Operating System Questions and Answers May 13, 2021

Running, Ready and Blocked are three states that a process can take in the five-states model seen in class. Give all valid transitions and twhat makes a process go through these transitions.

Voting in the United States has become a point of controversy between the major political parties. Suppose the United States Congress were to mandate that all states undergo digital transformation to employ a blockchain-verified voting process such as that used in Estonia. Illustrate the voting process in your state of residence using Business

Suppose a 32GB memory card with a writing speed of 45 MBs is formatted and used in a digital camera for saving pictures in RAW format (i.e., uncompressed and unprocessed). Each picture has a resolution of 1920x1080 and a color depth of 24 bit. At maximum, how many pictures (in RAW format) can be taken by such camera consecutively in 5 seconds If

Explain the concept of a microkernel in operating systems. What are its advantages and disadvantages?

Completing the configuration of Deploying Windows Server Update Services (WSUS) Installing WSUS Configuring WSUS Configuring WSUS Synchronization Configuring WSUS Computer Groups Configuring Group Policies for Updates Configuring ClientSide Targeting Approving Updates Viewing Reports Performing initial configuration tasks in the Server

A company is preparing to migrate from IPv4 to iPv6, and you are responsible for determining the steps that take the company up to deploying a transition technology. Your company uses Windows 7 and Windows 10 with the latest service packs for client computers as well as Windows Server 2012 and Windows Server 2016 for your server infrastructure.

What is WDS? You are requested to install WDS Server Role and configure it to deploy Windows 7 or 10 from it to a Virtual Machine. Installing WDS Role Preparing Windows 7 or 10 ISO image Managing DHCP Server for Windows 7/10 Client installation Configure WDS Server Booting VM from the network Installing Windows 7/10 from WDS Server

Start the Server Manager, Tools, DNS On the Windows Server 2016 VM, On the right panel, double click on csis.com What is the IP# of your DNS Server _______________ 192.168.3.72 In VirtualBox, make a network with this DNS Server Windows 10 VM IP# 192.168.3.4 Subnet Mask 255.255.255.0 Default Gateway 192.168.3.1 Preferred DNS 192.168.3.72 Windows

The following scenario is used for Case Projects 21 through 26 Darts is a sporting goods company with outlets in most of the western states. This company has a network of 10 servers and 273 client computers that have the following operating systems Eight Windows Server 2012 servers Two Linux servers running Red Hat Linux Enterprise 20 computers

The network is configured as an upgraded Windows Server 2020 Active Directory network. Each remote location is configured as a separate domain. All servers now run on Windows 2020 Server or Windows Server 2022. Client computers include a mix of various Windows versions, Mac Server X and different Linux distributions. All network devices are

A junior administrator accidentally deleted the Sales OU, which contained 25 user accounts and 4 group accounts. You have five DCs in your network: two running Windows Server 2016, two running Windows Server 2008 R2, and one running Windows Server 2008. Explain what you need and the procedure for recovering the deleted objects.

Suppose that you are the new administrators for the Contoso Corporation, which is a leading company in producing smart devices for the home. You need to read the background information for the Contoso Corporation provided in Appendix, then read the information provided in Task1, Task2, Task3 and Task4, and then describe your solution for all of

A network which has 15 Windows Servers 2012 EE & 200 Windows 7 workstations. Your supervisor has given you the responsibility to implement SAN as a solution for storage. He wants you to make a presentation to the corporate stakeholders. Answer some of the following in your presentation: What are the key features for SAN and what are the

Windows License requirements for Server 2019. Answer the below questions.: How many licenses are needed for 100 users How many licenses are needed for 20 printers How much does Windows charge per core? How much does Windows charge for 4 servers each with 2 -16 core processors? How much does Windows charge to install in a virtual environment? What

Merlinos Mills is a company that produces flours and grains for grocery stores. It owns mills and distribution centers in the Northwestern and Midwestern United States. The headquarters in Bend, Oregon employs more than 400 people, most of whom use computers. Also, the headquarters has 28 servers, all running Microsoft Windows Server 2012 R2

Make a conclusion of this case study System Insights System Insights is a new feature available in Windows Server 2019 that brings local predictive analytics capabilities natively to Windows Server. These predictive capabilities, each backed by a machine-learning model, locally analyze Windows Server system data, such as performance counters and

