<goodString> =<UpCh>|<UpCh> <ch>
<UpCh> = A|B|C...|Z
<ch> = a|b|c...|z
You don't currently have recursive grammar. A recursive grammar would or will have at least one production that (directly or indirectly) invokes itself on the right side. "An endless amount of lower case letters" would be the most appropriate phrase to employ in this situation. Because of this, I would define a lower case string (or whatever) as either nil or a lower case string that is followed by a lower case letter. Your word will then start with an uppercase letter and end with a string of lowercase letters.
The lower case string can be defined in this situation as either a character followed by a string or as a string followed by a character.
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The designers of a database typically begin by developing a __________ to construct a logical representation of the database before it is implemented.
The designers of a database typically begin by developing a Data model to construct a logical representation of the database before it is implemented.
Gathering requirements is the first stage. In order to comprehend the proposed system and collect and record the necessary data and functional requirements, the database designers must conduct interviews with the clients (database users). a design approach that starts by recognizing distinct design elements before grouping them together into bigger groups. Defining properties and organizing them into entities are the first steps in database architecture. Unlike top-down design The conceptual design, the logical design, and the physical design are the three components of this phase. The logical design phase is combined with the other two phases in some approaches.
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smartphone users may be able to share the internet connection of their device via a cable, bluetooth, or wi-fi in a process known as select one: a. tethering. b. binding. c. hitchhiking. d. piggybacking.
Answer: the answer to that is A
Explanation:
after too many sign-in attempts, one of your colleagues has been blocked from using her windows 10 user account. as a systems administrator, you need to help resolve this issue. how will you help her sign in using the computer management administrative tool?
By selecting the Account is locked Option, you help her sign in using the computer management administrative tool.
By choosing the Option Correct, Account is locked. After too many failed tries to sign in, user accounts will be immediately locked out. In the properties panel, you can unlock the account by deselecting the Account is locked out checkbox. IP Lockout may occur if you repeatedly fail to enter a valid Windows or Mac user name and password. As a result, you won't be able to try to log in from the same computer again until the lockout is fixed. The lockout automatically lasts for 30 minutes. Users frequently fail to enter their computer's user name and password and instead use their LogMeIn ID and password.
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What challenges do internet browsers face in the marketplace? in a paragraph
The challenge that Internet Browsers face in the market can be categorized into two:
Race for Superior adoption;Race for superior protection.Why are the above problems the biggest challenges of Internet Browsers?Suerior Adoption by Internet Users: In order to stay relevant, internet users must want to access the internet via a browser. If nobody is using a browswer, the browswer spends more money than they are making to get people on board. Hence, there is a challenge to stay relevant. One of the factors that drive adoption is how secure users feel.
Superior Secrity:
Security is paramount in the mind of any internet user to the extent that people are not paranoid to some extent about how to access the internet. Security is so important that Antivirus makers now have products that cater to this need. Hence it's important.
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The designers of a database typically begin by developing a __________ to construct a logical representation of the database before it is implemented.
The designers of a database typically begin by developing a Data model to construct a logical representation of the database before it is implemented.
What is a data model?
A data model in database is a type of data model that determines the logical structure of a database. It fundamentally determines in which manner data can be stored, organized and manipulated. They are three primary data models namely: relational, dimensional, and entity-relationship (E-R).
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you plan to deploy the following azure web apps: webapp1, that runs on windows server 2016 webapp2, that runs on windows server 2022 webapp3, that runs on ubuntu server webapp4, that runs on red hat enterprise linux you need to create the app service plans for the web apps. what is the minimum number of app service plans that should be created? select only one answer. 1
you plan to deploy the following azure web apps: webapp1, that runs on windows server 2016 webapp2, that on ubuntu server webapp4.
Developers can create mobile or web apps using the hosting option offered by Azure App Services. In addition to this, developers may use it to create Logic apps or API apps that integrate with SaaS. Azure App Services is the single offering that replaces a number of different Azure services, such as Azure Website, Azure Mobile Services, and Azure BizTalk Services. App Service enhances your application's security, load balancing, auto-scaling, and automated management capabilities. It also provides DevOps features, such as continuous deployment using Azure DevOps, GitHub, Docker Hub, and other sources, package management, staging environments, custom domains, and TLS/SSL certificates.
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what are the source and destination port values in the segments flowing from the server back to the clients’ processes? b. what ip addresses are in the network-layer datagrams carrying the transport-layer segments?
