10. Consider a file F to be shared by N processes. Each process i has ID i (1 <= i <= N). The file can be accessed concurrently by multiple processes, if the sum of the IDs of these processes is less than or equal to M. a) Write a monitor that will control access to the file. That means the monitor will implement two functions, request() and release(), that will be called by a process that would like to access the file. You also need to define the monitor variables required for the solution. A process will call the request() function before accessing the file and release() function when it has finished accessing the file. b) This time implement the request() and release() functions using mutex and condition variables (like POSIX Pthreads mutex and condition variables). You need to define some global variables as well to implement these functions.
Answers
The pseudocode that controls access to the file is coded below:
a) The pseudocode that controls access to the file based on the given conditions:
monitor FileAccessControl:
condition canAccess
int sumOfIDs
int maxSumOfIDs
procedure request(processID):
while (sumOfIDs + processID > maxSumOfIDs):
wait(canAccess)
sumOfIDs += processID
procedure release(processID):
sumOfIDs -= processID
signal(canAccess)
In the above monitor implementation, the `request()` function checks if the sum of the current IDs plus the ID of the requesting process exceeds the maximum allowed sum (`maxSumOfIDs`). If it does, the process waits on the `canAccess` condition variable until it can access the file. Once the condition is satisfied, the process adds its ID to the sum of IDs.
The `release()` function subtracts the ID of the releasing process from the sum of IDs and signals the `canAccess` condition variable to wake up any waiting processes.
b) Here's an implementation of the request() and release() functions using mutex and condition variables:
import threading
mutex = threading.Lock()
canAccess = threading.Condition(mutex)
sumOfIDs = 0
maxSumOfIDs = M # Assuming M is defined globally
def request(processID):
global sumOfIDs
mutex.acquire()
while sumOfIDs + processID > maxSumOfIDs:
canAccess.wait()
sumOfIDs += processID
mutex.release()
def release(processID):
global sumOfIDs
mutex.acquire()
sumOfIDs -= processID
canAccess.notify_all()
mutex.release()
The condition variable (`canAccess`) is associated with the mutex and used for signaling and waiting. The global variables `sumOfIDs` and `maxSumOfIDs` are defined to keep track of the current sum of IDs and the maximum allowed sum, respectively.
The `request()` function acquires the mutex, checks the condition, and waits on `canAccess` if the condition is not met.
The `release()` function acquires the mutex, subtracts the ID of the releasing process from the sum of IDs, notifies all waiting processes using `notify_all()`, and releases the mutex.
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Related Questions
What dimensions are used when measuring the area of a building
Answers
Answer:According to NEC 220.12,
“the floor area shall be calculated from outside dimensions of the buildings, dwelling unit, or other area involved.
The area should not include open porches, garages or unused or unfinished spaces not adaptable for future use”.
pa brainliest plss..thankss
Explanati
Hope that helps:)
When your workplace obtains new materials, you should add them to the chemical list:
Answers
Answer:
immediately
Explanation:
I need to find the Current Flow through each resistor in this Combo Circuit, so far I have gotten that the current total is .5A.
and the Resistance total is 10ohms.
Can anyone please help!
Answers
To find the current flow through each resistor in a combo circuit, you need to use Ohm's law and the principles of electrical circuits.
What is Combo Circuit?Ohm's law states that the current flowing through a circuit is directly proportional to the voltage applied and inversely proportional to the resistance of the circuit. This means that the current flowing through each resistor in the circuit can be calculated by dividing the total voltage applied by the total resistance of the circuit.In your case, you have already determined that the total current flowing through the circuit is 0.5A and the total resistance of the circuit is 10 ohms. Using these values, you can calculate the current flowing through each resistor in the circuit by dividing the total voltage applied by the resistance of each individual resistor.For example, if the circuit contains two resistors with resistances of 5 ohms and 3 ohms, respectively, the current flowing through each resistor would be 0.5A * (5 ohms / 10 ohms) = 0.25A for the 5 ohm resistor and 0.5A * (3 ohms / 10 ohms) = 0.15A for the 3 ohm resistor.In general, the current flowing through each resistor in a combo circuit can be calculated by dividing the total current flowing through the circuit by the number of resistors in the circuit, and then dividing the result by the resistance of each individual resistor. This will give you the current flowing through each resistor in the circuit.To learn more about Combo Circuit refer to:
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a commercial refrigerator with r-134a as the working fluid is used to keep the refrigerated space at -35 c by rejecting waste heat to cooling water that enters the condenser at 18 c at a rate of 0.25 kg/s and leaves at 26 c. the refrigerant enters the condenser at 1.2 mpa and 50 c and leaves at the same pressure subcooled by 6 c. if the compressor consumes 3.3 kw of power , determine (a) the mass flow rate of the refrigerant, b) the refrigerant load, c) the cop, and d) the minimum power input to the compressor for the same refrigeration load.