Make a simple diagram in Cisco packet tracer. Create a network diagram with: an external webserver a Windows AD domain main server a Windows AD domain secondary server A Linux file server Windows desktop clients Windows desktop clients who are in a higher security network isolated from the other desktop clients Linux research machines without

SoftArc Engineering is a civil engineering firm company which works across Australia as well as in Indonesia, Timor Leste and Papua New Guinea. SoftArc Engineering currently has a small self-managed data centre that has the following servers: 2 x Active Directory domain controllers on Windows Server 2012 R2, (2 x Xeon 3.6GHZ, 8GB RAM, 140GB HDD).

A case reporting that a user is unable to access one of their courses. a. You have access to the servers, the database, and the error logs. What steps would you take to begin your investigation? Provide reasoning for the starting point and describe your next steps. b. Give a step-by-step solution on how to fully solve this problem and get the

Check off all the applications or tools you would use during your investigation. Additionally, provide a brief explanation about why you would use that application or tool. Cluster Administrator Computer Management Debug Diagnostics Directory Properties Distributed File System Fiddler IIS Logs IIS Manager PerfMon Product Error Logs sp WholsActive

A new third-party application has been installed on your Windows Server in a load balanced clustered environment and the installation created a series of specific Windows Services that must be automatically started for the application to run. These services run in the background and need Internet access to connect to the external application

List at least three Flexible Single Master Operations (FSMO) Roles List at least three roles of a system administrator What are the difference between local user and Domain user accounts in Active Directory environments Describe the Failover Clustering feature in Windows servers and what are its benefits

Install Windows Server 2016 in your school install Windows Server 2016 in your house. What type of installation do you choose for your school and which type do you choose for your home? Why did you choose that server for your school and that server for your home?

You are a Systems Engineer at a mid sized company. Your team has been tasked with setting up a file server that is mission critical. Your company has promised a client that this file server will be operational 99.995% of the time. Your team has decided to setup a Microsoft Cluster with the File Server role installed on it in order to facilitate

What licensing is required for Windows Server 2019 Standard? What licensing is required for clients of Windows Server 2019? How do these requirements compare with what is required for Windows Server 2019 Essentials?

You have a Windows 7 computer that you have upgraded with more RAM so you can upgrade to Windows 10. You want to maintain your applications, settings and data as much as possible. What type of installation should you choose? You are preparing to upgrade to Windows 10 on a computer that is running Windows Vista Pro. Which edition of Windows 10 do

How to implement a virtual infrastructure and prepare a report for the TRP group. Proposed virtual infrastructure for the data centre. using VMware 1)A discussion of the technical infrastructure proposed including: a) Number and type of hosts required including CPU, RAM and internal storage requirements b) Host clustering requirements and number

1) In a Windows clustering in a virtual environment, what are the 3 types of cluster configurations? 2) Why would you use clustering? 3) Define "role" ,"priviledge"and "permission" in the ESXI/vCenter Server security model. 4) Name and Describe the 3 vSphere storage presentation models ( 5) How does vSphere use shared storage?

Many businesses large and small, Windows Server may end up being the ideal server operating system. With native support for Windows applications and a similar user interface to the PC version of Windows, Windows Server offers a lot that may be attractive to a business leader or system administrator. We have put together the following primer to

Which editions of Windows Server 2012 support a Server Core installation? What is the difference between a full installation of Windows Server 2012 and a Server Core installation and when would each be preferred?

If you are currently using a version of Windows Server older than Windows Server 2016, you can shift to using Windows Server 2016 in one of two ways: you can upgrade to Server 2016 or you can migrate to Serve 2016. Discuss the advantages and disadvantages of each approach.