For the server to return to the client processes, the source port and destination port will switch. Sending segment for Host A with source port 26145 and destination port 80. As a result, server B will use source port 80 and destination port 26145 to transmit the response back to host A.
Server B will return the response to Host C using source port 80 and destination 26145 and 7532.
The IP addresses in the datagrams that are returning to A or C will have the source IP set to the server's IP address and the destination IP set to the appropriate client address, which the client indicated in the initial request it sent to the server.
We saw that sequence numbers are required by the sender so that the receiver can determine whether a data packet is a duplicate of one that has already been received. The sender does not require this information (i.e., a sequence number on an ACK) to identify a duplicate ACK in the case of ACKs.
The rdt3.0 receiver can detect a duplicate ACK since it changed destination after receiving the original one. The rdt3.0 sender disregards the duplicate ACK since it is not the ACK that is required by the sender.
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the greatest cost of a virus or malicious code attack is:group of answer choiceslost dataall of theseloss of work hours and time spent patching systemsphysical damage to computer hard drives
The greatest cost of a virus or malicious code attack is loss of work hours and time spent patching.
What is a virus or a malicous code?
Both terms though have different meanings but they are often interchanged. A malware or malicious program is used to describe any code or program creating with the intent to harm or destroy. Virus on the other hand is a type of malware in the form of a code or program; it has the ability to self replicate and spread it self.
Some of the effect of these harmful software include loss of data (but can be retrieved from back ups), disrupting operations, defrauding people and loss of work hours and time spent on patching (this cannot be regained.)
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1.
Wikipedia is probably the best known wiki, and it is publicly accessible. What is one of the disadvantages of having a very accessible wiki?
A.Many people will be able to see it.
B.You can cover a wide variety of topics.
C.It is easy to put false information on it.
D.Readers might point out errors when they find them.
One of the disadvantages of having a very accessible wiki which is also publicly accessible is C.It is easy to put false information on it.
This is because Wiki is an online resource that covers a variety of topics on the internet with regards to history, science, business, current affairs, pop culture and many things, it gets a lot of visitors there.
Therefore, because it is public and easily accessible, it is easy to put false information in there to mislead the general public.
What is Wiki?This refers to the online resource that covers a variety of topics on the internet with regards to history, science, and business, and serves as an information resource to a lot of people.
Hence, we can see that one of the disadvantages of having an easily accessible wiki is that someone can easily put false information there.
Thus, the Option C is correct.
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how long will it take the ident field of the ipv4 header to wrap around, if the sender host a sends a stream of packets to host b as fast as possible? assume the packet size is 1500 bytes and the bandwidth is 600 mbps.
The number of packets required to carry the data is therefore 7 (ceiling(2980/480)). it take the ident field of the ipv4 header to wrap around, if the sender host a sends a stream of packets to host b as fast as possible
Imagining that the DF flag wasn't set
Assume that the optional IP header fields are not being used (i.e. IP header is 20 bytes)
Taking the 20 bytes for the header out of the original 3000 bytes, 2980 bytes are left over for the data.
Suppose that the original packet's ID is 'x'.
500 - 20 = 480 bytes of data can be transmitted in each packet with an MTU of 500 bytes.
The number of packets required to carry the data is therefore 7 (ceiling(2980/480)).
The packets will feature the following attributes. NOTE: You don't need to supply Total len because offset is measured in 8-byte blocks. Imagining that the DF flag wasn't set
Assume that the optional IP header fields are not being used (i.e. IP header is 20 bytes)
Taking the 20 bytes for the header out of the initial 3000 bytes, 2980 bytes are left over for the data.
Suppose that the original packet's ID is 'x'.
500 - 20 = 480 bytes of data can be transmitted in each packet with an MTU of 500 bytes.
The number of packets required to carry the data is therefore 7 (ceiling(2980/480)).
The packets will feature the following attributes.
Packet 1: ID=x, Total_len=500, MF=1, Frag_offset=0
Packet 2: ID=x, Total_len=500, MF=1, Frag_offset=60
Packet 3: ID=x, Total_len=500, MF=1, Frag_offset=120
Packet 4: ID=x, Total_len=500, MF=1, Frag_offset=180
Packet 5: ID=x, Total_len=500, MF=1, Frag_offset=240
Packet 6: ID=x, Total_len=500, MF=1, Frag_offset=300
Packet 7: ID=x, Total_len=120, MF=0, Frag_offset=360
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a char variable named c has been declared. write a statement that reads the next character from the keyboard (standard input) and stores it in c, regardless of whether it is a whitespace character.