Answers
At 1.2mpa pressure and 50c
What is pressure?
By pressing a knife against some fruit, one can see a straightforward illustration of pressure. The surface won't be cut if you press the flat part of the knife against the fruit. The force is dispersed over a wide area (low pressure).
a)Mass flow rate of the refrigerant
Therefore h1= condenser inlet enthalpy =278.28KJ/Kg
saturation temperature at 1.2mpa is 46.29C
Therefore the temperature of the condenser
T2 = 46.29C - 5
T2 = 41.29C
Now,
d)power consumed by compressor W = 3.3KW
Q4 = QL + w = Q4
QL = mR(h1-h2)-W
= 0.0498 x (278.26 - 110.19)-3.3
=5.074KW
Hence refrigerator load is 5.74Kg
(COP)r = 238/53
(Cop) = 4.490
Therefore the above values are the (a) mass flow rate of the refrigerant, b) the refrigerant load, c) the cop, and d) the minimum power input to the compressor for the same refrigeration load.
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Pls answer and I will give a like!
Answers
Answer:
a
Explanation:
5.5 Consider the SQL statement:
SELECT id, forename, surname FROM authors WHERE forename = 'john' AND surname = 'smith'
a. What is this statement intended to do?
b. Assume the forename and surname fields are being gathered from user-supplied input, and suppose the user responds with:
Forename: jo'hn
Surname: smith
What will be the effect?
c. Now suppose the user responds with:
Forename: jo'; drop table authors--
Surname: smith
What will be the effect?
Answers
If user-supplied input contains certain characters or SQL injection attempts, it can result in errors or potential data loss. It is important to handle user input securely to prevent such vulnerabilities.
a. The given SQL statement intends to retrieve the data from the authors table where the author's first name is 'john' and the author's last name is 'smith'.
b. Assume the forename and surname fields are being gathered from user-supplied input, and suppose the user responds with: Forename: jo'hn Surname:
The above query will generate an error because the single quote will interfere with the SQL syntax. So, it will not retrieve any data and result in an error.
The error could be something like: ERROR: Unclosed quotation mark after the character string 'john'.c. Now suppose the user responds with: Forename: jo'; drop table authors--Surname: smith
The given input will exploit a SQL Injection attack. SQL Injection is a hacking technique that uses a vulnerability in the application's software to execute malicious code. In this case, if the user inputs jo'; drop table authors-- in the forename and smith in surname, then it can lead to data loss.
The SQL command will look like this: SELECT id, forename, surname FROM authors WHERE forename = 'jo'; drop table authors--' AND surname = 'smith';This query will drop the authors table, and all the data from the table will be lost.
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Technician A says ABS systems provide superior directional stability when the brakes are applied while turning a corner. Technician B says ABS systems provide superior braking when driving on loose snow. Who is correct
Answers
Both technicians A and B are partially correct, because it's important to note that ABS is not a foolproof solution in all driving situations and should not be relied upon as a substitute for proper driving techniques and caution.Technician A is partially correct in that ABS (Anti-lock Braking System) can improve directional stability. Technician B is also partially correct in that ABS can improve braking performance on loose snow.
Both technicians are partially correct, but neither is entirely accurate.
Technician A is partially correct in that ABS (Anti-lock Braking System) can improve directional stability when the brakes are applied while turning a corner, especially on slippery or uneven road surfaces. The system can prevent the wheels from locking up and skidding, which can cause the vehicle to lose control. However, it's important to note that ABS does not necessarily guarantee superior directional stability in all situations, and the driver should still exercise caution and proper driving techniques when turning.
Technician B is also partially correct in that ABS can improve braking performance on loose snow, as the system can help prevent the wheels from locking up and losing traction. However, other factors such as tire type and condition, road gradient, and vehicle weight distribution can also impact braking performance on loose snow.