A private computer consultant, and Ed. a new client who owns a software company, has approached you about upgrading his network. The network currently consists of eight servers, all running either Windows 2000 Server or Windows Server 2003, and 150 work-stations running Windows XP All of the servers have 32-bit processors running at speeds ranging

A server engineer inherits an application server running Windows 2008. The hardware used by the server is very old and the software application running on the server is not tested and supported on WindowA server engineer inherits an application server running Windows 2008. The hardware used by the server is very old and the software application

Create the following group policies in the Student OU: i. Enable strong password policy with 12 characters. ii. Accounts should be locked after 3 unsuccessful attempts for 30 minutes. iii. Remove recycle bin from desktop. iv. Prevent changing desktop background. v. Remove Add or Remove Programs. vi. Interactive Logon Message: Use of this system

Create Active Directory Domains and Trusts 1 Explain how to use the Active Directory Domains and Trusts tool. 2 Create a two-way trust between two active directory domains. Describe NLB (Network Load Balancing) and Clusters 1 Setup NLB. 2 Configure NLB. 3 Explain Windows server clusters. 4 Configure Windows server clusters. Setting up Windows File

Recommending Windows Server 2008 to an Organization You are a consultant for Terrapin Technologies, a Microsoft-certified solutions provider. Terrapin Technologies has been asked by one of their clients, Vagabond Paper Products, for recommendations to meet their changing business needs. Currently, Vagabond Paper is run- ning Server 2003 with

Demonstrate the types of software applications that are prime for NLB and those that are better protected with failover clusters, discuss the various operations and dissect the functions; which functions should be protected by which technology?

Youre going to set up a high-availability share configuration with failover clusters. You have four sites, and three will have cluster nodes. Site1 has three cluster nodes, Site2 has four cluster nodes, Site3 has two cluster nodes, and Site4 has no cluster nodes. What quorum configuration should you choose for this configuration? Describe some

Seneca Music has just purchased some new servers for their network. Their 4 old servers are in good working order and meet the minimum requirements for Windows Server 2012 R2, but they are not very powerful. Explain to Seneca Music, how clustering these old servers might be useful for them. What are some of the benefits of using a these servers in

Before you undertake a server deployment, you must prepare several images to use as a part of the process. (a). Describe the steps required to build a boot image for a Windows Server 2012 R2 rollout to a single site. (b). Describe the steps needed to create an install image for a large number of Dell servers with similar configurations. (c).

Perform the following tasks on the Windows Server 2016, Launch Failover Cluster Manager . Pin the Hyper-V Manager tile to the Start screen. Pin Computer Management to the taskbar.

Discuss a typical organization with distributed locations. How would you insure high availability of resources? What types of load balancing and failover would be installed?

Discuss the features of Failover Cluster Manager and the content of the Failover Cluster Validation Report

Review the Failover Clustering in Windows Server and Azure Stack HCI Microsoft webpage and any other failover clustering resources that you can identify and write an analysis explaining why one would use failover clustering and what it is. Are there any drawbacks to it?

Under which Windows Server 2016 tool is the Failover Cluster Feature installed? How can I get a Failover Cluster Validation Report? Define in your words the term network file system (Network File System). Define in your words the term dynamic access control (Dynamic Access Control). Under which Windows Server 2016 tool can you enable the DAC? What

A. As a Network Admin in Honda Corporation, and you have a server that acts as a file server for clients. (more than 100) You must make sure that the server is up at all times. What would you recommend? B. You design a Failover cluster at Siman Corporation and cluster used as a file server that is running Windows Server 2008 R2.

Sketch an example of the cache memory of 32 blocks and the main memory of many blocks. On your sketch show how main memory blocks 3, 23, 40, 50 are directly mapped to this cache memory.

If the real address is 136BA, using direct mapped cache determine the byte offset, index, and tag in the cache memory if the memory system has the following attribute.The main memory is 128kB. The cache memory is 8 kB. The block size is 64 byte

Answer the following questions about cache memory using a computer system with the following characteristics Total Memory Requests 5000, Memory Requests Found in Cache 3500, Average Main Memory Access Time 1000 nsec, and Average Cache Memory Access Time 200 nsec. A. What is the Hit Ratio for the system B. What is the Average Memory Access Time for

A hypothetical computer system has a hierarchical memory architecture consists of cache memory of size 32 KB with a block size of 32 bytes. CPU generates 32bit physical addresses. Identify the address structures for the following cache memory mapping functions. Direct Mapping (No. of bits required for Tag, Line and Word fields) Eightway Set

