L4M7 Practice Exam Questions with Answers Whole Life Asset Management Certification

Explanation

It is important to ensure safe working in storage facilities, and access to higher shelves or racking presents a challenge. Lifting at full reach becomes a problem at relative low weight. There can also be danger for other workers who are around someone working at height, from the movement of equipment or dropping stock from a height.

Scissor platforms are used in high-roof warehouses to gain access to lighting, high-racking units and sections of wall and roof.

ORDER PICKER is manual or powered device - some with ride-on capability and some without. This allow for low-level, medium-level and high-level picking of various items. Many are equipped with forks to allow transfer capability of larger picked boxes. Higher-level and narrow or very narrow -aisle versions have the ability to elevate operators on the front platform to higher racking to pick items.

Grabs are designed to hold stock either width-wise or from above. These are either specific devices designed for grabbing materials or are available as an accessory to forklift trucks.

Carousels are space-efficient, rotating devices which allow access to a large range of product from a single location. Designs are variable, with carousels rotating horizontally or vertically until the required items can be retrieved.

Stacker-cranes are designed for the automated storage and retrieval of unit loads, in high-bay warehouses. They travel in aisles equipped with guide rails, electrical supply, data transmission and control systems. To ensure the storage and retrieval functions, the stacker-crane carries out three types of movement : long-travel, lifting and picking.

Explanation

The total cost of ownership would be the sum of all estimated costs.

The costs are as the following:

- Purchase price: $1,000

- Electricity consumption: $200

- Extended warranty: $75

Total expense = $1,000 + $200 +$75 = $1,275. Then subtract the resale price from this sum, the total cost of ownership is $1,025.

Explanation

Tail Spend is derived from ABC Analysis, Class A high value suppliers, Tail Spend is formed from class B & C suppliers, equates to 20% of the total spend, B is Mid Tail and C is Long tail. Effective Spend Analysis and tail spend management, ensures that procurement can focus on creating an optimum and efficient sourcing strategy.

Procurement Spend Analysis

Procurement organisations effectively identify and manage suppliers using a sourcing strategy. Tail suppliers normally have low strategic value and makes the category management, very difficult . SpendAnalysis and Category Management are very closely aligned, Spend Analysis including ABC, provides the category manager, with spend visibility.

Spend Analysis and procurement metrics are used to create category plans, build supplier relation-ships, to maintain service levels and deliver the best possible price and quality for goods and ser-vices bought. The acquisition of Spend data and subsequent Spend Analysis, provides Category Managers access to a well-structured procurement process,

Explanation

Calculating Inventory Turnover (Stock Turn)

As with a typical turnover ratio, inventory turnover details how much inventory is sold over a period. To calculate the inventory turnover ratio, cost of goods (COGS) is divided by the average inventory for the same period.1

Cost of Goods Sold ÷ Average Inventory or Sales ÷ Inventory

In this exercise, the stock turn equal to sales divided by inventory, or 1,000,000:250,000 = 4.

Explanation

Where stock turn (inventory turnover) is low and there are potential risks of redundancy or obsolescence, the buying organisation may adopt vendor owned stock. In this system, a supplier (vendor) maintains a stock of items ready to be used at the point of customer consumption. The supplier owns the stock until it is used by the purchaser; only then is the purchaser invoiced for it.

Just in case and larger safety stock would significantly increase the stock level, which may cause redundancy or obsolescence.

Forrester effect (or Bullwhip effect) is a distribution channel phenomenon in which forecasts yield supply chain inefficiencies. It refers to increasing swings in inventory in response to shifts in customer demand as one moves further up the supply chain.

Explanation

The Harmonized Commodity Description and Coding System, also known as the Harmonized System (HS) of tariff nomenclature is an internationally standardized system of names and numbers to classify traded products. It came into effect in 1988 and has since been developed and maintained by the World Customs Organization (WCO) (formerly the Customs Co-operation Council), an independent intergovernmental organization based in Brussels, Belgium, with over 200 member countries.

The Global Trade Item Number (GTIN) is an identifier for trade items, developed by GS1. Such identifiers are used to look up product information in a database (often by entering the number through a barcode scanner pointed at an actual product) which may belong to a retailer, manufacturer, collector, researcher, or other entity.