Therefore, both technicians are partially correct, but it's important to note that ABS is not a foolproof solution in all driving situations and should not be relied upon as a substitute for proper driving techniques and caution.
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Argue why electrode therapy is NOT the most effective treatment for brain disorders, and recommend an alternative treatment.
Answers
Answer:
Due to risk of damaging of brain.
Explanation:
The electrode therapy is not the most effective treatment for brain disorders because there are various other treatments which can treat the brain disorder without causing damage to the brain. electrode therapy greatly damaged the brain instead of treatment of brain disorder. Medication is the best way to treat brain disorder so that's why electrode therapy is not considered as the most effective treatment for brain disorders, and the doctors recommend an alternative treatment.
6 Section 1
Whole Numbers
18. An illustration of a shaft is shown. Find the lengths, in millimeters, of A,
B, C, and D.
Answers
A) 35 + 21 + 18 + 23 + 11
B) 23 + 11
C) 35 + 21
D) 21 + 18 + 23 + 11
1.20 Three wooden planks are fastened together by a series of bolts to form a column. The diameter of each bolt is 12 mm and the inner diameter of each washer is 16 mm, which is slightly larger than the diameter of the holes in the planks. Determine the smallest allowable outer diameter d of the washers, knowing that the average normal stress in the bolts is 36 MPa and that the bearing stress between the washers and the planks must not exceed 8.5 MPa.
Answers
check photo solve
check photo solve
check photo solve
the smallest allowable outer diameter (d) of the washers is approximately 50.82 mm, considering the average normal stress in the bolts and the bearing stress between the washers and the planks.
What is the the average normal stressThe average normal stress in the bolts is given as 36 MPa, which is equal to 36 N/mm².
So, σ_avg = 36 N/mm² = 36 MPa
The bearing stress between the washers and the planks must not exceed 8.5 MPa, which is equal to 8.5 N/mm².
So, σ_bearing = 8.5 N/mm² = 8.5 MPa
Now, using the relationship between the bearing stress and the average normal stress:
σ_bearing = σ_avg * (d_bolt / d_washer)
8.5 = 36 * (12 mm / d_washer)
Now, solve for d_washer:
d_washer = 36 * 12 mm / 8.5
d_washer = 50.82 mm
Since the washer's inner diameter is 16 mm, the difference between the inner and outer diameters of the washers is 2 * t (the thickness of the washers).
So, d_washer - 16 mm = 2 * t
t = (d_washer - 16 mm) / 2
t ≈ (50.82 mm - 16 mm) / 2
t ≈ 17.41 mm
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How even should the cranking compression be between the lowest and highest cylinder readings on an engine without mechanical problems
Answers
Answer:
It should be within 10%
Explanation:
Cranking compression is simply the pressure that builds up inside cylinders when the valves are closed and the piston then moves up the bores to lead to compression of the mixture.
Cranking compression is normally measured in pounds per square inch (PSI).
When checking cranking compression, we should be looking for signs of replication between cylinders. It means that each cylinder should build pressure within about 5 percent of the others under the same number of starter revolutions. Thus, the variation between the highest and lowest readings should not be more than 10%
True or false
Consumer is the end user
Client is usually a company
Consumer is usually a company
Client is the end user
Consumer is the end user
Client is usually a company
Consumer is usually a company
Client is the end user
Answers
Answer:
Explanation:
a) True
b) False
c) False
d) False
e) True
f) False
g) False
h)False
Plz mark as brainliest
A steel component with ultimate tensile strength of 800 MPa and plane strain fracture toughness of 20 MPam is known to contain a tunnel (internal) crack of length 1.4 mm. This alloy is being considered for use in a cyclic loading application for which the design stresses vary from 0 to 410 MPa. Would you recommend this alloy for this application
Answers
Complete question:
A steel component with a tensile strength of 800 MPa and fracture toughness Kic=20 MPa Nm is known to contain internal cracks (also called tunnel cracks) with the maximum length of 1.4 mm. This steel is being considered for use in a cyclic loading application for which the designed stresses vary from 0 to 420 MPa. Would you recommend using this steel in this application?
a. Not sure. Because cyclic loading is applied. Fatigue test is needed in order to make the recommendation.
b. Yes, this because the tensile strength of steel is much higher than the applied highest stress of 420 MPa.
c. Yes, this because the calculated critical stress to fracture for the cracks is higher than the highest applied stress of 420 MPa and the steel can withstand the stress of 420 MPa.
d. No. Although the calculated critical stress to fracture for the cracks is slightly higher than the highest applied stress of 420 MPa and the steel may withstand the static stress of 420 MPa, the cyclic loading may cause rapid fatigue fracture.
