To List all airports served by which airlines, Southwest has more flights than Northwest and Include only airports with at least one outbound Southwest flight and at least one Northwest flight, check the code given below.
What is an airport?An airport is an aerodrome with extensive facilities, primarily for commercial air transport. Airports typically include a landing area, which is an aerially accessible open space with at least one operationally active surface, such as a runway for a plane to take off and land or a helipad
As well as adjacent utility buildings, such as control towers, hangars, and terminals, to maintain and monitor aircraft. Larger airports may have aprons, taxiway bridges, air traffic control centres, passenger facilities such as restaurants and lounges, and emergency services.
//CODE//
-- select columns f.Source, FlightsSw, FlightsNW
-- using count(), case when..end to find the number of flights
select f.Source,
count(case when a.Name = 'Southwest' then f.FlightNo else null end) as 'FlightsSw',
count(case when a.Name = 'Northwest' then f.FlightNo else null end) as 'FlightsNW'
from flights f -- from flights table with an alias name f
inner join airlines a -- inner join airlines to flights with an alias name a
on f.Airline = a.Id -- on condition to join both the tables
group by f.Source -- group by to aggregate per source airport
having FlightsSw >= 1 -- having clause to get atleast one flight on Southwest
and FlightsNW >= 1 -- and at least one flight on Northwest
and FlightsSw > FlightsNW -- and get Southwest operates more flights than Northwest
order by f.Source; -- order by to sort the results by source airport code
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Suppose that move is a member function of the class vehicleType. Which of the following statements declare move to be a pure virtual function.
(i) virtual void move(double a, double b) const = 0;
(ii) virtual void move(double a, double b) 0 = const;
A) Only (ii) B) Only (i) C) Both (i) and (ii) D) None of these.
Let's assume that move is a function of the vehicleType class. virtual void move(double a, double b) const = 0.
What accomplishes a class method?A class method is a method that is tied to the class itself, not to its objects. Because the class parameter refers to the class rather than the object instance, they have access to the class's state. It can alter a class state so that it would affect every instance of the class.
What are the features and functions of a class?It is used to describe and comprehend objects in more detail than just their label through the usage of feature, function, and class.
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In the optimistic approach, during the phase, a transaction scans the database, executes the needed computations, and makes the updates to a private copy of the database values.
a. read b. validation
c. write d. shared
The correct answer for this problem is a. read
Why does it uses read phase?
In the optimistic approach to concurrency control in database systems, during the read phase, a transaction scans the database and reads the values it needs in order to execute the necessary computations.
This is often referred to as the "read" phase.
If the values have been modified by another transaction, the current transaction may need to abort and retry the process from the beginning. This ensures that transactions are able to execute without conflicting with one another and helps to maintain the integrity of the database.
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when producing a map in arcgis to emphasize the results of a suitability analysis, the largest element on the page should be: question 25 options: the location map the map legend the map frame containing the symbolized suitability feature class. the north arrow all these elements should be the same size
Making indicators for habitat suitability. The two main methods used to produce HSIs are as follows: Data-driven techniques ecological niche modeling This usually entails a statistical study of information about a species' present distribution. The so-called "environmental envelope" strategy is one of the easiest methods.
How do you determine whether a place is appropriate for GIS?
To identify appropriate locations for a project, use the ArcGIS Spatial Analyst extension. There are two approaches to locate appropriate places. To find places that meet your requirements, one method is to query your data. The second method involves creating a suitability map by merging datasets to determine each location's acceptability in the region.
What does the appropriateness test intend to achieve?
Investing firms conduct a suitability test to assess whether a client's investment goals, financial situation, knowledge, and experience are compatible with a particular portfolio management service or investment counseling service.
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you have configured two routers (londona and londonb) for ospf routing. serial0/0 on londona is connected to serial0/1 on londonb. the partial configu
The supplied statement claims that the network statements' wildcard mask values are wrong.
What use does a router serve?One or more carton networks or subnetworks can be connected using a router. By sending data packets to thier intended IP addresses, it manages traffic between different networks and allows several devices to share an Internet connection.
Is purchasing my own router preferable?The most recent WiFi routers and isps make it simple to achieve the speeds that connection stability you want without struggling to accommodate every device. Long-term savings still apply even if you wind up updating your bought modem every 3 to 5 years.