The Global Location Number can be used by companies to identify their locations, giving them complete flexibility to identify any type or level of location required.

The International Mobile Equipment Identity (IMEI) is a number, usually unique, to identify 3GPP and iDEN mobile phones, as well as some satellite phones.

Explanation

Dependent demand is the requirement for stock item which is directly related to and therefore de-pendent upon the rate of production (examples are: raw materials, components, energy). The com-ponents in the scenario are dependent demand items.

Independent demand is the requirement for stock item which is not directly related to, and is therefore independent of rate of production.

Explanation

RFID tags have very limited range. The following table was extracted from Wikipedia:

A picture containing text Description automatically generated

RFID tags can be used to do the following:

- Track individual items

- Track boxes of products, cages of products and pallet

- Track containers with multiple loads

- Locate equipment within a building

- Trigger alarms should equipment or stock be removed without authorisation.

RFID tags are made of three different components: an RFID chip, which is an integrated circuit (IC), an antenna, and a substrate. RFID chips are very small integrated circuit incorporating a small memory capability - many are smaller than 2mm square and 2mm thick. Despite its size, many can hold 2000 characters of data. Many retailers simply use the tag as a thick label and print both sides with product information and perhaps a barcode.

It is important to note that there are multiple standards in use for RFID - some of these are standardised for industries but there are also national standards in operations. These standards need to be investigated before investment as not all readers work with all cards. GS1 is a non-for-profit organisation which make the standards for barcodes and RFID.

Explanation

Purchase order lead time (POLT) refers to the number of days from when a company places an order for production inputs it needs, to when those items arrive at the manufacturing plant.

LO 2, AC 2.3

Explanation

Unit load is a term used to describe grouping of different items into a convenient stack or stacks which make them easy to handle and store. Typically this involves pallets and/or the plastic wrap-ping of a load.

Stacker is designed to lift and stack pallets. This one is fully mobile so can move easily around the warehouse. An operator would typically sit or stand while driving like a counterbalanced, reach or straddle lift truck.

A load cell is a type of transducer, specifically a force transducer. It converts a force such as ten-sion, compression, pressure, or torque into an electrical signal that can be measured and standard-ized.

Unit price is the price of a single product or service, used for example when buying several things together to refer to the price of each one.

Explanation

Work in progress is the stock part-way through a manufacturing process; in the service sectors the term is also used for anything between order and delivery.

Explanation

The purposes of stores and warehouses are:

1. Maximum use of space.

2. Ready access to all items.

3. Efficient movement of goods.

4. Effective utilization of labour & equipment’s

5. Maximum protection of items

6. Good-house-keeping.

Explanation

MRP I was some of the first business software to be widely adopted during the 1970s. Manufacturers sought these systems in order to improve efficiency and accuracy when it came to basic processes such as production scheduling and inventory management.

By the 1980s, manufacturers realized they needed software that could also tie into their accounting systems and forecast inventory requirements. Enter MRP II, which included these integrations in addition to all the capabilities offered by MRP I. Enterprise resource planning (ERP) software features—which we’ll cover later on—are included in the following table for comparison.

Graphical user interface Description automatically generated

Explanation

Void filling is the general term giving to the challenge of filling the space left in a box after the products have been packed. This means that if there is no void filling material, the product inside can move around and could be damaged. Materials to fill voids to secure contents

• Polystyrene (PS) is a synthetic aromatic hydrocarbon polymer made from the monomer known as styrene.[5] Polystyrene can be solid or foamed. General-purpose polystyrene is clear, hard, and rather brittle. It is an inexpensive resin per unit weight. It is a rather poor barrier to oxygen and water vapour and has a relatively low melting point.[6] Polystyrene is one of the most widely used plastics, the scale of its production being several million tonnes per year.[7] Polystyrene can be naturally transparent, but can be coloured with colourants. Uses include protective packaging (such as packing peanuts and CD and DVD cases), containers, lids, bottles, trays, tum-blers, disposable cutlery[6] and in the making of models. Polystyrene is generally considered to be non-biodegradable. However, certain organisms are able to degrade it, albeit very slowly.

