 ); U transport network link physical QUESTION 2 OF 8 B source port: ? dest port: ? What is the destination port # for packet C? P4 P5 P6 transport network link physical A source port: ? dest port: ? mySocket1 = socket (AF_INET, SOCK_STREAM) mySocket1.bind (myaddr, 5262…

Q.3 In network programming, structs are often used to represent protocol headers due to their ability to neatly encapsulate various types of data. (a) Define a struct named ProtocolHeader with the following fields to mimic a network protocol header: " version (unsigned integer, 4 bits) IHL (Internet Header Length, unsigned integer, 4 bits) typeOfService (unsigned integer, 8 bits) totalLength (unsigned integer, 16 bits) identification (unsigned integer, 16 bits) flags (unsigned integer, 3 bits) fragmentOffset (unsigned integer, 13 bits) timeToLive (unsigned integer, 8 bits) protocol (unsigned integer, 8 bits) headerChecksum (unsigned integer, 16 bits)

Computer Science Draw a UML design for a Simulation of a DNS Server Using Java. DNS is a directory service that provides a mapping between the name of a host on the network and its numerical address and is required for the functioning of the internet.