CS 2203: Operating Systems Centre for Advance Studies in Engineering (CASE) Hand-out 8: Lab 08 Instructions March 2014 Computer Science Department Instructor: Shehreyar Rashid Lab 8: Introduction to Java and Sockets Objectives Write‚ compile‚ and execute Java programs in Linux using command line. Use an IDE to write‚ compile‚ and execute Java programs in Linux. Learn to write client-server application using Sockets. Credits: This lab uses material from Silberschatz‚ Galvin
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Review Questions 4.1 Table 3.5 lists typical elements found in a process control block for an unthreaded OS. Of these‚ which should belong to a thread control block and which should belong to a Process control block for a multithreaded system? Identifiers will appear in both thread and process control blocks‚ because both need to be identified. Processor State Information should belongs to process control block. Kernel will only interact with process not threads. Process Control Information:
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What are the two differences between user-level and kernel-level threads? Under what circumstances is one type is better than other? Answer: 1- User-level threads are unknown by the kernel‚ whereas the kernel is aware of kernel threads. 2- On systems using either M: 1 or M: N mapping‚ user threads are scheduled by the thread library and the kernel schedules kernel threads. 3- Kernel threads need not be associated with a process whereas every user thread belongs to a process. Kernel threads are
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Chapter 7 Exercise #3 – Given a disk pack with 10 platters yielding 18 recordable surfaces… A = Rotational speed = 10ms B = Transfer rate = 0.1ms/track C = Density per track = 19‚000 bytes D = Number of records to be store = 200‚000 records E = Size of each record = 160 bytes F = Block size = 10 logical records G = Number of tracks per surface = 500 a) Number of blocks per track: (C) / (E*F) 19‚000 / (160*10) 19‚000 / 1600 11.875 11 BLOCKS b) Waste per track: C – (E*F*11)
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CVE listing is a dictionary of publicly known information security vulnerabilities and exposures. IT is hosted by the Office of Cybersecurity and Communications at the U.S. Department of Homeland Security 5. Can Zenmap GUI detect which operating systems are present on IP servers and workstations? Which option includes that scan? Yes‚ the OS detection using TCP/IP stack fingerprinting option includes that scan. 6. If you have scanned a live host and detected that it is running Windows
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Guide to UNIX Using Linux Fourth Edition Chapter 5 Solutions Answers to the Chapter 5 Review Questions 1. You have just finished a 25-page paper that you have written using Emacs. The file containing the paper is called /assignments/data_sources. After your instructor has briefly looked at the paper‚ she recommends that you change all instances of the reference “data is” to “data are” before you submit it. Which of the following commands can you use to locate these references in the
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Batch Files Exercise 1 – Create your first batch file Exercise 2 – Create a directory structure Exercise 3 – Wildcards example Exercise 4 – Wildcards example Exercise 6 - Wildcards Example Exercise 7 – Copy from one drive to another Exercise 8 – Creating a Directory structure Exercise 9 – Copying and moving files Exercise 10 – Removing directories Exercise 11 – Using the ECHO COMMAND Exercise 12 – Using the call command Exercise 13 – Replaceable parameters Exercise 14
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GSIS Benefits | Government Service Insurance System Philippines Benefits Being a member of the GSIS (Government Service Insurance System) is among the greatest rewards of working in the government here in the Philippines. It’s not only about having sustainable retirement pension but also being secured and insured in your entire lifetime career. In this hub‚ I’m gonna discuss and sum up the benefits of being a GSIS member. After publishing about the SSS benefits‚ I’d like to say the GSIS benefits
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Advait 1. If following equations? A) b) c) d) Aptitude Test TCS-1 Awareness Development Initiative is a root of which of the ‚ where b is a rational number‚ then 2. From the top of a tower of height 180 m the angles of depression of two objects on either sides of the tower are 30° and 45°. Find the distance between the two objects. a) b) c) d) 3. A amount of 20‚900 is taken as loan at 9% p.a.‚ compound interest. If it is to be repaid in 2 equal annual instalments‚ what is the value of
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1. AIM: To write a C program to simulate the shortest job first algorithm with preemption. DESCRIPTION: For implementing SJF algorithm with preemption‚ we consider the arrival times of each process‚ the burst times of all the previously arrived processes. After the arrival of all the processes into the ready queue‚ the average waiting time and turn around time can be calculated by using the above algorithm. ALGORITHM: 1) start 2) read the no of processes to n 3) initialize i to 0 4) if
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