For the following cache and RAM memories Cache structure R 11 01 Tag (D,A,S) Line 0,011,10 X LO 1,110,01 X L1 1,111,00 L2 L3 10 00 RAM structure Tag (D,A,S) Word (hexadecimal) 1A3F 0,000,00 Block BO 4680 AADC 0,001,00 Bl BBBB CCCC 0,010,01 B2 1719 A4E8 0,011,01 B3 2F2A BB33 1,100,10 B4 EDEC 5632 1,101,10 B5 999A FF67 1,110,11 B6 007B FEDC

Assume Main memory size as 4K words and cache memory size as 512 words. The main memory and cache memory is divided into blocks of size 8 words. Explain address fields and mapping technique using 2 way set associative mapping method.

A MIPS processor has a 32-bit address bus with and a cache memory to hold 8K (=2^13) memory words. If a 4-way set associated cache is used to implement cache with a block size of 8 main memory words then find: Number of bits for block field Number of bits for set field Number of its for-tag field The capacity in number of main memory words

The size of main memory as 32 Bytes and the size of cache memory as 8 Bytes. Implement the Set-Associative mapping technique. Do the following: a) Find the number of bits to address 32 bytes in the main memory b) Write the formula to map block of main memory to set of cache memory c) Find the block size, line size, set size, tag size d) Draw the

With schematic diagrams, explain each of the following cache memory architecture 1. Direct Mapped 2. Set Associative 3. Fully Associative For the following memory access operations of the same index, determine HitMiss and Way numbers for a 4way set associative cache memory when (1) LRU and (2) FIFO replacement techniques are used. Memory access

A computer system with a cache memory has an average memory access time of TM 60 ns with a hit ratio of h 85. The primary memory access time is T220 ns. What is the cache memory access time, Te Show the equation all steps of the computation. For each of the following cache organizations, indicate all their fields with their names and sizes in

Cache memory is a temporary storage component that makes retrieving data from the computer's memory more efficient. Discuss the purposes of using such component in computer system and provide examples of the latest developments in caching memory component.

Consider the cache memory depicted in Figure . For a main memory capacity of 2* words, determine the total number of bits in the cache array and derive the contribution of nondate bits as a percentage overhead relative to actual data bits. Repeat above part for the cache memory depicted in Figure. Direct-mapped cache holding 32 words within eight

03 2bit word offset in line Main 47 811 memory 3bit line index in cache locations Word Tag address 3235 3639 4043 6467 6871 7275 Tags Valid bits Read tag and specified word 9699 100103 104107 Data out 1, Tag 1 if equal Compare Cache miss

Design a Cache memory for your Project for a direct-mapped cache with 1MB of data . Design a Cache memory for your Project for a direct-mapped cache with 64KB of data . Assume n-word block size, assuming a N-bit address ? N=19 n=5

Consider the execution of the following program segment on an 88 array A. for i 0 to 7 do sum 0 forj 0 to 7 do sum sum a(ij) end for ave(i) sum8 end for Assume that the main memory is divided into eight interleaved memory blocks and that each cache memory block consists of eight elements. Assume also that the cache memory access time is 10 ns

Design the planning function for this system and show the details of the connection between Cache memory and main memory. The cache used is divided into two memories, one for data and another for instructions. Both memories are sized .8Kbytes Transfer data(data bus I think) between Cache memory and the main memory block size has 16bytes. The

Suppose you have a two-way set associative cache memory that utilizes blocks of two words. While the main memory size is 256 K16 and the employed cache memory could store a total of 1024 words from main memory. Now answer the following questions: A. Formulate all the relative information that is required to construct the cache memory. B. Determine

1. What are the various types of memories used in computer systems, and what are their key differences in terms of performance, capacity, and cost 2. What is cache memory, and how does it improve the performance of the system 3. What is DRAM and how does it differ from SRAM in terms of performance and cost 4. What are the key challenges in

Cache memory is an important component of today's computers. Specify the purpose of eache memory and elaborate why in early computer machines, there was no cache memory at all?

A computer system consists of three level memory organizations. The capacity of direct mapped L1 cache memory is of 4096 bytes where as the 8-way set associative L2 cache memory is of 512 Kbytes. The access time of L1 and L2 cache is 10 nsec and 20 nsec respectively. The Main memory access time is 200 nsec. The hit rate of L1 cache is 75%.

