S7.12 The three-station work cell at Pullman Mfg., Inc. is illustrated in Figure S7.8. It has two machines at station 1 in par- allel (i.e., the product needs to go through only one of the two machines before proceeding to station 2). a) What is the throughput time of this work cell? b) What is the bottleneck time of this work cell? c) What is the bottleneck station?d) If the firm operates 8 hours per day, 6 days per week, what is
the weekly capacity of this work cell?

Station 1 Machine A

20units/hr

Station 1 Machine B

20 units/hr

Station 2

12 units/hr

Station 3

8 units/hr

Consider a file currently consisting of 200 blocks. Assume that the file control block (and the index block, in the case of indexed allocation) is already in memory. Calculate how many disk I/O operations are required for contiguous, linked, and indexed (single-level) allocation strategies, if the following conditions hold. In the contiguous allocation case, assume that there is no room to grow in the beginning, but there is room to grow in the end. Assume that the block information to be added is stored in memory. For linked allocation, there is a tail pointer pointing to the last node.

1. The block is added at the beginning
2. The block is added at the end
3. The block is removed from the beginning
4. The block is removed from the end

More Assumptions:

• Read one whole block = one I/O operation

• Write one whole block = one I/O operation

• For linked allocation, a file allocation table (FAT) is not used, i.e., only the address of the starting block is in memory

• All preparation of a block (including putting in the data and any link value) is done in main memory and then the block is written to disk with one write operation

• The file control block does not have to be written to disk after a change (this is typical where many operations are performed on a file)

• At most one index block is required per file and it does not have to be written to disk after a change.

• For contiguous, linked and indexed allocations, assume that no I/O operations are necessary to add a freed block to the free list

Note that while calculating the total number of I/O operations for each, also indicate how many came from r(read) and w(write).

A large-scale bakery is laying out a new production process for its packaged bread, which it sells to several grocery chains. It takes 12 minutes to bake the bread. How large of an oven is required so that the company is able to produce 4200 units of bread per hour (measured in the number of units that can be baked simultaneously)?

Consider the baggage check-in process of a small airline. Check-in data indicate that from 9 a.m. to 10 a.m., 240 passengers checked in. Moreover, based on counting the number of passengers waiting in line, airport management found that the average number of passengers waiting for check-in was 30. How long did the average passenger have to wait in line?

A company is experiencing an increasing number of systems that are locking upon Windows startup.

The security analyst clones a machine, enters into safe mode, and discovers a file in the startup process that runs Wstart.bat.

@echo off

asdhbawdhbasdhbawdhb

start notepad. exe

start notepad. exe

start calculator. exe

start calculator. exe

goto asdhbawdhbasdhbawdhb

Given the file contents and the system's issues, which of the following types of malware is present?

A. Rootkit

B. Logic bomb

C. Worm

D. Virus

A copy machine is available 24 hours a day. On a typical day, the machine produces 88 jobs. Each job takes about 3 minutes on the machine, 2 minutes of which is processing time and 1 minute is setup time (logging in, defining the job). About 23 Percent of the jobs need to be reworked, in which case the setup time and the processing time have to be repeated. The remainder of the time, the equipment is idle. What is the OEE of the equipment?

Which of the following best describes the primary key?

Select one:

a. It's the encryption key that gets exchanged first with another party.

b. It's the password that needs to be entered to open the database.

c. It's the first item that is entered into the database on a screen.

d. It's a field that uniquely identifies the record.

Write a C or C++ program A6p2.c(pp) that accepts one command line argument which is an integer n between 2 and 4 inclusive. Generate 60 random integers between 1 and 49 inclusive and store them in a 5 by 12 two dimensional integer array (e.g.,int a[5][12];). Use pthread to create n threads to square all 60 array elements. You should divide this update task among the n threads as evenly as possible. Print the array both before and after the update separately as 5 by 12 matrices.

Note: Must use pthread to divide the update task among the threads.

QUESTION 1 Every business idea is a business opportunity True/ False

QUESTION 2 A business concept which is feasible is a business opportunity True/ False

QUESTION 3 A business concept resales to a gap in the market which is to be filed by an entrepreneur True /False

QUESTION 4 An innovation which is continuous marginally destroys the previous product True /False

QUESTION 5 An innovation which is dynamically continuous substantially destroys the previous product True /False

QUESTION 6 An innovation which is discontinuous completely destroys the previous product True /False

QUESTION 7 After preparing business plan you have to prepare opportunity assessment plan True/ False

QUESTION 8 After preparing the business plan you have to prepare opportunity assessment plan True/ False

QUESTION 9 Business idea is a concept before ascertaining the feasibility as a business oportunity True/ False

QUESTION 10 Market research is to ascertain the dissatisfied wants of customers True /False