• Chips made of bio-degradable materials

• Absorbent and fire-resistant material

• Shredded paper, cardboard or wood-Based material

• Paper or cardboard rolls

• Bubble wrap

• Air-filled cushions

• Self expanding foam

Straps are used to group items into unit load. Polypropylene or polyester are the materials most often used. The wider the strap, the stronger it will be. Using more than one strap and straps for length and width will create a strong place for stock.

Explanation

There are several methods to reduce the acquisition costs in procurement. L4M7 study guide lists the following methods:

- Buyer discretionary spend

- 'User buying'

- Vendor managed inventory (VMI)

- Two-bin Kanban

- Product catalogue

- e-Procurement techniques, including some systems such as ERP, procure-to-pay (P2P), e-requisition, e-tendering, etc.

- Procurement cards

Explanation

Total productive maintenance (TPM) is an innovative concept in the manufacturing industry that evolved from the idea of preventive maintenance to adopt practices of productive maintenance, maintenance prevention, and reliability Engineering. What we now refer to as TPM, has become aningenious approach to achieve overall equipment effectiveness by involving the workforce behind the machines (i.e. the operators).

8 pillars of TPM

1) 5S - Sort, straighten, shine, standardize, and sustain

Just like a physical structure starts with a grounded framework, building a strong TPM process requires a strong foundation in the form of the principles of 5S. This is a workplace organization method that is simplified into 5 basic steps:

Sort tools, equipment, and materials to identify which of these can be discarded

Straighten and set things in proper order to reduce unnecessary motion and efficiently travel be-tween working groups and locations

Shine refers to performing necessary housekeeping to clean up the work area

Standardize and schedule activities to systematically form the habits to keep the workplace orga-nized

Sustain the process and principles for long-term applications

The 5S approach provides a systematic approach to cleaning the workplace, thereby uncovering underlying problems and challenges.

2) Autonomous maintenance

Maintenance tasks and caring for equipment should start with the people using the equipment. The empowerment of operators to work on small maintenance tasks effectively allows the maintenance teams to focus on more specialized assignments.

3) Continuous improvement

Also known as the Japanese term Kaizen, Continuous Improvement promotes the attitude of pro-gressing towards zero losses and zero defects. Through small but continual tweaks to processes, the overall effectiveness and efficiency of the organization is developed.

4) Planned maintenance

Planned maintenance activities are essential to the prevention of equipment breakdown. Planned maintenance is performed by periodically evaluating the condition of equipment to proactively prevent deterioration and mechanical failures.

5) Quality maintenance

To ensure the satisfaction of the customer, manufacturing processes aim for zero-defect production. Standards for superior quality, and checks on whether the standards are being met, should be in place. The goal of quality maintenance is to identify any possible causes of deviations from zero-defect production.

6) Training

The idea of TPM is that everyone does their part to contribute to the overall productivity of the production process. In order to achieve optimum performance, and to build each member’s competence, proper training is required to equip each one with the theoretical and practical know-how of working with machines and equipment.

7) Office TPM

A key role that is often overlooked is the administrative department that works behind the scenes. Like the rest of the production teams and processes, the management and administrative functions are also subject to productivity improvement. Tins includes identifying and eliminating losses, and contributing to the overall performance of the plant.

8) Safety, health, and environment

The last of the eight pillars focuses on creating a safe workplace. The essence of this pillar is real-ized when actively applied to each of the other pillars. The successful implementation of this pillar will contribute to a secure and hazard-free workplace.

Explanation

In the scenario, one of the requirements for the new software is that the new one will interface with current system. Compatibility testing would be the most appropriate test here.

There are also other acceptance tests that are mentioned in L4M7 study guide:

- Health and safety test aims at establishing new health and safety routines, providing guidance notices and documentation and ensuring designed-in safety in operation.

- Stress testing (sometimes called torture testing) is a form of deliberately intense or thorough testing used to determine the stability of a given system, critical infrastructure or entity. It involves testing beyond normal operational capacity, often to a breaking point, in order to observe the results.

- A dry run (or a practice run) is a testing process where the effects of a possible failure are inten-tionally mitigated. For example, an aerospace company may conduct a "dry run" test of a jet's new pilot ejection seat while the jet is parked on the ground, rather than while it is in flight.

