• Start Wireshark • Turn on Wireshark capture • Type a URL in your browser window • After a few seconds, stop the capture. • Answer the following questions: 1. a) What URL did you use? What was the IP address of the web server? b) Find the frame in which your PC sent the SYN packet. List the source and destination IP address, the source and destination port numbers, and the header checksum. c) Select the SYN/ACK packet. List the source and destination IP address, the source and destination port numbers, and the header checksum. d) Select the packet that acknowledges the SYN/ACK segment. List the source and destination IP address, the source and destination port numbers, and the header checksum. 2. Change the options so that only packets you send are recorded. Do a capture. Click on the window containing Wireshark and hit ALT-Enter. This captures the window to your clipboard. Paste into your homework. 3. Are there any FTP or Telnet sessions? Why are FTP and Telnet considered insecure protocols? 4. Are there any SSH sessions? How does Telnet relate to SSH? Tell us why SSH v2 is better?

To become an audio technician, the most successful tactics might include the following. (select all that apply). learning how to persuade other people gaining different types of experience in audio technology learning as much as possible about art history establishing a reputation as a reliable professional

Name the range function that would generate the following list of integers values: 0,1,2,3,4,5.

File account.java (see previous exercise) contains a definition for a simple bank account class with methods to withdraw, deposit, get the balance and account number, and return a string representation. note that the constructor for this class creates a random account number. save this class to your directory and study it to see how it works. then write the following additional code: 1. suppose the bank wants to keep track of how many accounts exist. a. declare a private static integer variable numaccounts to hold this value. like all instance and static variables, it will be initialized (to 0, since it’s an int) automatically. b. add code to the constructor to increment this variable every time an account is created. c. add a static method getnumaccounts that returns the total number of accounts. think about why this method should be static - its information is not related to any particular account. d. file testaccounts1.java contains a simple program that creates the specified number of bank accounts then uses the getnumaccounts method to find how many accounts were created. save it to your directory, then use it to test your modified account class.