Some computer languages, including C, C++, C#, and Java, employ the abbreviation char as a reserved keyword. It stands for character, a data type that may store a single character (letter, numeral, etc.).
To hold characters and letters, C employs the char type. Although C stores integer numbers rather than characters below, the char type is an integer type. Char values in C are stored in 1 byte of memory and have a value range of 0 to 255 or -128 to 127. variable name: char; Declaring is done here using char. Character data type, variable name is the variable's name (you can use any name you choose, such as a, b, c, alpha, etc.), and ; is the line termination (end ofline).
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a list of numbers has n elements, indexed from 1 to n. the following algorithm is intended to display the number of elements in the list that have a value greater than 100. the algorithm uses the variables count and position. steps 3
...
...
for i in range(n):
if(a[i]>100):
count +=1
else:
continue
print(count)
For loop in C++:...
...
for(int i=0;i<sizeof(a);i++) {
if(a[i]>100) {
count++;
} else {
;;
}
}
std::cout << count;
san francisco-based electric skateboard manufacturer boosted used what testing technique to illustrate how their users would navigate their new mobile app prototype?
In order to create links or connections based on personal experience that are pertinent to the current issue, search tactics involve applying a stimulus to retrieve memories.
In this activity, the major goal of experience prototyping is to make it easier to explore potential solutions and to guide the design team toward a better informed creation of the user experience and the physical elements that go into creating it. Before they can see an opportunity for a new company venture, entrepreneurs typically go through three processes: concept creation, creativity, and opportunity recognition. The prototype, which might be a simple drawing or rough model made with crude materials, aids inventors in identifying the flaws and improvements that need to be made in their concept.
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a(n) is a program that simultaneously translates and executes each instruction in a high-level language program. question 67 options: assembler interpreter compiler lexical analyzer
a(n) program known as an interpreter simultaneously interprets and executes each instruction in a high-level language program.
Only binary code can be read by computers and executed. C, Python, and Java are examples of high-level programming languages used by programmers. These languages are simpler to use since they mimic both mathematical notation and human languages. The code created in a high-level language, however, cannot be executed by computers. It needs to be converted into binary code first. Compilers and interpreters are used to do this. Compilable languages are those whose programs are typically created by compilation. The same term is used to describe languages that humans typically interpret. A programming language that is generally interpreted rather than compiled into machine instructions is known as an interpreted language. It is a type of program where the instructions are read by another program and then executed, rather than being carried out directly by the target machine.
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Which category of software maintenance responds to and fixes errors that occur when the software is being used?
A.
corrective
B.
adaptive
C.
perfective
D.
preventative
Answer:
B. Adaptive
Explanation:
According to Baytech Consulting, adaptive maintenance is the modification of software to keep it usable after a change to its operating environment. Many factors can change an application’s environment, including new technical knowledge, hardware and security threats.
what is the minimum overhead to send an ip packet using ppp? count only the overhead introduced by ppp itself, not the ip header overhead. what is the maximum overhead
The Sender may choose not to send the Address and Control Bytes using PPP. two bytes of overhead in the frame are therefore saved. The top layer Protocol to which the wrapped data belongs is disclosed to the Receiver.
It entails directly relating the total number of bytes to the network protocols in use. two bytes of overhead in the frame are therefore saved. The top layer Protocol to which the wrapped data belongs is disclosed to the Receiver. It includes the information transmitted over PPP Link by an upper layer protocol. 1500 bytes is the maximum range.
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what must you do after installing software in order to make sure all of the files and features on your machine are ready to go?
A.
download
B.
virus scan
C.
update
D.
restart
After installing software in order to make sure of the files an features on the machine are ready to go is restart. The correct option is D.
What is a software?Directions that tell a desktop what to do are referred to as software. The whole array of programs, procedures, as well as routines associated with the operation of a computer system is referred to as software.
The word was coined to vary these instructions from hardware, which refers to the physical components of a computer system.
Computer software, also known as software, is a collection of data or computer instructions that instruct the computer on how to operate.
Many applications and Windows Updates require access to core system files, which are constantly active while Windows is running.
The files representing the components must not be in use for a program (or update) to integrate itself into the required Windows Components.
Thus, the correct option is D.