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The complete question is-
You have configured two routers, LondonA and LondonB for OSPF routing. Serial0/0 on LondonA is connected to Serial0/1 on LondonB. The partial configuration of each router is shown below:
hostname LondonA
!
interface Serial0/0
ip address 172.17.1.78 255.255.255.252
encapsulation frame-relay
!
interface Serial0/1
ip address 172.17.1.161 255.255.255.248
encapsulation frame-relay
!
router ospf 300
network 172.17.1.76 0.0.0.3 area 100
network 172.17.1.160 0.0.0.7 area 100
!--additional output omitted
hostname LondonB
!
interface Serial0/0
ip address 172.17.1.17 255.255.255.248
encapsulation frame-relay
!
interface Serial0/1
ip address 172.17.1.77 255.255.255.252
encapsulation frame-relay
!
router ospf 200
network 172.17.1.16 0.0.0.7 area 100
network 172.17.1.76 0.0.0.3 area 100
!--additional output omitted
match each ad fs authentication factor on the left with the appropriate description on the right. each authentication factor may be used once, more than once, or not at all.
1. A secret string of characters- password 2. A biometric authentication using fingerprint scanning, 3. A smart card, a tangible token 4. Multi-Factor Authentication - Authentication needs to be verified by many factors.
Describe biometrics.
Biometrics are measurements of the body and computations of human traits. In computer science, access control and identity is achieved by biometric security, also known as real authentication. It is also used to locate individuals in groups that are being monitored. The distinct, quantifiable traits that are used to identify and classify people are called biometric identifiers. Biological traits connected to a person's physical attributes, such as body form, are frequently characterized as biometric identifiers. Examples include fingerprinting, veins in the palms, face recognition, DNA, handprints, hand geometry, iris identification, retina, and odor/scent.
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Discuss which of the following systems allow module designers to enforce the need-to-know principle. a. The MULTICS ring-protection scheme b. Hydra’s capabilities c. JVM's stack-inspection scheme
Many contemporary systems have fewer rings than the original Multics system, which had eight.
What is meant by MULTICS ring-protection scheme?A layered supervisor may be present in each process's virtual memory thanks to the ring protection scheme. In Multics, ring O is where the lowest-level supervisor procedures, such as those that implement access control, I/O, memory multiplexing, and processor multiplexing, are executed.
Many contemporary systems have fewer rings than the original Multics system, which had eight. Through the use of a unique machine register, the hardware constantly remains aware of the current ring of the active instruction thread.
Your company is protected by three different rings, and in order to be successful, each ring must be addressed. Let's go over the three rings and how to fasten them.
Therefore, the correct answer is option a. The MULTICS ring-protection scheme.
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a multithreaded web server wishes to keep track of the number of requests it services (known as hits). consider the two following strategies to prevent a race condition on the variable hits. the first strategy is to use a basic mutex lock when updating hits:
Atomic operations leverage processor is used to keep track of the number of requests it services.
Atomic integer would be more efficient because since the time duration of the lock being held is so short, just the time to increment hits.In a mutex lock if the lock wasn't available, it would incur heavy cost in context switching to sleeping and then to waking back up when it is available shortly thereafter.With atomic integer, it would just busy wait, using CPU cycles but for a much shorter time than the context switch time with a mutex lock.There should be an acquire before the line "if (number_of_processes....)"" So that the number isn't corrupted after calling the if statement if another process is released.There should be release after the line "++number_of_processes" and an acquire and release surrounding the line "—number_of_processes;" so that only one modification of the count of processes can happen at once.To know more about server visit:
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To add drop-down lists to your worksheet with predetermined options for each city name, you decide to use _____
To add drop-down lists to your worksheet with predetermined options for each city name, you decide to use Data validation.
What is worksheet?In the original sense of the word, a worksheet refers to a piece of paper used for work. They take many different forms, but are most frequently connected to tax forms, accounting, and other business settings. The worksheet made of paper is increasingly being replaced by software.