A byteaddressable main memory of size 256MB with blocks of 32 bytes in size. The cache memory can hold up to 512blocks of data in addition to the space for tag and validity bit. Show the fields in a memory address (the name of each part and its length in bits) and the actual size of cache memory in bits (i.e. the storage for data plus tags and

i. Processor A has only L1 cache memory 64Kbyte 16way setassociative. Processor B has only L1 cache memory 64Kbyte 8way setassociative. Which processor has better cache performance Why ii. Which cache memory has a better performance, one with a high or one with a low miss penalty iii. Processor A has L1 cache memory 32Kbyte 8way setassociative and

Define the cache memory size, block size, and associativity as constants (cachesize, blocksize, and associativity). Also, define the replacement policy, which could be selected to be LeastRecentlyUsed (LRU) or random. Calculate the number of sets and blocks per set based on the cache size and associativity (numsets and blocksperset). Initialize

Write the sequence where the Cache memory concept is involved when the cache memory size is 4k lines and the main memory size is 8 k lines.

Addres S 2000H 2001H 2002H 2005H 2006H 2008H 200BH 200CH 200FH 2010H 2011H 2100H 2101H 2103H 2104H 2105H 2108H 2109H Label Data Result FACTORIAL MULTIPLY MULTIPLYLOO P Mnemonic LXI H, 2000H MOV B, M MVI D, 01H CALL MULTIPLY DCR B JNZ FACTORIAL INX H MOV M, D HLT MOVE, B MVI A, 00H ADD D DCR E JNZ MULTIPLYLOO P MOV D, A RET

Explain why the amount of cache memory is less than RAM and the role that locality of reference plays in the amount of cache memory needed?

1-A memory system with cache memory has an 8-bit word address. The direct-mapped mapping technique is used. The cache memory has 8 cache blocks. Each cache block contains 4 words. How many bits are used for the tag field in the cache? 2-A memory system with cache memory has an 8-bit word address. The direct-mapped mapping technique is used. The

Suppose you are assigned a task to design a cache memory that will be helpful to improve the overall processor performance. How you will handle the following issues of page replacement in the cache, cache hit case, cache miss case and change of data by the user in the cache memory in designing the cache memory

What is the major design principle for Cache Memory in computer systems What types of Cache Memory does a modern computer system typically have (hint Cache Level 13) CPU package Processor board CPU chip Unified L2 cache Keyboard controller Split L1 instruction and data caches Graphics controller Unified L3 cache Disk controller Main memory (DRAM)

The application program in a computer system with cache uses 1400 instruction acquisition bus cycle from cache memory and 100 from main memory. What is the hit rate ? If the cache memory operates with zero wait state and the main memory bus cycles use three wait states, what is the average number of wait states experienced during the program

Given that the cache memory of a computer system is ten (10) times faster than the main memory, what is the average access time (Tav) of the memory system if the access time of the main memory is 100ns and the hit rate of the cache memory is 99 CPU L1 Cache Main Mem

Explain the concept of locality of reference, then explain how cache memory exploits this concept to improve the performance of computer

For each one of the following parts, indicate whether it is accessed with virtual address or with physical address: - TLB - Page table - L1 cache memory - L2 cache memory - L3 cache memory - The DRAM installed in your machine (i.e. your 16 GB or 32 GB of RAM)

1. Given a processor using 32bit memory addresses, and a 4 KiB directmapped cache memory that stores 32 bits of data for each address. Approximately what percent of the cache memory is spent on address and data valid information 2. Given a virtual memory of size 1 GiB, physical memory of size 128 KiB, and page size equal to 8 KiB. How many bits

The following is a Decimal representation of the 32-bit memory address that is word-aligned. 12, 720, 172, 8, 764, 352, 760, 56, 724, 176, 744, 1012 Note: Cache memory is fixed at 16 words. 1. 1word/block Cache memory. 2. 2word/block Cache memory 3. 4word/block Cache memory After converting the access memory address into binary, express Tag and

Define the cache memory size and block size as constants (cachesize and blocksize). Initialize the cache memory as a list of 1s (cachememory) to represent an empty cache memory. Initialize the hit and miss counters to 0 (numhits and nummisses). Provide the simulator with a block trace as a list of block addresses to simulate memory accesses.

