Consider the regular expressions:

R1 = (01)* (0*1*) (10)
R2 = (101)* (01)*
R3 = (10) (01*)*(01)
R4 = 10(R2*)|R3

Recall that, for a list of regular expressions, the function getToken() returns the next token from the input that matches one of the regular expressions. If there is more than one match, the longest match is returned. If there is more than one longest match, the token with the longest match that appears first in the list is returned. If there is no match, ERROR is returned. If the function getToken() is called once on input 1000101, it will return:

a. R1
b. R2
c. R3
d. R4
e. ERROR

Answers

Answer 1

Answer:

c. R3

Explanation:

For R1;

there are 10 matches, after these 10 no matches occur again

for R2;

this also does not match more than 10 as we have in R1

for r3;

R3 has the longest match. Its matching can be done 1000101 times.

for r4;

The whole of r4 can be matched.

Error;

we cannot have an error because matches exist.

so in answer to this question we pick R3 as the solution because there are more than one longest march and the one returned in the list is that which appeared first. R3 came first

Answer 2

In this exercise we have to use computer knowledge to identify which is the correct sequence of code that best corresponds to the given question, in this way we have that the correct alternative is:

[tex]c. R3[/tex]

So analyzing the first alternative, we find;  

For R1, there are 10 matches, after these 10 no matches occur again.

So analyzing the second alternative, we find;

For R2, this also does not match more than 10 as we have in R1

So analyzing the third alternative, we find;

R3 has the longest match. Its matching can be done 1000101 times.

So analyzing the fourth alternative, we find;

For R4, the whole of r4 can be matched.

So analyzing the fifth alternative, we find;

Error; we cannot have an error because matches exist.

So in answer to this question we pick R3 as the solution because there are more than one longest march and the one returned in the list is that which appeared first.

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Related Questions

The computer scientists Richard Conway and David Gries once wrote: The absence of error messages during translation of a computer program is only a necessary and not a sufficient condition for reasonable [program] correctness. Rewrite this statement without using the words necessary or sufficient.

Answers

Answer:

A computer program is not reasonably correct if it has no error messages during translation.

 

Explanation:

First, we need to understand what the statement means, and we also need to identify the keywords.

The statement means that, when a program does not show up error during translation; this does not mean that the program is correct

Having said that:

We can replace some keywords as follows:

absence of error messages := no error messages

Is there an alternative website of https://phantomtutors.com/ to get guidance in online classes?

Answers

Answer:

The website is

classroom

Explanation:

Analyzing Types of Graphics
In which situation would a floating image be more useful than an in-line image?
O You want the image to stay within a specific paragraph of text.
O You want the image to come from a gallery of photos in your camera.
You want the image to be on the final page no matter what happens to the text.
O You want a screen-capture image of a software program on your computer.

Answers

Answer:you want the image to be on the final page no matter what happens to the text.

The situation that a floating image be more useful than an in-line image when you want the image to be on the final page no matter what happens to the text.

What helps in float image?

The use of Cascading Style Sheets is known to be a float property that often functions to help place images on a web page.

Conclusively, given the situation above, that a floating image be more better than an in-line image only if you want the image to be on the final page no matter what occurs in the text.

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Assume a future where security counter measures against DoS attacks are much more widely implemented than at present. In this future network, anti-spoofing and directed broadcast filters are widely deployed. Also, the security of PCs and workstations is much greater, making the creation of botnets difficult. Do the administrators of server systems still have to be concerned about, and take further countermeasures against, DoS attacks? If so, what types of attacks can still occur, and what measures can be taken to reduce their impact? Explain in detail with valid diagram and example.

Answers

Answer:

yes administrators have to be concerned

Explanation:

It is necessary for countermeasures to be taken against DoS attacks

The types of attacks that can still occur are:

If the network connection get to be overloaded,  there could be flash crown of this computer system and fraudulent activities maybe initiated. By flash crowd  we mean that the there is a great deal of traffic on the system and this could cause the network connection to be destroyed.

To reduce the impact of this kind of attacks,

1. there should be enough or excess network bandwidth  and distributed servers should be replicated if there is a possibility that network could get to be overloaded.