It might be a printed page that a kid fills out with a writing implement. There is no requirement for additional supplies. It is "a piece of paper used to record work schedules, working hours, special instructions, etc. a piece of paper used to jot down problems, ideas, or the like in a rough form." A worksheet used in education might contain questions for students and spaces for them to record their responses.
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in this lab, your task is to discover whether arp poisoning is taking place as follows: use wireshark to capture packets on the enp2s0 interface for five seconds. analyze the wireshark packets to determine whether arp poisoning is taking place. use the 192.168.0.2 ip address to help make your determination. answer the questions.
Open Wireshark and choose enp2so from the Capture menu. To start the capture, select Blue fin. Choose the red box to stop after 5 seconds. Enter arp to display those packets in the Apply a display filter box. Look for lines in the Info column that contain the IP 192.168.0.2.
What is meant by which of the following when an attacker sends phony packets to link their MAC address?An attack known as ARP spoofing involves a malicious actor sending forged ARP (Address Resolution Protocol) packets across a local area network.
To find duplicate IP address traffic, which of the following wireshark filters is used?For Wireshark to only show duplicate IP information frames, use the arp. duplicate-address-frame filter.
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___________ is when network managers deal with network breakdowns and immediate problems, instead of performing tasks according to a well laid out plan.
a. Panicking
b. Multiplexing
c. Multitasking
d. Firefighting
e. Fireflying
Instead of carrying out activities in accordance with a well-thought-out strategy, network administrators engage in "firefighting," where they address urgent issues and network outages.
What exactly does "network" mean?A number of computers connected together to share data (such printers and CDs), online cloud, or enable electronic conversations make up a network. A network's connections to its computers can be made through cables, phone lines, radio frequencies, spacecraft, or infrared laser beams.
Why is a network crucial?Simply simply, networking entails establishing relationships with other business people. Always consider the benefits to both sides when networking. A important good, higher exposure, a larger support network, enhanced company growth, and far more meaningful relationships are a few benefits of networking.
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design a 32 bit counter that adds 4 at each clock edge the counter has reset and clock inputs upon reset the counter output is all 0
The counter is a digital sequencer, here a 4-bit counter. This simply means that you can count from 0 to 15 or vice versa depending on the counting direction (up/down).
The counter value (“count”) is evaluated on each positive (rising) edge of the clock cycle (“clk”).
If the "reset" input is logic high, the counter is set to zero.
If the "load" signal is logic high, the counter is loaded with the "data" input. Otherwise, count up or count down. If the "up_down" signal is logic high, the counter counts up, otherwise it counts down.
What are counters and their types
A counter is a sequential circuit. A well-known counter is a digital circuit used for counting pulses. Counters are the widest use of flip-flops. There are two types of counters. Asynchronous or ripple counter.
What are counters used for?
Counters are used not only to count, but also to measure frequency and time. increase memory address
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vector and raster files are multiple choice geoadvertising functions. geoinformation. geosocial applications. geographic data.
Vector or raster are the two main classifications for digital graphic files. For the purpose of creating a picture, vector graphics, such as logo files, use complex routes made up of points and lines.
Which raster and vector file formats are most popular?Raster file formats JPG, GIF, PNG, TIF, BMP, and PSD are the most popular ones. AI, CDR, and SVG are the most widely used vector file types. The software that developed the file determines whether it is a raster or vector file, however both rasters and vectors can be rendered in EPS and PDF formats.Vector or raster are the two main classifications for digital graphic files. For the purpose of creating a picture, vector graphics, such as logo files, use complex routes made up of points and lines. A grid of teeny-tiny pixels is used to make raster images, such as digital photos.To learn more about Vector or raster refer to:
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The ____ command saves your work, turns off the computer fans and hard disk, and then places the computer in a lower-power state. shut down.
The sleep command stores your work, disables the hard drive and computer fans, and then switches the computer to a lower-power mode. closing down.
What is Sleep mode?Electronic devices like computers, televisions, and remote control devices can operate in a low power mode called sleep mode (or suspend to RAM). These modes allow users to resume operations without having to issue new commands or wait for a machine to reboot, and they significantly reduce electrical consumption compared to leaving a device fully on.The computer goes into a lower-power state when the sleep command caches your work, turns off the hard disk and computer fans. Many gadgets use an LED power light that pulses or is red to indicate this power mode.In order to keep the RAM running and be ready to respond to a wake-up event, a computer needs to use some energy even when it is dormant. In several nations, standby power for a sleeping computer is regulated. For instance, the One Watt Initiative in the United States places restrictions on this power.Hence, The sleep command stores your work, disables the hard drive and computer fans, and then switches the computer to a lower-power mode. closing down.