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today’s digital devices use a variety of storage technologies. storage technologies, such as hard disks, store data as particles oriented north or south. a hard disk drive provides multiple for data storage that are sealed inside the drive case to prevent airborne contaminants from interfering with the read-write heads. hard disks are less durable than many other types of storage, so it is important to make a copy of the data they contain. storage technologies store data as a series of dark spots and light spots on the surface of cds and dvds. storage technologies, such as cd- , are used for distributing software and music, but you cannot alter the disc’s contents. technology allows you to write data on a cd or dvd, but you cannot delete or change that data. rerecordable or technology allows you to write and erase data on a cd or dvd. state storage technologies, such as usb flash drives, store data by activating electrons in a microscopic grid of circuitry. a backup is a copy of one or more files that have been made in case the original files become damaged. a good backup plan allows you to restore a device’s operating system, software, data files, settings, accounts, and profiles in case of a massive hardware failure or virus infection. personal computer backups are typically recorded on hard drives, usb flash drives, network servers, and online storage services. an easier way to get a backup of important data files is to use the command to make duplicates and store them on a usb drive. backup utilities such as file history and time machine use a technique called file to make sure that files on two devices are the same. a disk is a bit-for-bit copy of the data from all sectors of a hard disk.
Data is stored as north- or south-facing particles on magnetic storage systems like hard disks. A hard disk drive offers numerous sealed inside the drive case platters for data storage, preventing airborne pollutants from interfering with the read-write heads.
A computer's magnetic storage media is known as a hard disk, often known as a hard disk drive or hard drive. Hard disks are flat, circular plates with a magnetic coating that are constructed of glass or aluminum. Terabytes (trillions of bytes) of data can be stored on personal computer hard disks. On their surfaces, data are kept in concentric tracks. Tiny dots on a spinning disk are magnetized in different ways by a small electromagnet known as a magnetic head, which also reads binary digits by determining the direction of the magnetization of the spots. A hard drive is a device that houses numerous hard disks, read/write heads, a drive motor to spin the disks, a tiny amount of circuitry, and all of these components are enclosed in a metal case.
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How do you get the ios16 update back when you accidentally deleted it?
Answer:
Explanation:
Sign in to your iCloud account. Tap “Choose backup” and then select the backup you made before in iCloud and tap “Restore”. Then wait for the restoration process to get complete.
Which operating system was the first to include a graphical user interface (GUI)?
A.
MacOS
B.
Linux
C.
Chrome OS
D.
Windows
Answer:
D. Windows
Yes, but no.
Explanation:
But, the Xerox Star (the Alto) was one of the first GUI operating systems to be included. But, as per your answer choices, the earliest of them all Windows.
you want to allow your users to download files from a server running the ip protocol. you also want to protect access to the files by requiring user authentication to access specific directories on the server. which ip protocol should you implement to provide this capability?
Answer:
depends
Explanation:
_____ are pieces of information that can be sent to a function
Parameters are pieces of information that can be sent to a function.
What is a function parameter?A function parameter is a special kind of variable which is used in a function by a software developer (programmer) to point to a data that is provided as input into the function.
This ultimately implies that, a function parameter is always capable of passing data to a function as an input, whenever it is called.
In this context, we can reasonably and logically deduce that a parameter is any information that can be passed to a function when it is called.
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Why does a dilemma make your decision-making more complex?
The reason why dilemma make your decision-making more complex is that they do have effects in a person such as:
Feeling of disappointment.Feeling of confusion.Feeling of anxiety, distress and others.What is a decision-making dilemma?Any alternative that requires the agent to violate or compromise on their ethical norms presents an ethical problem in a decision-making situation.
The primary problem with an ethical conundrum is that it does not provide a clear answer that would be in line with ethical standards. People have confronted these problems throughout human history, and philosophers have sought and attempted to discover solutions.
Therefore, based on the above, dilemma is due to the fact that one has different alternatives to choose from and this makes one confused.
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write the definition of a class named weatherforecast that has the following methods: • an init method that initializes the following attribute variables: an attribute variable named skies should be assigned an empty string. an attribute variable named high should be assigned the value 0. an attribute variable named low should be assigned the value 0. • a method named set skies that accepts an argument that should be assigned to the attribute variable skies. • a method named set high that accepts an argument that should be assigned to the attribute variable high. • a method named set low that accepts an argument that should be assigned to the attribute variable low. • a method named get skies that accepts no arguments, and returns the value of the skies attribute. • a method named get high that accepts no arguments, and returns the value of the high attribute. • a method named get low that accepts no arguments, and returns the value of the low attribute.