The usage of "dry run" in acceptance procedures (for example in the so-called FAT = factory ac-ceptance testing) is meant as following: the factory – which is a subcontractor – must perform a complete test of the system it has to deliver before the actual acceptance by customer.

Explanation

The amount of closing stock (properly valued) is used to arrive at the cost of goods sold in a periodic inventory system with the following calculation:

Opening stock + Purchases - Closing stock = Cost of goods sold

Explanation

A cost-benefit analysis is a process businesses use to analyze decisions (such as capital investment). The business or analyst sums the benefits of a situation or action and then subtracts the costs associated with taking that action.

A cost-benefit analysis (CBA) should begin with compiling a comprehensive list of all the costs and benefits associated with the project or decision.

The costs involved in a CBA might include the following:

- Direct costs would be direct labor involved in manufacturing, inventory, raw materials, manufacturing expenses.

- Indirect costs might include electricity, overhead costs from management, rent, utilities.

- Intangible costs of a decision, such as the impact on customers, employees, or delivery times.

- Opportunity costs such as alternative investments, or buying a plant versus building one.

- Cost of potential risks such as regulatory risks, competition, and environmental impacts.

Benefits might include the following:

- Revenue and sales increases from increased production or new product.

- Intangible benefits, such as improved employee safety and morale, as well as customer satisfaction due to enhanced product offerings or faster delivery.

- Competitive advantage or market share gained as a result of the decision.

An analyst or project manager should apply a monetary measurement to all of the items on the cost-benefit list, taking special care not to underestimate costs or overestimate benefits. A conservative approach with a conscious effort to avoid any subjective tendencies when calculating estimates is best suited when assigning a value to both costs and benefits for a cost-benefit analysis.

Finally, the results of the aggregate costs and benefits should be compared quantitatively to deter-mine if the benefits outweigh the costs. If so, then the rational decision is to go forward with the project. If not, the business should review the project to see if it can make adjustments to either increase benefits or decrease costs to make the project viable. Otherwise, the company should likely avoid the project.

Explanation

There are two main processes of recycling – open loop recycling and closed loop recycling.

Open Loop Recycling

Open loop recycling is a method that delays disposal by converting manufactured goods and spent materials into both new raw materials, which can be used for a manufacturing purpose, as a fuel source for a different manufacturing process and waste products.

Typically, materials recycled through open-loop recycling will be used for purposes different from their original purpose.

This means that the input into the recycling process is converted to a new raw material, which can be used as an input into another manufacturing process.

Materials in an open loop recycling process are treated using various forms of treatment including heat, chemical reactions, or physical crushing.

Closed Loop Recycling

Closed loop recycling is a process where waste is collected, recycled and then used again to make the same product it came from. This process is restorative and regenerative by design and aims to keep materials at their highest utility and value always.

Closed loop recycling is focused on resource sustainability, which means that recycling of a material can be done indefinitely without degradation of properties. In this case, conversion of the used product back to raw material allows repeated making of the same product, which helps hazardous waste generators reduce carbon footprint and achieve corporate sustainability initiatives.

Closed-loop recycling is common in specialized industries, such as the computer and battery industries, which use expensive or complex goods that cannot easily be broken down post-consumption into constituent materials.

A prime example of a closed-loop recycling process is the recycling of aluminum cans. Aluminum can be recycled to form new cans with little material degradation or waste creation.

Explanation

Master production schedule (MPS) plans items that have “direct” demand, or “independent de-mand.” With independent demand, the demand comes from sales orders, service orders, or fore-casts, and the demand comes directly from customer—or forecasted—requirements. It is the list that provides the timing of the production schedule and shows how much each machine can produce, how many shifts are used, etc.

A bill of materials (BOM) is a comprehensive inventory of the raw materials, assemblies, subas-semblies, parts and components, as well as the quantities of each, needed to manufacture a product.

Explanation

A powerful benefit of MRP system is the capacity to produce exception reports, which show deviations from normal planning and performance. These enable anomalies to be investigated with a view to improve future forecasting.

Material requirement planning is an electronic system for combining the following:

- Known demand

- Forecast demand. Known demand and forecasted demand are shown in master production schedule.