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create a view called IBM_InvoiceData that will retrieve columns and rows from the Invoices table for the vendor named IBM.
which of the following would be considered an input device? cpu cpu microsoft word microsoft word keyboard keyboard printer
A keyboard is regarded as an input device. Examples of input devices include scanners, mice, joysticks, and digital cameras.
Which of the following statements—that an output device provides information to the computer and an input device receives it—is true?A computer's output device transmits information to an input device, and the other way around. The computer provides information to an input device, which receives it, and the other way around. Both assertions are false.
What kind of hardware is used in computers?Computer hardware refers to the actual physical components of a computer, such as the chassis, CPU, RAM, monitor, mouse, keyboard, computer data storage, graphics card, sound card, and speakers.
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which of the following statements are true? local variables do not have default values. data fields have default values. a variable of a primitive type holds a value of the primitive type. all of the above
True local variables do not all have default values. Data fields come with default options. A primitive type's value is stored in a variable of that type.
Exist default values for data fields?Data fields come with default options. - No default values exist for local variables. A value of a primitive type is stored in a primitive type variable.
Which of the above techniques can be used to set up many variables with the same value at the beginning?By using = back-to-back, you can give many variables the same value. This is helpful, for instance, when setting numerous variables to the same value at the beginning. After assigning a value, it is also possible to assign a different value.
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44.7.1: unit testing. add two more statements to main() to test inputs 3 and -1. use print statements similar to the existing one (don't use assert).
To add two more statements to main() to test inputs 3 and -1, check the given code.
What is statements?A list of directives for a computer to follow constitutes a computer programme. These instructions for programming are referred to as statements in a programming language.
The parts of programmes called C++ statements govern the order and flow of execution of other programmes. Statements may either be one line of code with a semicolon ; at the end or a block of code enclosed in curly braces.
There are several different types of statement in C++.
Labeled statementsExpression statementsCompound statementsSelection statementsIteration statementsJump statementsTry-Catch blocksDeclaration statements//CPDE//
cout << "3,
expecting 27,
got: " << CubeNum(3) << endl;
cout << "-1,
expecting -1,
got: " << CubeNum(-1) << endl;
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Rewards systems that reinforce the core values of the organization and contribute to organizational cohesiveness are the least effective type. T/F
False: The least successful form of rewards systems are those that promote organizational cohesion and reaffirm the essential values of the organization.
How does reinforcement work?
Reinforcement is a technique used in behavioral psychology to strengthen an individual's future behavior if that behavior is preceded by a certain form an important. This strengthening effect may be quantified as increased behavior (e.g., drawing a lever more frequently), increased length (example - pushing a lever for an prolonged period of time), increased magnitude (e.g., pulling a lever more firmly), or reduced latency (example - pulling a lever more quickly than following the antecedent stimulus). Self-awareness, self-reflection, and self-regulation are the three key principles of the soul paradigm of human nature. Historically, incentives have correlated with self-regulation.
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to assign a value to a global variable in a function, the global variable must be first declared in the function. T/F
False. Value can to assigned to a global variable in the function even if we dont declare it before.
How assigning the value of global variable is possible?Any variable that has to be used inside the function but is declared outside the function is referred to as a global variable. When you need to declare a global variable inside of a function, you use the word global. Normal variables only have a scope that extends to the function's conclusion when they are declared inside.
Utilize the global keyword when declaring the variable if you wish to use it outside of the function as well.
In JavaScript, there are two scopes: local and global. When a variable is assigned directly without being declared, it becomes a global property of the window object.
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which of the following statements is true of firewalls? answer unselected they are placed all over the internet. unselected they are frequently used to prevent unauthorized internet users from accessing private networks connected to the internet. unselected they completely prevent network penetration by outsiders and therefore should be viewed as the sole element required for the overall security plan. unselected they are implemented in hardware but not software.