2. restriction is more commonly done on sporting sites. Restriction brings about an increase in implementation cost.

3. The impact of this type of attack can be reduced by stopping unwanted traffic throught the implementation of filters

4. Use strong antivirus on computer sytems that are used to connect to the internet

Give me good answers

1- what is the money?

2- what is the wealth?

How can it be used for good

Answers

Answer:

Money is currency

Explanation:

Is is how you pay for items

What is your favorite LEGO set

Answers

Answer:

star wars death star....

i like any of them they are all so cool lol

Def locate_substring(dna_snippet, dna): This function takes in two strings, dna_snippet and dna, where dna_snippet is a substring of dna, and returns all locations of the substring as a list of integers. In other words, dna_snippet may exist in multiple locations within dna; you should return the beginning index position of each occurrence of dna_snippet inside of dna. Example: * Sample DNA snippet (substring): "ATAT" * Sample DNA string: "GATATATGCATATACTT" * The returned position list: [1, 3, 9]

Answers

Answer:

In Python. The function is as follows:

def locate_substring(dna_snippet, dna):

   res = [i for i in range(len(dna_snippet)) if dna_snippet.startswith(dna, i)]  

   print("The returned position list : " + str(res))

Explanation:

This iterates defines the function

def locate_substring(dna_snippet, dna):

Check for all occurrence

   res = [i for i in range(len(dna_snippet)) if dna_snippet.startswith(dna, i)]  

print all occrrence

   print("The returned all position list : " + str(res))

Following is the Python program to the given question.

Python

According to the question,

DNA Series: GATATATGCATATACTTDNA

Snippet: ATAT

Program: def locate_substring (dna_snippet, dna):

start = 0 while True: start = dna.

find(dna_snippet, start) #finding the first occurrence of dna_snippet in dna.

if start == -1: return # if dna.find() returns -1 yield start #Resumes next execution start += 1dna=input ("Enter the DNA sequence: ") dna_snippet=input

("Enter the DNA snippet: ") print(list(locate_substring(dna_snippet,dna )))

Program Explanation: Defining a function.

An infinite loop is being utilized just to produce the indexes from which dna snippet begins.

Determining the initial occurrence of dna snippet inside dna. storing the new occurrences of dna snippet throughout the starting point.

Whenever dna.find() returns minus one, it means there was no occurrence identified and the method should be exited.

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See the lseek_example.c file. Modify the lseek_example.c, such that it reads from an input file (named "start.txt") and will print to an output file (named "end.txt") every (1+3*i)th character, starting from the 1st character in the input file. In other words, it will print the 1st character, then skip 2 characters and print the 4th one, then skip 2 characters and print the 7th one, and so on.
For instance, for input file:
ABCDEFGHIJKLM
It will output:
ADGJM
Iseek_example.c file contant:
// C program to read nth byte of a file and
// copy it to another file using lseek
#include
#include
#include
#include
void func(char arr[], int n)
{
// Open the file for READ only.
int f_read = open("start.txt", O_RDONLY);
// Open the file for WRITE and READ only.
int f_write = open("end.txt", O_WRONLY);
int count = 0;
while (read(f_read, arr, 1))
{
// to write the 1st byte of the input file in
// the output file
if (count < n)
{
// SEEK_CUR specifies that
// the offset provided is relative to the
// current file position
lseek (f_read, n, SEEK_CUR);
write (f_write, arr, 1);
count = n;
}
// After the nth byte (now taking the alternate
// nth byte)
else
{
count = (2*n);
lseek(f_read, count, SEEK_CUR);
write(f_write, arr, 1);
}
}
close(f_write);
close(f_read);
}
// Driver code
int main()
{
char arr[100];
int n;
n = 5;
// Calling for the function
func(arr, n);
return 0;
}

Answers

Answer:

See the lseek_example.c file. Modify the lseek_example.c, such that it reads from an input file (named "start.txt") and will print to an output file (named "end.txt") every (1+3*i)th character, starting from the 1st character in the input file. In other words, it will print the 1st character, then skip 2 characters and print the 4th one, then skip 2 characters and print the 7th one, and so on.