Answer:
A. Not sure. Because cyclic loading is applied. Fatigue test is needed in order to make the recommendation.
Explanation:
we are not sure if to recommend this alloy for this application given that this material has already been left to experience fatigue degradation. the cyclic load application brings about a growth in the crack. We know that cyclic loading is continuous loading that is useful for the testing of fatigue. Therefore the answer to this question is option a. We cannot make recommendations except fatigue testing has been carried out.
thank you!
15. Whether technology is good or bad depends on how it is used.
(1 point)
O True
O False
Answers
Answer:
true
Explanation:
Answer:
True
Explanation:
The internet is a very useful tool, but remember there are billions of people out there who would use it for good purpose or bad ones.
brainly and points if you want
Answers
Answer:
thank you
Explanation:
have a nice day
Answer:
thankd
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During this experiment, it was important to keep some parameters constant so we can compare the efficiency of different alcohols. Which one of the parameter was not constant?.
Answers
The purification of a wide range of materials involves the use of distillation, a significant commercial procedure.
The purification of a wide range of materials involves the use of distillation, a significant commercial procedure. However, it would definitely be helpful to clarify the terms that describe the procedure and related qualities before we start a discussion of distillation.
Although you may be familiar with several of these terms, you might not be aware of their precise definitions. Let's start by outlining the procedure for changing a material from its condensed phase to its gas phase. This process is known as sublimation for solids and vaporization for liquids. Both procedures call for heat.
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gate valves are most commonly operated by: select one: a. a handwheel. b. bar handles. c. retracting handles. d. quarter-turn handles.
Answers
Gate valves are most commonly operated by a handwheel. The handwheel is attached to the valve stem, which opens and closes the valve by rotating the gate.
This type of valve operation is preferred in situations where precision control is necessary, as it allows for fine adjustments to be made to the valve position. Bar handles are also sometimes used to operate gate valves, but this is less common than handwheels. Retracting handles and quarter-turn handles are not typically used to operate gate valves, as they are better suited for other types of valves, such as ball valves and butterfly valves. Overall, handwheels are the most reliable and commonly used method for operating gate valves.
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Integer dataSize is read from input. Then, strings and integers are read and stored into string vector colorList and integer vector quantityList, respectively. Lastly, string colorAsked is read from input.
Find the sum of the elements in quantityList where the corresponding element in colorList is equal to colorAsked.
For each element in colorList that is equal to colorAsked, output "Index " followed by the element's index. End with a newline.
Ex: If the input is:
3
lavender 25 lavender 22 gray 161
lavender
Then the output is:
Index 0
Index 1
Total: 47
#include
#include
using namespace std;
int main() {
int numElements;
string colorAsked;
int sumQuantity;
unsigned int i;
cin >> numElements;
vector colorList(numElements);
vector quantityList(numElements);
for (i = 0; i < colorList.size(); ++i) {
cin >> colorList.at(i);
cin >> quantityList.at(i);
}
cin >> colorAsked;
/*answer here*/
cout << "Total: " << sumQuantity << endl;
return 0;
}
Answers
Where the above condition is given, here's the solution:
#include <iostream>
#include <vector>
#include <string>
using namespace std;
int main() {
int numElements, sumQuantity = 0;
string colorAsked;
unsigned int i;
cin >> numElements;
vector<string> colorList(numElements);
vector<int> quantityList(numElements);
for (i = 0; i < colorList.size(); ++i) {
cin >> colorList.at(i);
cin >> quantityList.at(i);
}
cin >> colorAsked;
for (i = 0; i < colorList.size(); ++i) {
if (colorList.at(i) == colorAsked) {
cout << "Index " << i << endl;
sumQuantity += quantityList.at(i);
}
}
cout << "Total: " << sumQuantity << endl;
return 0;
What is the explanation of the above code?