How can cache memory contribute to modern CPU performance. Give example of the latest cache memory technology available for this case.

List two major security system maintenance concerns and ways to mitigate Please include examples Provide a response to at least 2 peer posts and make sure you provide research evidence to support your arguments.

1. Describe why direct memory access (DMA) is considered an efficient mechanism for performing I/O? 2. What is Context Switching? 3. Explain the concept of a CPUI/O burst cycle? 4. What is a thread pool and why is it used?

Describe each of the following IO interface techniques Programmed IO Interrupt IO Direct Memory Access (DMA) Compare their relative performance when inputting and outputting a block of data.

Data transfer between CPU and the I/O devices may be done in different techniques. Briefly explain to distinguish the THREE (3) possible techniques as follows: Programmed I/O Interrupt-initiated 1/O Direct Memory Access (DMA).

What can be a limitation in providing a controller with physical rather than virtual addresses? This question is about direct memory access (DMA). What problem can arise when the cache is bypassed during access to the DMA controller?

Explain the concepts of Direct Memory Access (DMA) and Direct Cache Access (DCA). Explain the networking protocols IEEE 802.11 (WiFi) and IEEE 802.3 (Ethernet). Give a brief history of the two protocols and their throughput (bitssecond) for each generation.

Write a report on the following ,External Devices I/O Modules Programmed I/O Interrupt-Driven I/O Direct Memory Access Direct Cache Access I/O Channels and Processors External Interconnection Standards 8.9 IBM Enterprise EC12 I/O Structure

A Direct Memory Access (DMA) controller can be used to transfer data from a peripheral to memory, memory to peripheral and from memory to memory. Explain the operation of a DMA controller, using the Analog to Digital Converter (ADC) input as an example.

Describe why direct memory access (DMA) is considered an efficient mechanism for performing I/O. Distinguish between uniform memory access (UMA) and non-uniform memory access(NUMA) systems. What are the advantages and disadvantages of using a microkernel approach? Explain why a modular kernel may be the best of the current operating system design

When do PIC and DMA chip have to interact together? [Important: The question does NOT ask for a definition of DMA and PIC]. (PIC is programmable Interrupt controller; DMA is direct memory access )

List three advantages of using the low power modes in the MSP430. Briefly justify each. Explain what is a bus arbitration transaction What methods can be used for dealing with multiple simultaneous bus requests in a bus arbitration transaction. Explain the concept of Direct Memory Access Describe the three basic modes for supporting direct memory

Explain the steps that happen when a peripheral want to take part in an I/O transaction. Use the figure that illustrates the operation of a system using Direct Memory Access as I/O strategy

Will direct memory access controller interrupt CPU at some times? In a disk quota record, how to count the number of file warnings left? soft block limit minus the hard block limit?

Suppose there are 16 words (4 bytes of words) per block in a 128 KB Direct Memory Access Pocket Memory system. Show how a 32-bit physical memory is mapped on a cache block by drawing the block structure. (Also use the necessary mux, loik door etc.) Determine index and tag lengths? Draw the block structure of the memory system?

Aided with pseudo code (and/or diagrams) of your own, contrast the following 3 I/O schemes, Polled I/O, Interrupt-driven I/O, and Direct memory access

Explain different modes of data transfer Describe about interrupt driven I/O Explain data transfer using direct memory access (DMA). What is DMA? List the advantages and disadvantages of DMA Explain various standards for I/O interfaces

Explain the main inefficiency of programmed I/O. Explain how interrupt-driven I/O makes input/output more efficient than using programmed I/O. Finally, explain how direct memory access (DMA) improves efficiency even more.

Summarize the differences in how does a processor responding to the Interrupt Driven I/O module, and, responding to a Direct Memory Access (DMA) module.

Name five interrupt instructions for the microprocessor. Explain the difference between interrupt mode protected and real mode. How does Direct Memory Access work on a microprocessor.

When the processor wishes to transfer data via direct memory access (DMA), what are the necessary information that the processor needs to send to the DMA module