For instance, for input file:

ABCDEFGHIJKLM

It will output:

ADGJM

Iseek_example.c file contant:

// C program to read nth byte of a file and

// copy it to another file using lseek

#include

#include

#include

#include

void func(char arr[], int n)

{

// Open the file for READ only.

int f_read = open("start.txt", O_RDONLY);

// Open the file for WRITE and READ only.

int f_write = open("end.txt", O_WRONLY);

int count = 0;

while (read(f_read, arr, 1))

{

// to write the 1st byte of the input file in

// the output file

if (count < n)

{

// SEEK_CUR specifies that

// the offset provided is relative to the

// current file position

lseek (f_read, n, SEEK_CUR);

write (f_write, arr, 1);

count = n;

}

// After the nth byte (now taking the alternate

// nth byte)

else

{

count = (2*n);

lseek(f_read, count, SEEK_CUR);

write(f_write, arr, 1);

}

}

close(f_write);

close(f_read);

}

// Driver code

int main()

{

char arr[100];

int n;

n = 5;

// Calling for the function

func(arr, n);

return 0;

}

Explanation:

17
Select the correct answer.
What is the key length of each key in triple DES?
OA 168 bits
ОВ.
56 bits
128 bits
OD
256 bits
OE.
192 bits

Answers

Answer:

OB

Explanation:

bc i said lol

bc i said lol to be 128 bits

Your co-worker who went to UCLA tells you that DHCP is not enabled at your new job, so you should just use the same IP address that you have at home to connect to the internet. He told you it should work because your computer is communicating with a unique public IP address at home, so no other computer in the world would have it. When you try this, your computer does not have internet access. Give two reasons why?

Answers

Answer:

1. internet connection is not enabled on the computer.

2. The DHCP server in the company is not enabled as well.

Explanation:

For a user to access the internet, the computer must have a public IP address that is either assigned to it by a service provider or dynamically from the DHCP server in the computer. In the case of the former, the user just needs to enable the internet connection to obtain the unique IP address.

If the DHCP server or the internet connection is not enabled, the user would not have access to the internet.

Which of the following statements is false?


Copyright exists the moment a work is created.


Copyright protects intellectual property such as text, art, film, music, or software.


Omitting the © copyright symbol means your work is not copyrighted.


Copyright is free.


You are not required to register your copyright.

Answers

Everything is false except the third one :)

It is false that omitting the © copyright symbol means your work is not copyrighted. The correct option is C.

What is a copyright?

Original works of authorship are protected by copyright, a type of intellectual property, as soon as the author fixes the work in a tangible form of expression.

The creators of the works of expression typically control the copyrights, however there are some significant exceptions: When an employee produces a work while employed, the employer is the rightful owner of the copyright.

Some individuals think that a work isn't covered by copyright law if it doesn't display a copyright emblem. That is untrue. The copyright symbol need not be used in most situations.

Thus, the correct option is C.

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what is memory? explain types of memory?​

Answers

Memory is the electronic holding place for the instructions and data a computer needs to reach quickly. It's where information is stored for immediate use. Memory is one of the basic functions of a computer, because without it, a computer would not be able to function properly. Memory is also used by a computer's operating system, hardware and software.

Answer:

Memory is the taking personal record of computer of past experience. The types of memory are 1)Read Only Memory 2)Random Access memory

Consider the following code segment, which is intended to create and initialize the two-dimensional (2D) integer array num so that columns with an even index will contain only even integers and columns with an odd index will contain only odd integers.
int[][] num = /* missing code */;
Which of the following initializer lists could replace /* missing code */ so that the code segment will work as intended?
A. {{0, 1, 2}, {4, 5, 6}, {8, 3, 6}}
B. {{1, 2, 3}, {3, 4, 5}, {5, 6, 7}}
C. {{1, 3, 5}, {2, 4, 6}, {3, 5, 7}}
D. {{2, 1, 4}, {5, 2, 3}, {2, 7, 6}}
E. {{2, 4, 6}, {1, 3, 5}, {6, 4, 2}}

Answers

Answer:

A. {{0, 1, 2}, {4, 5, 6}, {8, 3, 6}}

Explanation:

From the options, we can see that the array is a 3 by 3 array and the array index (whether row or column) begins at 0.

So, the column index for this array is 0, 1 and 2.