First, we declare an integer variable sumQuantity to keep track of the sum of quantities of elements in quantityList where the corresponding element in colorList is equal to colorAsked.We read the integer numElements from input.We declare two vectors colorList and quantityList with numElements elements each.We use a loop to read each string and integer from input and store them in colorList and quantityList, respectively.We read the string colorAsked from input.We use another loop to iterate through colorList and check if each element is equal to colorAsked. If it is, we output "Index " followed by the element's index and add the corresponding quantity from quantityList to sumQuantity.Finally, we output the total sum of quantities in sumQuantity.
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Hey guys can anyone list chemical engineering advancement that has been discovered within the past 20 years
Answers
Nanopesticides. The world population keeps growing. ...
Enantio selective organocatalysis. ...
Solid-state batteries. ...
Flow Chemistry. ...
Porous material for Water Harvesting. ...
Directed evolution of selective enzymes. ...
From plastics to monomers. ...
+ The single bridge rectifierop righas to deliverade current
Of 30A at a dc output Voltage of 100v. if it's supplied by a simple
Phase transformer of ratio 4il.compute the premary and secondary
Voltages and currents. Also calculate the ripple factor for the load
Voltape wave form. Assume the load is highly inductive.
AD2
Eve Ymsinut
load
ADA
DA
93
Answers
Answer:
you are so smart
Explanation:
i have 8 cARS
Can you find thevenin equivalent for this example?
Answers
With the load impedance open-circuited, the Thevenin voltage is calculated. Find the voltage at the load terminals that is open-circuit.
Explaining Thevenin's TheoremThevenin's Theorem: What is it? According to Thevenin's Theorem, any linear circuit can be made simpler by using a single dc voltage and a series resistance, regardless of how complex it is.
What are Thevenin's theorem's benefits?It makes the less crucial section of the circuit simpler and makes it possible for us to see the output part's operation in real time. It simplifies a complicated circuit by putting one emf source in series with one resistance.
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Two technicians are explaining what exhaust gas emissions tell you about engine operation. Technician A says that the higher the level of CO2 in the exhaust stream, the more efficiently the engine is operating. Technician B says that CO2 levels of 20 to 25 percent are considered acceptable. Who is correct?
A. Both Technicians A and B
B. Neither Technicians A and B
C. Technician A
D. Technician B
Answers
Technicians A is correct in the given scenario. The correct option is C.
What is exhaust gas?Exhaust gas is a byproduct of combustion that exits the tailpipe of an internal combustion engine.
It consists of a gas mixture that includes carbon dioxide (CO2), carbon monoxide (CO), nitrogen oxides (NOx), hydrocarbons (HC), and particulate matter (PM).
Technician B is mistaken. CO2 levels in the exhaust should be less than 15%, preferably between 13% and 14.5% for petrol engines and 11% to 13% for diesel engines.
High CO2 levels can actually indicate inefficient engine operation, as it means that not all of the fuel in the engine is being burned and is being wasted as exhaust.
Thus, C is the correct answer. A technician is correct.
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As the length of a welding cable increases, the amount of
resistance decreases.
True
False
Answers
Answer:
False
Explanation:
Resistance occurs when the flow of charge through a wire is hindered. Resistance of flow of charge increases where the cable length increases .In a longer cable the charge carriers and the atoms in the cable collide more resulting to higher resistance.
The correct answer choice is: False.
The first answer is incorrect because resistance to flow of charge in a cable has a direct relation with length of cable in that increase in length of conducting cable will result to increase in resistance to flow of charges through the cable, not decrease in resistance.
Explain packaging films and how gums are used in packaging films
Answers
packaging films can be measured in several ways.Many devices for measuring film permeability to oxygen are on the market
Fluid systems can distribute pressure unequally to all points in a system.
True
False
Answers
Answer:
true
Explanation:
Answer:
false
Explanation:
In an industrial process, the diameter of a ball bearing is an important measurement. The buyer sets specifications for the diameter to be 3.0 ± 0.01 cm. The implication is that no part falling outside these specifications will be accepted. It is known that in the process the diameter of a ball bearing has a normal distribution with mean μ = 3.0 and standard deviation σ = 0.005. On average, how many manufactured ball bearings will be scrapped?
Answers
On average, the percentage of manufactured ball bearings that will be scrapped is 4.56%.
What is the manufactured ball bearings about?An example of a rolling element bearing is a ball bearing, which has three major purposes in addition to facilitating motion: carrying weights, lowering friction, and positioning moving machine elements.