- Bill of materials for the final product

- Inventory records

Explanation

Just-in-time (JIT) purchasing is a systems approach for developing and operating the purchasing function. JIT purchasing along with the total quality management in many industries has been suc-cessful in reducing inventory and increasing the overall effectiveness of purchasing function and hence the productivity of manufacturing.

The just-in-time objectives of eliminating waste can be summarised in the 'five zeros: zero defects, zero set-up times, zero inventories, zero handling and zero lead times.

The correct answer should be 'In JIT purchasing, raw materials (or goods) are purchased so that products are delivered just as needed for production or sales' because it expresses that upstream activity (purchasing) only occurs as the downstream activity (production or sales) triggers.

Explanation

There are different types of maintenance that organizations use to increase the uptime of their assets and utility of their facilities. Based on an organization’s budget, amount of resources, level of combined experience, and maintenance goals, one or more maintenance types are used.

Proactive types of maintenance

Preventive maintenance

Preventive maintenance is the most popular type of proactive maintenance. To start conducting preventive maintenance tasks (PMs), an organization does not need to purchase new technology if it already has a CMMS. This is not the case with predictive maintenance which requires condition monitoring sensors and new software integrations. However, with preventive maintenance, the or-ganization runs the risk of over-scheduling maintenance tasks because tasks are scheduled based on time rather than actual conditions. That said, preventive maintenance achieves 12% to 18% cost savings over reactive maintenance.

Predictive maintenance

Predictive maintenance (PdM) is what savvy maintenance teams aspire to have or are already im-plementing. The major barrier to PdM is the time it takes to implement rather than the cost of the technology itself. For instance, a vibration sensor that can identify imbalance, misalignment, and resonance issues only costs around $200. But the time it takes to install, integrate with other maintenance software, and adopt a culture around is not time that all organizations are willing to allocate. For those that do allocate the time, PdM provides an 8% to 12% cost savings over preventive maintenance.

Condition-based maintenance

Condition-based maintenance (CBM) is at the core of predictive maintenance but, on its own, does not rely on technology to determine the condition of an asset like PdM does. For instance, a manager may instruct an operator to monitor the condition of an asset and submit a work request when a specific condition is met. This approach may, or may not be, as reliable as predictive maintenance. An organization that has highly-trained operators may spot hazardous conditions better than an organization using PdM technology that doesn’t know what to look for.

Scheduled maintenance

Scheduled maintenance includes work that is scheduled on a calendar for completion. The most common type of scheduled maintenance is calendar-based preventive maintenance tasks. These are scheduled well in advance of completion. For instance, an asset with a monthly PM has twelve instances of scheduled maintenance in a given year. However, just because maintenance is scheduled does not mean it’s planned. Planned maintenance implies that a maintenance planner or other type of maintenance worker has fully planned for parts, materials, skills, and other resources to be available during the scheduled time window.

Planned maintenance

Planned maintenance is work that’s prepared for in advance of it taking place. According to an UpKeep survey, it’s also the most popular key performance indicator (KPI) to track. A high planned maintenance percentage indicates that a maintenance team will have resources available to complete work for the time/day the work is scheduled for. Having a high planned maintenance percentage also helps boost other maintenance KPIs like schedule compliance. More planned maintenance means more successful completion of scheduled maintenance.

Routine maintenance

Routine maintenance is a form of time-based maintenance and preventive maintenance, though some organizations differentiate between routine maintenance and preventive maintenance. They use the latter for smaller tasks (i.e. cleaning) performed at higher frequencies (hourly, daily) and the former for larger tasks (i.e. inspections) performed at lower frequencies (weekly, monthly, annually). Additionally, routine maintenance is performed by operators, janitors, and other staff member while preventive maintenance is performed by technicians. Non-routine maintenance includes maintenance that is performed reactively or only when needed based on an asset’s conditions.

Reactive types of maintenance

Emergency maintenance

Emergency maintenance occurs when an asset requires immediate attention in order to keep a facility operational or safe. This is the most reactive and intrusive type of maintenance as it pulls technicians away from other jobs and lowers schedule compliance. In extreme circumstances, emergency maintenance can set an organization back days depending on the scope of the repair, available parts, and the asset’s level of importance. To reduce the amount of emergency maintenance that is both unplanned and unscheduled, organizations adopt various forms of proactive maintenance.