Column number 0 and 2 will be treated as the even column while column number 1 will be treated as the odd columns.

Of all options (a) to (e), option (a) fits the requirement of the question; hence; (a) answers the question.

Answer:

A

Explanation:

because the index is even

What Is the Purpose of a Web Browser? *

Answers

A web browser takes you anywhere on the internet. It retrieves information from other parts of the web and displays it on your desktop or mobile device. The information is transferred using the Hypertext Transfer Protocol, which defines how text, images and video are transmitted on the web.

Answer:

This is your answer. If I'm right so,

Please mark me as brainliest. thanks!!!

Many types of academic writing require multiple sources ?

True

False

Answers

Answer:

True!

Explanation:

A few types that need them are;

News articles

Narratives

Opinion writes

Etc

Answer: False

Step by Step Explanation:
You could use as many sources as you want :)

Select the true statement about network protocols.A protocol determines how the sending computer notifies the receiving computer about the presence of compressed data.A protocol determines how it will be executed on every networked device.A protocol determines how the sending device notifies the receiving device that there is data to be sent.A protocol is not required for all data transmissions.

Answers

Answer:

A protocol determines how the sending device notifies the receiving device that there is data to be sent.

Explanation:

A database management system (DBMS) can be defined as a collection of software applications that typically enables computer users to create, store, modify, retrieve and manage data or informations in a database. Generally, it allows computer users to efficiently retrieve and manage their data with an appropriate level of security.

A protocol can be defined as a standard set of rules established by the regulatory agencies to determine how data are transmitted from one network device to another.

Generally, the standard Internet communications protocols which allow digital computers to transfer (prepare and forward) data over long distances is the TCP/IP suite.

A protocol determines how the sending device notifies the receiving device that there is data to be sent, regardless of any difference in terms of structure or design.

Very large storage system that protects data by constantly making backup copies of files moving across an organization's network is known as ...

Answers

Answer:

RAID is a data storage virtualization technology that combines multiple physical disk drive components into one or more logical units for the purposes of data redundancy, performance improvement, or both.

Explanation:

RAID is a data storage virtualization technology that combines multiple physical disk drive components into one or more logical units for the purposes of data redundancy, performance improvement, or both.

What is File system failure?

File system failure refers to disk-related errors that may be due to corrupt files,  disk integrity corruption, file execution policies, bad sectors, etc. These errors may prevent be causing users from accessing or opening files. The first line of defense against a file system failure is a well-defined set of proper system backup and file maintenance procedures.

These errors can be encountered in files such as images, documents, PDFs, movies, etc. In order to protect and provide defense against file system failure, it is important to manage proper backup and file maintenance procedures.

Therefore, RAID is a data storage virtualization technology that combines multiple physical disk drive components into one or more logical units for the purposes of data redundancy, performance improvement, or both.

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((PLEASE HELP ME)) i need to get all my school work done before thursday
------------- are used to navigate between pages and Web sites.

Question 1 options:

Transitions


Animations


Hyperlinks


None of the above

Answers

Answer:

none of the above

Explanation:

Web navigation refers to the process of navigating a network of information resources in the World Wide Web, which is organized as hypertext or hypermedia. The user interface that is used to do so is called a web browser.

please answer soon
Anonymity allows you to have freedom of
the internet
downloads
expression
information

Answers

Answer: Internet, I’m pretty sure about my answer.

Explanation: Anonymous communications have an important place in our political and social discourse.

Answer:

[ Freedom of expression ]

Why?

it was either that or internet but internet just means being able to use it rather than do whatever i guess

Can i get any information on this website i'd like to know what its for ?
https://www.torsearch.org/

Answers

Explanation: torsearch.org is a safe search engine mainly used for dark wed purposes. It does not track your location nor give any personal information.

Write a program that would determine the day number in a non-leap year. For example, in a non-leap year, the day number for Dec 31 is 365; for Jan 1 is 1, and for February 1 is 32. This program will ask the user to input day and month values. Then it will display the day number day number corresponding to the day and month values entered assuming a non-leap year. (See part II to this exercise below).