Answer:
They are used to prevent unauthorized internet users accessing private networks.
Explanation:
Which of the following activities is least likely to result in a segmentation fault?
Question 19 options:
Removing an element from the middle of a linked list without fixing the pointers afterwards
Growing the stack too large, such as with an unbounded recursive function
Trying to write into protected space, such as modifying the code segment of the program
Accessing a memory address outside its boundaries
From the following activities, the one that is least likely to result in a segmentation fault is: "Removing an element from the middle of a linked list without fixing the pointers afterwards" (Option A)
What is a segmentation fault?A segmentation fault or accessibility violation is a fault, or failure condition, reported by memory-protected hardware that alerts an operating system that software has attempted to access a restricted portion of memory. This is a type of generic protection fault on ordinary x86 machines.
Check whether your compiler or library can be made to check limits on I at least in debug mode, to remedy a segmentation error. Buffer overruns that write trash over excellent pointers can trigger segmentation faults. These actions will significantly minimize the chance of segmentation faults and other memory issues.
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in new plant designs, fieldbusses are progressively being replaced by ethernet, making cyber attacks against field equipment even easier. g
Device networks are being supplanted by Ethernet, despite being valued and recognized as reliable, tested, and deterministic. Ethernet will continue to descend into ever-simpler gadgets.
The Fieldbus Foundation also recognizes the benefits of using high-speed Ethernet in industrial applications, which is why Foundation HSE is built around this technology. Device, subsystem, and enterprise integration are the intended uses of Foundation HSE, which operates at 100 Mbit/s.
Real-time Ethernet: a potential fieldbus replacement?Real-time Ethernet-based fieldbuses have been built since the turn of the millennium. These might eventually take the place of conventional fieldbuses.
In industrial networking, what is fieldbus?Fieldbus. A series of real-time distributed control industrial computer network protocols known as Fieldbus is specified under IEC 61158.
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with the workshop type summary query design view, group the records by workshop type, count the lastname field values, and run the query
the design view query The query results are shown in a datasheet by Access.
In Access, how can I sort a last name query?Click on the "Sort" row of the field in the QBE grid by which you want to order the results of a query in Access' query design view. Then choose "Ascending" or "Descending" order using the drop-down that appears.
How can you find a record in a database table by looking for particular information there?Click the field you wish to search in after opening the table or form. Click Find or press CTRL+F in the Find group on the Home tab. The Find tab is selected, and the Find and Replace dialog box displays.
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with my android phone synced to my crv, if using assistant drive mode, will the map play through cars screen
It depends on the specific make and model of your car and phone, as well as the settings and capabilities of the specific applications you are using.
Explanation in Detail:
In general, if you have an Android phone and you are using Assistant Drive mode, you may be able to use your car's display screen to view maps and navigation information. However, this will depend on whether your car's display screen is compatible with your phone and whether the navigation app you are using is compatible with your car's display screen.
For example, some newer models of cars have built-in Android Auto functionality, which allows you to use your car's display screen to access certain apps and features on your Android phone. If your car has this capability and you are using an Android Auto-compatible navigation app, you may be able to view maps and navigation information on your car's display screen.
Similarly, if you are using a navigation app that is compatible with Ap*ple CarPlay (such as Go*ogle Maps or Waze), you may be able to view maps and navigation information on your car's display screen if your car has Apple CarPlay functionality.
It is also worth noting that some cars have their own built-in navigation systems that can be used independently of your phone. In this case, you may not need to use your phone's navigation app at all.
To determine whether you can view maps and navigation information on your car's display screen, you will need to check the specific capabilities of your car and phone, as well as the settings and requirements of the navigation app you are using.
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Which of the following blocks would most likely be used to create a string constant from scanned code?
Question 15 options:
{ append_scan(yytext); return TOKEN_STRING; }
{ return TOKEN_STRING; }
{ append_scan(yytext); return TOKEN_STRING; }
{ $$ = createLiteral(scanned_text); }
The blocks that would most likely be used to create a string constant from scanned code is { append_scan(yytext); return TOKEN_STRING; }. The correct option is c.
What is scanned code?Code scanning makes it possible to find vulnerabilities and fix them before they are released into production, removing the cybersecurity risks they present.