Corrective maintenance

Corrective maintenance is inherently part of emergency maintenance because, when there is an emergency, something needs corrected or fixed. In this way, corrective maintenance is mostly reactive. However, it can also be proactive. If an asset with a condition monitoring sensor detects an issue, a workorder is created and a technician is sent to correct it. Similarly, preventive maintenance is considered corrective maintenance if there is an issue to fix. This is rare though as PMs are often conducted when an asset is in good working order.

Other types of maintenance

Deferred maintenance

Deferred maintenance includes repairs and inspections that are put into a backlog due to limited budget and resources. While deferring maintenance saves money up front, the costs of not performing important maintenance compounds at 7% annually. Rising costs come from fines resulting from missed inspections and unscheduled downtime that brings production to a standstill. By far, deferred maintenance and emergency maintenance are the least desired types of maintenance.

Total productive maintenance

Total productive maintenance (TPM) is the broadest type of maintenance that targets more than the assets that need maintained. It also aims to improve employee satisfaction and overall morale in the workplace, specifically in manufacturing plants. TPM does this by increasing overall equipment effectiveness (OEE) and the amount of planned maintenance. More planned work means more workers have the resources they need to do their job, which means higher levels of satisfaction. TPM also leverages machine operators to participate in maintenance and take ownership of their equipment.

Explanation

According to L4M7 study guide, acquisition costs in procurement are the costs associated with the activities involved in a purchase. A buying organisation incurs acquisition costs in low-value purchases as well as high-value purchases. The following purchases tend to have lower acquisition costs:

- Straight re-buy from a current supplier

- Purchase of standard catalogued products

Otherwise, any purchases of high value, high-risk items generally require greater attention of buying organisation and thus, they are likely to have higher acquisition costs. Spot purchase of a technically complexed machinery, Purchase of ERP system and Procurement of construction projects are examples of high-value, high-risk purchases.

Explanation

The normal breakdown in a manufacturing organisation would be raw materials, components, work in progress and finished goods.

Following are the different types of inventory:

Raw materials are the basic materials that a manufacturing company buys from its suppliers, and that is used by the former to convert them into the final products by applying a set of manufacturing processes. For example, aluminum scrap is the raw material for a company that produces aluminum ingots. Flour is the raw material for a company that produces bread or pizza. Similarly, metal parts and ingots are the raw materials bought by a company that manufactures cars, and crude oil is the raw material for an oil refinery.

Work in progress inventory can also be called semi-finished goods. They are the raw materials that have been taken out of the raw materials store and are now undergoing the process of their conversion into the final products. These are the partly processed raw materials lying on the production floor. And they have also not reached the stage where they have been converted into the final product.

Finished goods are indeed the final products obtained after the application of the manufacturing processes on the raw materials and the semi-finished goods discussed above in the article. They are saleable, and their sale contributes fully to the revenue from the core operations of the company.

Explanation

The International Standard Book Number (ISBN) is a numeric commercial book identifier which is intended to be unique. Publishers purchase ISBNs from an affiliate of the International ISBN Agency. ISBN is standardised by ISO 2108:2017. ISBN is an example of industry standard code as it applies to commercial books around the world.

Check digits are additional numbers or characters added to codes that a computer uses to verify the number is valid. The intention is to reduce the likelihood of miskeying an item and hitting an alternative live item. More often, a system is devised which a computer can calculate using combination of numbers.

Own product code system: an organisation will use its own product code system. This has the ad-vantage that the organisation can construct a code that is effective and fits with its software and variety of items covered.

The Harmonized Commodity Description and Coding System, also known as the Harmonized System (HS) of tariff nomenclature is an internationally standardized system of names and numbers to classify traded products. It came into effect in 1988 and has since been developed and maintained by the World Customs Organization (WCO) (formerly the Customs Co-operation Council), an independent intergovernmental organization based in Brussels, Belgium, with over 200 member countries.

Explanation

ABC classifications are applied to stock and its management is based loosely on the Pareto princi-ple, better known as the 80/20 rule.

The likely outcome of analysis of inventory (value importance):

- Category A - about 20% of the stock items account for about 80% of the total inventory value. Items in category A have the highest value.