Note that:
x1 = 3-0.01 = 2.99
x2 = 3+0.01 = 3.01
So, It can be scrapped by:
1−P(2.99 < Z <3.01)= 1−P (2.99 −3/ 0.005 < Z < 2.99+30.00/5)
=1−P(2.99 − 3/0.005 < Z <2.99 + 3/0.005)= 1 − P ( −2 < Z <2)
=1−(P (Z < 2.0) − (P (Z> − 2.0)) = ( P (Z > 2.0) + P( Z < −2.0)=
2 x 0.0228 = 0.0456
Therefore, the Answer will be 4.56% of the manufactured ball bearings need to be scrapped.
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technician a says that gasoline engines have spark plugs to ignite the air-fuel mixture.technician b says that diesel engines use compression to ignite the air-fuel mixture. who iscorrect?
Answers
It is right to state that Technician B is correct. A piston compresses the air in the cylinder, causing it to become very hot. The diesel is then atomized in the injectors and sprayed into the heated air as a mist. The heated air ignites the gasoline quickly, creating ignition.
What is compression in Engines?As the fuel injectors drive air and fuel into the combustion chamber, compression occurs in the internal combustion cylinders.
The mixture ignites, and the piston is driven by the expansion of the burning gases in the cylinders, converting the energy from combustion into mechanical energy that propels the vehicle.
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when installing conduit in reinforced concrete, it is best to use a
Answers
When installing conduit in reinforced concrete, it is best to use a masonry bit.
What is conduit?Conduit is a tube or other non-flexible material in which electrical cables are housed. The use of conduit is necessary for protection against electric shock, mechanical injury, and chemical damage in the wiring system.
Conduit is utilized to run the wiring through various places to get them from one point to another. It provides extra support and protection to wires, reducing the risk of damage from external factors, and it is crucial in shielding wires in underground installations.
A masonry bit is a type of drill bit used to drill holes in concrete, brick, and other masonry materials. It is designed to drill through tough and hard materials that are difficult to drill through using other drill bits.
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When installing conduit in reinforced concrete, it is best to use a concrete saw to cut channels and then attach conduit clamps. Conduit is a type of protective casing used to house and protect electrical wiring. It is available in various materials such as PVC, metal, and fiberglass.
It is available in various materials such as PVC, metal, and fiberglass. Conduits are usually installed in various locations and may involve a range of techniques depending on the material used.The conduit can be installed in reinforced concrete, which is a type of concrete that has steel bars or fibers embedded to provide it with greater strength and durability. When installing conduit in reinforced concrete, it is best to use a concrete saw to cut channels and then attach conduit clamps. This process is also referred to as the "chasing method."The chasing method is a very common installation method. It involves cutting a channel into the concrete, laying the conduit in it, and then filling the channel with a patching compound.It is best to use a metal conduit that is resistant to damage, corrosion, and bending.The conduit should be cut to length and deburred to remove any sharp edges.
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Determine (a) the peak frequency deviation, (b) minimum bandwidth,and (c) baud for a binary FSK signal with a mark frequency of 38 kHz, a space frequency of 40 kHz, and an input bit rate of 4 kbps
Answers
The peak frequency deviation, minimum bandwidth, and baud for a binary FSK signal for the given frequencies are respectively;
a) 0.5 kHz
b) 9 kHz
c) 4000
Peak frequency deviation1) The peak frequency deviation is gotten from the formula;
∆f = |f_m - f_s|/f_b
where;
f_m is mark frequencyf_s is space frequencyf_b is input bit rateThus;
∆f = |38 - 40|/4
∆f = 0.5 kHz
2) The minimum bandwidth is given by the formula;
B = 2(∆f + f_b)
B = 2(0.5 + 4)
B = 9 kHz
3) For FSK signal, N = 1, and the baud is gotten from the Equation;
baud = f_b/1
f_b = 4 kbps = 4000 bps
Thus; baud = 4000/1 = 4000
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technician A says that in any circuit, electrical current takes the path of least resistance. technician B says that while this is true in a series circuit, it's not entirely true in a parallel circuit. who is correct?
Answers
Answer:
technician A is correct
Explanation:
Technician B has circuit topologies confused. In a series circuit, there is only one path for electrical current to take. In a parallel circuit, the current will divide between paths in proportion to the inverse of their resistance. The least resistance path will have the most current.
Technician A is mostly correct.