Consider the below topology STAFF01 192.168.1.0/24 NS Server STAFF AN 172.16.0.1 STAFF02 192.168.1.254 192.168.2.0/24 192.168.3.254 172.16.0.254 - ADMIN LAN OUTER SERVERS AN ADMINO1 Active Directory 192.168.2.254 172.16.0.2 GUESTO2 192.168.2.0/24 GUEST LAN DHCP Server GUESTO1 172.16.0.3 How many scopes should be installed on the DHCP server? * Your answer What is the size of the IP lease that should be set on the Staff LAN? * Your answer What is the DNS IP address offered on each PC in the topology? Type the IP Address Only. * Your answer What is the Gateway addresses offered on each Guests LAN PCs? Type the IP Address Only. Your answer
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- USING JAVA (Java Socket /TCP Programming) Please make a program that will allow users to send private messages to other users (not the server). All the users have their usernames and passwords stored in an XML file Users can only send messages to online users Messages to offline users will be stored in a separate XML fileUsing Java Programming Language (Java Socket /TCP Programming) Please make a simple messaging program that will allow users to send private messages to other users (not the server). All the users have their usernames and passwords stored in an XML file Users can only send messages to online users Messages to offline users will be stored in a separate XML fileBelow is example simulation based on Cisco Packet Tracer! Try to make an interconnection between 3 pieces of network that are connected to a router. Innetwork-1 has a DNS Server and 1 workstation, on network-2 there is an HTTP Server(.com domain) and 1 work station, on network-3 there is an HTTP Server(on the domain .com) and 1 work station. Do such a configuration so that each work station can access the existing server services on the three those networks?
- Q: Imagine a Web server that maintains a table in which client IP addresses are mapped to the most recently accessed Web pages. When a client connects to the server, the server looks up the client in its table, and if found, returns the registered page. Is this server stateful or stateless?Kindly answer this as soon as possible. Urgent and answer all parts thanks. write a multi-threaded Java program that (i) Has a single Producer class object which is a thread and a single Consumer class which is also a thread. (ii) Create a class Packet. This class should contain a simple string. (ii) Create a class Buffer that internally uses some data structure to hold incoming packet objects – it should have methods insertPkt and removePkt and should have methods to tell the user how many packets are in the Buffer at any time e.g. size. (iv) Make the Producer object at random time intervals create Packet objects and place them in the Buffer object. (v) OBJECTIVE : Use a mechanism from the books Concurrency chapter to synchronize the producer thread pushing packets into the Buffer and the consumer thread removing them such that the Buffer size always remains between 50-70 packets. (vi) Show through any means how your objective is met by running the Producer and Consumer object.Kindly answer this as soon as possible. Urgent and answer all parts thanks. write a multi-threaded Java program that (i) Has a single Producer class object which is a thread and a single Consumer class which is also a thread. (ii) Create a class Packet. This class should contain a simple string. (ii) Create a class Buffer that internally uses some data structure to hold incoming packet objects – it should have methods insertPkt and removePkt and should have methods to tell the user how many packets are in the Buffer at any time e.g. size.
- - Consider another carelessly written Web application, which uses a servlet that checks if there was an active session, but does not check if the user is authorized to access that page, instead depending on the fact that a link to the page is shown only to authorized users. What is the risk with this scheme? (There was a real instance where applicants to a college admissions site could, after logging into the Web site, exploit this loophole and view information they were not authorized to see; the unauthorized access was however detected, and those who accessed the information were punished by being denied admission.)Https is a protocol used to secure websites from being tampered with by other parties without proper authorization. it bridges the gap between sender and receiver.Using protocols like secure socket layer/TLS, HTTPS encrypts data sent over the internet, making it unreadable to anybody who shouldn't have it.This prevents a "man in the middle" assault on the system.Such assaults intercept messages before they reach their intended recipient.It then transmits the revised information to the user.It guarantees the server's authenticity, too.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)
- Currently, the web server handles only one HTTP request at a time. Implement a multithreaded server that is capable of serving multiple requests simultaneously. Using threading, first create a main thread in which your modified server listens for clients at a fixed port. When it receives a TCP connection request from a client, it will set up the TCP connection through another port and services the client request in a separate thread. There will be a separate TCP connection in a separate thread for each request/response pair.Establish a list of DNS records, classifying each one according to the kind of record it includes, and then arrange this list. Examples of each of them, along with an explanation of why it is advisable to make use of them, have been provided for your perusal. Do you feel it is feasible to have a web server and a mail server both use the same name at the same time?Consider accessing your e-mail with POP3. Suppose you have configured your mail client to operate in the 'download-and-delete' mode. When the client (C) fetches all emails from the server (S), the sequence of messages exchanged starts as follows. C: list S: 1 498 S: 2 912 S: C: retr 1 S: blah blah S: How many messages does the server store for the client? blah It cannot be known 912 498 None of the mentioned