- Category B - about 30% of items account for about 15% of total inventory value

- Category C - the remaining 50% of items account for 5% of the total inventory value

Explanation

JIT, often referred to as the Toyota production system (TPS), originated in Toyota’s manufacturing plants in Japan in the early 1970s. It was first introduced by the organisation's owner, Taiichi Ohno. The prime goal of JIT is the achievement of zero inventories.

The just-in-time objectives of eliminating waste can be summarised in the 'five zeros: zero defects, zero set-up times, zero inventories, zero handling and zero lead times.

Explanation

In the scenario, the buying organisation (investment bank) must conduct various types of testing before the deployment of the software system. These tests can be functional testing, factory ac-ceptance testing and/or user acceptance testing. The costs for all these types of testing are classified as acquisition costs with regards of total cost of ownership.

Explanation

Two-dimensional (2D) barcodes look like squares or rectangles that contain many small, individual dots. This has many different types (i.e. Data matrix, QR codes, Aztec code,...) and several different standards in use (i.e. GS1 standards, ISO/IEC 18004:2015). It can be substituted for 1D barcode, but it has the capability to hold a larger amount of data. For examples, GS1 Data Matrix can contain 3116 Numeric characters or 2335 Alphanumeric characters while GS1-128 barcode has maximum capacity of 48 characters.

Like 1D barcodes, 2D barcodes are also machine-readable with dots/squares and spaces. They have symbology like this:

Qr code Description automatically generated

Since the code is two dimensional, conventional laser scanner can't read it. 2D barcodes require imaging scanner to read.

2D barcodes can be also used for different purposes throughout the supply chain: identifying prod-ucts/SKU (single unit, packaged or pallet), identifying content of a purchase order or delivery, identifyingthe batch number from which the item originates, identifying the manufacturer, country of origin etc, tracking status of an order, shipment or delivery

Explanation

The product code is often the key to obtaining documentation relating to products.

Product codes are often use to link to internal processes. Some computerised inventory systems trigger alerts when specific items or volume are ordered - this could be an out-of-stock warning or potential volume errors.

In many cases, an organisation will use its own product code system. The organisation constructs a code that is effective and fits with its software and the variety of items covered. So these codes may or may not comply with any international standards (such as GS1 specifications, ISO standards, etc.). As organisations make up the code themselves, the codes may look identical to others. For example, SKU414675 reveals that it is used for many items, including the following:

- A UK wholesaler's six-pack of branded cola

- An Australian snack food

- UK flower seeds

- An Italian desk sold in Japan

- A Brazilian light fitting

Explanation

The bullwhip effect (or Forrester effect) is a distribution channel phenomenon in which forecasts yield supply chain inefficiencies. It refers to increasing swings in inventory in response to shifts in customer demand as one moves further up the supply chain.

Seasonal demand: consumer interest in purchasing particular products only during a specific peri-od within the calendar year.

OPITZ is a coding system used to form Groups in Group Technology philosophy of Manufactur-ing.

The Pareto Curve is the shape created when the bars of a Pareto Chart are progressively summed and the points joined together. The final curve ends at 100% of items in the chart, which means that you can then draw a line across at 80% and 'bounce' it down to find the bar which, when combined with all bars to its left, will give 80% of all items.

Explanation

The design of a building should consider the advantages of natural light as this can reduce the cost of artificial lighting and improve the environmental performance of the building. Daylight entering the building can also help reduce heating costs. Unfortunately some stocks react badly to direct sunlight, and some stock reacts badly to extreme of temperature or may require a specific temperature for storage. Some stock may require a warmer temperature than the ambient temperature and other stocks may require cooler temperature. For example, fabric and garment are sensitive to direct sunlight as ultraviolet light catalyses a reaction between the water present in all fabrics and atmospheric oxygen to create hydrogen peroxide. This is a bleaching agent and breaks down the chemical bonds that give dyes their colour.

Explanation

Obsolescent stock is stock, usually finished goods, which is in good condition and satisfactory working but for which demand is irreversibly falling towards zero. Once this demand reaches zero the stock canbe considered 'obsolete'. It cannot be used or sold in its current state. Food ingredients (like candy canes) which are out of date are another example.