When scanning a string, the literal "EOL" means "end of the line." When Python encounters an EOL error, it means that it has reached the end of a line in a string. You might have done this by forgetting the closing quotes or by trying to make a string span more than one line. Single or double quotes around strings.
Therefore, the correct option is c, { append_scan(yytext); return TOKEN_STRING; }.
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what are two major concerns regarding iot devices? (select two.) answer short life span privacy accessibility hacking availability
The security of IoT devices and the security of the network are the two main issues. Serious data breaches may result from an unsecure IoT device. It's crucial to manage security for IoT connections and secure IoT devices.
What is an example of IoT devices?
A few examples of IoT goods are smart phones, smart refrigerators, smart watches, smart fire alarms, smart door locks, smart bicycles, medical sensors, fitness trackers, smart security systems, etc.
Give five examples of what the Internet of Things is.
The Internet of Things, or IoT, is the name given to the rapidly expanding network of interconnected items that can exchange data in real time thanks to integrated sensors. Appliances like refrigerators, vehicles, lights, and thermostats can all be connected to the Internet of Things.
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in organisations that generate large number of transactions,.............are often a top priority in database designa. relationships among entitiesb.naming conventionsc.logical design standardsd.high processing speeds
In businesses that produce a lot of transactions, high processing speeds are frequently given top importance in database design.
Can I have ADHD if my processing speed is fast?No matter what researcher A or B chooses to name it—sluggish cognitive tempo, pure inattentive ADHD, whatever—you can still be highly intelligent. High processing speeds are even possible.
What is Processor Speed and Why Is It Important?When comparing computers, one of the most crucial factors to take into account is the processor speed (CPU speed). The CPU is frequently referred to as "the brain" of your computer, thus keeping it in good working order is crucial to the durability and functionality of your machine.
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A technician assist Joe, an employee in the sales department who needs access to the client database, by granting him administrator privileges. Later, Joe discovers he has access to the salaries in the payroll database.Which of the following security practices was violated?
The following security procedures were broken in accordance with the assertion made above on the principle of least privilege.
Giving an example, what is a database?A collection is a planned gathering of data. They enable the manipulation and storage of data electronically. Data administration is made simple by databases. Let's use a database as an example. A database is used to hold information on people, their mobile numbers, or other contact information in an online telephone directory.
What purposes serve databases?Any set of data or information that has been properly structured for quick searching and retrieval by a machine is referred to as a database, often known as an electronic database. Databases are designed to make it easy to save, retrieve, edit, and delete data while carrying out various data-processing tasks.
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To select adjacent worksheet tabs, click the first tab, press down and hold down this key, and then click the last tab.Shift
To select the adjacent worksheet tabs, click the first tab, press down and hold down the shift key and then click the last tab.
What is Microsoft Word?Microsoft Word is a word processor that may be used to create papers, letters, reports, and other types of writing of a professional calibre. It includes sophisticated capabilities that give you the best formatting and editing options for your files and projects.
What are examples of MS Word?Application software that enables you to create, edit, and save any documents is an example of Microsoft Word. It was first developed by software engineers Richard Brodie and Charles Simoyi in 1983 and is now owned by Microsoft.
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Different approaches towards congestion control. Use the pulldown menu to match a congestion control approach to how the sender detects congestion- The sender infers segment loss from the absence of an ACK from A. end-end the receiver. B. network-assisted C. delay-based - Bits are set at a congested router in a sender-to-receiver datagram, and bits are in the returned to the sender in a receiver- to sender ACK, to indicate congestion to the sender. - The sender measures RTTs and uses the current RTT measurement to infer the level of congestion.
In order to make better use of a shared network infrastructure and prevent congestive collapse, a process called congestion management regulates the entry of data packets into the network. At the TCP layer, congestive-avoidance algorithms (CAA) are used as a preventative measure against network collapse.
How do TCP flow and congestion control differ from one another?The communication between a sender and a receiver is managed by flow control, an end-to-end technique. Data link layer and transport layer flow control are both present. A network employs congestion management to manage traffic on the network.
What issues does congestion cause?Individuals, organizations, and the economy as a whole are all impacted by congestion in terms of additional costs and time as well as stress.
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