Answers

Answer:

In Python:

months = ["Jan","Feb","Mar","Apr","May","Jun","Jul","Aug","Sep","Oct","Nov","Dec"]

daymonths = [31,28,31,30,31,30,31,31,30,31,30,31]

day = int(input("Day: "))

month = input("Month: ")

ind = months.index(month)

   

numday = 0

for i in range(ind):

   numday+=daymonths[i]

numday+=day

print(numday)    

Explanation:

This initializes the months to a list

months = ["Jan","Feb","Mar","Apr","May","Jun","Jul","Aug","Sep","Oct","Nov","Dec"]

This initializes the corresponding days of each month to a list

daymonths = [31,28,31,30,31,30,31,31,30,31,30,31]

This gets the day from the user

day = int(input("Day: "))

This gets the month from the user

month = input("Month: ")

This gets the index of the month entered by the user

ind = months.index(month)

This initializes the sum of days to 0

numday = 0

This adds up the days of the months before the month entered by the user

for i in range(ind):

   numday+=daymonths[i]

This adds the day number to the sum of the months

numday+=day

This prints  the required number of days

print(numday)    

Note that: Error checking is not done in this program

hy plzz help me friends​

Answers

Answer:

Ok so RAM is Random-Access-Memory.

RAM can store data just like in a hard drive - hdd or solid state drive - ssd

but the thing is that ram is really fast and data is only stored when RAM chips get power. On power loss your all data will be lost too.

ROM thanslates to Read-Only-Memory - so data in ROM chips can't be modifyed computer can just read the data but not write.

Read-only memory is useful for storing software that is rarely changed during the life of the system, also known as firmware.

Have a great day.

Explanation:

Answer:

Ram which stands for random access memory, and Rom which stands for read only memory are both present in your computer. Ram is volatile memory that temporarily stores the files you are working on. Rom is non-volatile memory that permanently stores instructions for your computer

What is the fastest way to copy the format from one cell to multiple other cells?
Double-click on the Format Painter.
Single-click on the Format Painter.
Use Copy and Paste commands.
Use Cut and Paste commands.

Answers

use copy and paste commands.. i think! hope this hells

Double clicking on the format pointer is the fastest way to copy the format from one cell to multiple other cells. Thus, the correct option is A.

What is Format pointer?

The format pointer holds a value which represents the memory address of an available data item in the file. If the data item from the file becomes unavailable. For example, because it is in a program which has been canceled then the pointer format is considered to hold a value which is incompatible with the format options.

Use the Format Painter to quickly apply the same formatting, such as the color, font style and size, or border style, to multiple pieces of text or graphics in the data item. With the help of format painter, a person can copy all of the formatting from one object and apply it to another object think of it as copying and pasting for formatting.

Therefore, the correct option is A.

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ANSWER ASAP! 50 POINTS!!!!
If you would like to give another user permissions on your mailbox or to particular folders within your mailbox, which
role should you configure?
O Assignee
O Client
O Delegate
O Manager

Answers

Answer:

The first one/Assignee

Explanation:

Definition:

1.

a person to whom a right or liability is legally transferred.

2.

a person appointed to act for another.

The assignee peace’s it’s the role that works better when you configure about it

An administrator wants to restrict access to a particular database based upon a stringent set of requirements. The organization is using a discretionary access control model. The database cannot be written to during a specified period when transactions are being reconciled. What type of restriction might the administrator impose on access to the database

Answers

Answer:

Time of the day and object restrictions

Explanation:

From the question, we understand that the database is not allowed to be accessed at a certain period of time.  

Because this has to do with time (period), the administrator will need to set a time of the day object restriction on the database in order to prevent the users from accessing the database objects

How have newspapers and magazines adapted to digital technology?

Answers

Answer:

Most newspapers now have online editions. Subscription models have gone beyond print-only into digital-only and print-digital combinations -- and as print-only circulation is dropping, digital and combination circulation is on the rise.

Use the drop-down menu to complete each statement. First, calculate the time spent doing each activity _____ . Next, multiply each category by ____ . Then, ___ the totals. Last, subtract the total from ____ .

Answers

Answer:1. Every day 2. 7 3. add 4. 168

Explanation:

I got it right on Edge

First, calculate the time spent doing each activity every day. Next, multiply each category by 7. Then, add the totals. Last, subtract the total from 365.