The program for the definition of a class named weatherforecast will be:
class WeatherForecast:
#method that initializes the attribute variables:
def __init__(self):
self.skies=""
self.high=0
self.low=0
# argument's value is assigned to the attribute variable skies.
def set_skies(self, skies):
self.skies=skies
# argument's value is assigned to the attribute variable high.
def set_high(self, high):
self.high=high
# argument's value is assigned to the attribute variable low.
def set_low(self, low):
self.low=low
# returns the value of the skies attribute
def get_skies(self):
return self.skies
#returns the value of the high attribute
def get_high(self):
return self.high
#returns the value of the low attribute
def get_low(self):
return self.low
What is a program?A program is a precise set of ordered operations that a computer can undertake.
The program in the modern computer described by John von Neumann in 1945 has a one-at-a-time series of instructions that the computer follows. Typically, the software is saved in a location accessible to the computer.
In this case, the program is illustrated above based on the information.
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Which logical address is responsible for delivering the ip packet from the original source to the final destination, either on the same network or to a remote network?.
The IP packet field holding the IP address of the workstation from which it originated is known as the source IP address. The IP packet field hold to addressed is known as the destination IP address.
A router's or server's software will assign an IP address, which is a logical address that may occasionally change. For instance, a laptop typically gets a new IP address when it first starts up in a different hotspot.
How can the result be determined?
The flow of the program is as follows. When the user presses the button, the application prints "ouch" without the quotes.
This operation is on his third line in the program. So the result is this hurts when the user right clicks.
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Which type of system software manages, analyzes, configures, and maintains hardware?
A.
operating systems
B.
utility programs
C.
device drivers
D.
graphical user interfaces
Answer:
b
Explanation:
HAHAHAHQHAHAHAHAHAHHAHQHQHAHQHAHQHAHAH
What happened to the patent awarded to Mauchly and Eckert?
The thing that happen to the patent awarded to Mauchly and Eckert is that the business was sold to Remington Rand in 1950. Remington Rand ultimately combined with Sperry Corporation to form Sperry Rand, which is still in business today as Unisys.
What is the Arguments about patents about?The ENIAC patent held by Mauchly and Eckert was declared invalid by the U.S. Federal Court in October 1973 for a number of reasons. Some related to the interval between the First Draft's publication and the patent filing date (1947).
The Electronic Numerical Integrator and Computer (ENIAC), the first general-purpose electronic digital computer finished in 1946, is said to have been credited to scientists such as John William Mauchly and J. Presper Eckert.
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you have an azure subscription that includes a virtual machine named vm1. you need to protect vm1 by using azure backup. which azure resource should you create first?
To protect my virtual machine named vm1 using azure backup, the azure resource to be created first is the recovery services vault.
What is Azure?
Azure is a cloud-based computing service provided by Microsoft Corporation. Services provided include computing, storage, analytics, and networking services. To do this, an Azure subscription is required. The subscription provides a logical container that holds the details of all your resources like virtual machines (VMs), databases, and more.
In using Azure back up. The following steps are as follows:
Create a recovery services vault.Modify storage replication.Apply a backup policy.Create a custom policy.Trigger initial backup.Verify backup job status.
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when you view the source code for a page that’s displayed in a browser, you see only the initial html for the page. the initial html for the page, along with the javascript if it’s stored in the html file. html for the page that reflects changes made to the dom by the javascript. html that reflects changes made to the dom by the javascript, along with the javascript if it’s stored in the html file.
the first version of the page's HTML, together with any JavaScript that may be present in the HTML file. HTML for the webpage that displays DOM changes
HTML lacks intelligence on its own since it is incapable of doing mathematical operations, determining whether a form has been completed correctly, or making judgments based on how a website visitor interacts with it. In essence, HTML enables users to read text, view images, watch videos, and click links to access other web sites with additional text, images, and videos. You need JavaScript to give your web pages intelligence so they can reply to site users.
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why do we use while loops in javascript? to break out of some block of code to repeat some code while a condition is true to do something if a condition is true to repeat something for a fixed number of times
We use while loops in javascript to repeat something while a condition is true. Hence option (2) is correct answer i.e "to repeat something while a condition is true"
Javascript is a scripting language that is used in web-based application development. We use while loops in javascript to repeat something until condition is true.
The syntax of while loops is given below:
while (condition) {
// code block get executed while condition is true.
}
for example, the below given while loops continue until the variable i become less than 10.
let text = "";
let i = 0;
while (i < 10) {
text += "<br>The iteration is " + i;
i++;
While the other conditions are false because:
We use break statement to break out some piece of code in the code block. We use if statement to check condition is true or false. We use for loop to repeat something or a block of code for fixed number of times.
The complete question is given below:
" We use while loops in javascript
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