What is the significance of the activity?

The significance of activity may be determined by the fact that it usually enhances your health and lowers the threat of developing several diseases and other abnormal conditions like type 2 diabetes, cancer, and cardiovascular disease.

According to the context of this question, if you are required to calculate the time spent doing each activity in each day. You are required to make a chart that represents all such activities followed by multiplication. Then, you are considerably required to add the totals followed by subtracting the total from the total number of days in a year.

Therefore, first, calculate the time spent doing each activity every day. Next, multiply each category by 7. Then, add the totals. Last, subtract the total from 365.

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WHY
is communication Important
in
space​

Answers

Answer:

Communication is vitally important to astronauts while they are in space. Not only does it allow them to talk to their friends and family back home, it also allows them to communicate with the team of experts on the ground that helps them carry out their mission safely.

List 3 clinical tools available in the EHR and discuss how those benefit the patient and/or the practice

Answers

Thor Odin and Aries the threes listed powerful

User ideas for ro blox?

Answers

Answer:

You can put random people, or something you like to do, like Soccer2347 (that was just an example) or your favorite animal, Horse990. But Rob lox has to approve it first

Explanation:

Answer:

You can do a lot of usernames despite the fact that a lot of them have also been taken already. You can do something like your favorite food, sport, etc, and combine it into a couple words, and then add numbers to the end if the name has been taken already.

There is a nickname feature too which let's you name yourself whatever you want.

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The area of a wall to be tiled in 1.5 metres by 2.5 metres.Tiles are 50cm by 50cmThe tiles are 0.99 each.How much will the tiles cost in pounds In 2013 the most expensive cocktail (made with 1858 Cuvee Leonie cognac) was sold in Australia for $12,000. What would have been the equivalent price just one year later, in 2014? find the value of x. round to the nearest tenth. the diagram is not drawn to scale A scientist is working with a ball that has a small negative charge. This would cause it to be MOST strongly attracted to which object? * Please helpA. a balloon with a large positive charge that is 5 cm awayB. a balloon with a large negative charge that is 5 cm awayC. a balloon with a large positive charge that is 50 cm awayD. a balloon with a large negative charge that is 50 cm away The rectangular box can be constructed from the pattern above. The box has a length of 8 units, a width of 2 units, and a height of 2 units. What is the surface area of the box? Why is Bob Wilson "startled" that Oppenheimer calls the Japanese those poor little people'? Use evidence from the text to support your response. Which government action was taken as a result of the Red Scare during the 1950s?o President Eisenhower increased the size of the armed forces.O Several U.S. Supreme Court justices were removed from office.President Eisenhower encouraged the adoption of isolationist policiesThe House Un-American Activities Committee conducted investigationsASAP If you form 3.28 moles of FeCl3 in a reaction, how many moles of FeCl2 did you start with? SHOW ALL WORK Plz solve x + 4 / x - 3 = 4 , step by step explanation will mark as brainliest Use the attached images as reference. Which phrases correctly describe both accounts? Check all that apply.They are reliable sources.They are unreliable sources.They discuss the start of the Korean War.They demonstrate some degree of bias.They blame the war on North Korea.They blame the war on the United States. Define water store and water flow in your own words. 5. Design an experiment that would help you collect the data you have identified in question four. Identify your independent variable(s), dependent variable(s), treatments, and control. (5 points possible) Compare TWO ways in which destructive relationships influence yourwell-being as opposed to constructive relationships. Which statement BEST describes the relationship between MPF and the cell cycle? For those fluent in Spanish, please help If the radius of a circle is 9 cm, how long is the diameter Research the Iranian hostage crisis and write a paragraph that discusses the course of events. Drag tiles to describe each fraction Tiles may be used once, more than once, or not at all. Jane's cell phone plan is $58 each month plus $0.20 per minute for each minute over 200 minutes of call time. Jane's cell phone bill last month was $67.00. Write an equation that can be used to determine the number of minutes over 200 that Jane was billed. How many minutes over 200 was Jane billed last month? ILL MARK BRAINLIEST IF GOTTEN RIGHT IF YOU DONT KNOW DONT ANSWER