Abstractions in a BNF description that can have two or more distinct definitions, representing two or more possible syntactic forms in the language and this is known to be Nonterminal symbols.
What are these symbols about?Nonterminal symbols are known to be a kind of symbols that one can be able to replaced.
Note that they are often called simply syntactic variables and as such, Abstractions in a BNF description that can have two or more distinct definitions, representing two or more possible syntactic forms in the language and this is known to be Nonterminal symbols.
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Resource _____ let you view, manage, and automate tasks on multiple aws resources at a time.
Resource group let you view, manage, and automate tasks on multiple aws resources at a time.
What are the resource groups?Resource groups is known to be a kind of a group that is said to be the key unit in System Automation that is meant for Multiplatforms.
Note that it is said to be logical containers that are meant for the collection of resources hence, Resource group let you view, manage, and automate tasks on multiple aws resources at a time.
See full question below
Resource _____ let you view, manage, and automate tasks on multiple AWS resources at a time.
A-stores.
B-groups.
C-users.
D-graphs.
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You have configured your Active Directory environment with multiple sites and have placed the appropriate resources in each of the sites. You are now trying to choose a protocol for the transfer of replication information between two sites. The connection between the two sites has the following characteristics:
In the above case, the protocol that meets these requirements is SMTP .
What is SMTP?SMTP or Simple Mail Transfer Protocol is known to be a kind of an application that is needed or that is often used to send, receive, and pass outgoing emails and this exist between senders and receivers.
Hence, in the above case, the protocol that meets these requirements is SMTP.
See the full question below
The link is generally unavailable during certain parts of the day because of an unreliable network provider. The replication transmission must be attempted whether the link is available or not. If the link was unavailable during a scheduled replication, the information should automatically be received after the link becomes available again. Replication traffic must be able to travel over a standard Internet connection. Which of the following protocols meets these requirements? A. IP B. SMTP C. RPC D. DHCP
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You would like to see only the last 15 lines of /home/user/log file on your linux machine. Which command line interface (cli) command would you use?
In Linux computer systems, "tail -n 15 /home/user/logfile" is a command line interface (cli) command that should be used to view only the last 15 lines of /home/user/log file.
What is a Linux command?A Linux command can be defined as a software program that is designed and developed to run on the command line, in order to enable an administrator (end user) of a Linux network perform both basic and advanced tasks by entering a line of text.
In Linux computer systems or machines, a command line interface (cli) command that should be used by an administrator (end user) to view only the last 15 lines of /home/user/log file is "tail -n 15 /home/user/logfile."
In conclusion, the above command would reveal only the last 15 lines of /home/user/log file on a Linux computer system.
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Salesforce organizes your data into: A. Objects and records, like tabs and rows on a spreadsheet. B. Objects and fields, like columns on a spreadsheet. C. Fields and records, like different databases. D. Objects and spreadsheets, like columns in a database.
Salesforce organizes your data into option A. Objects and records, like tabs and rows on a spreadsheet.
How does Salesforce organize data?Salesforce is known to be a tool that helps one to put together their your into objects and records and it is said to have standard objects that has been set up and ready for use.
Hence, Salesforce organizes your data into option A. Objects and records, like tabs and rows on a spreadsheet.
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What does it mean when we say that we are currently in the noisy, intermediate-scale quantum computing (nisq) stage?
A noisy, intermediate-scale quantum computing (nisq) stage is said to be the topmost quantum processors that has about 50 to 100 qubits, but are said to be never advanced enough to be able to attain fault-tolerance or even big enough to bring about sustainably in terms of quantum supremacy.
What does NISQ known for?It connote Noisy Intermediate Scale Quantum. Intermediate scale and it is one that tells that one is talking about devices that are said to be large enough, and have about 50 qubits or more that is said to be enough.
Note that it is also one that a person cannot by brute force simulate the quantum system via the use of the most powerful existing digital computers.
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In which directory would a system administrator store scripts that should be run monthly by the cron daemon?
Answer: /etc/cron.monthly
Explanation:
Suppose a computer's login mechanism first asks for a user name, and then for the password, regardless of whether or not the login name is that of a valid user. Herman the Hacker has a list of 10,000 commonly used login names, and a list of 100,000 commonly used passwords. On this computer, there are 100 accounts that have both a login name on the first list and a password on the second list. For simplicity, assume that no other accounts have either a login name or password on these lists.
Herman has written code that can attempt 1000 logins per second on this computer. This program repeatedly chooses a random login name from the first list and a random password from the second list. Compute the expected number of seconds it will take Herman to break into some account on the machine, and identify that number from the list below.
Hint: Since names and passwords are chosen randomly, repetitions are possible. It may indeed be easier to forget what names/passwords have been tried than to keep a list of what has been tried and avoid duplicate attempts. As a result, there is an easy formula for the expected number of tries. If the probability of success on any given try is p, then the expected number of tries until the first success is exactly 1/p.
A. 1.1
B. 100.1
C. 10,000
D. 1000.1
The expected number of seconds it will take Herman to break into (or hack) some account on the machine is 1.1 seconds. (Option A) See the explanation below.
What does it mean to hack a machine?The act of subverting digital systems and networks by gaining unauthorized access to a computer system or account is a popular definition of hacking.
Although hacking is not always harmful, it is most frequently linked to online crime and data theft by cybercriminals.
What is the explanation for the above answer?With 10,000 login names available, we can assume that 100 of them are accurate, as the question suggests.
The likelihood of receiving the proper login name is therefore
P 1 = 100 10,000
P1 = 0.01
In the same vein, among 100,000 password we can assume that only 100 are correct, therefore, the probability of getting the right password is.
P 2 = 100 ÷ 100,000
P2 = 0.001
That that where the probability of success on any given try is p, then the expected number of tries until the first success is exactly 1 ÷ P.
Therefore, the expected number of trials before the first successful login name is = 1÷ P11
= 1 ÷ 0.01
= 100
The above also works for the password:
1÷ P2
= 1 ÷ 0.001
=1000
Therefore, it will take 100+ 1000 = 1100 attempts to finally get the initial login name and password.
Given that Henrietta created programming that allows this computer to try 1000 logins every second.
Therefore, 1100 x 1000 sec = 1.1 sec is the anticipated time it will take Henrietta to gain access to a machine account.
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The expected number of seconds that will take to Herman to break into some account on the machine is 10.000. So Letter C.
Firstly, the probability of finding a correct login name (100) out of first list (1000) = 100/1000 = 1/100.
Second, After finding a login name, exactly one password will correspond to the found login name. As both the events are independent, hence:
Probability(p) = 1/100 x 1/100000 = 1/10000000.
Therefore, expected numbers of tries = 1/p = 10000000.
The code can attempt 1000 tries per second. So the expected numbers os seconds that will take to Herman break into some account will be:
10000000/1000 = 10.000.
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The cell tower’s base transmission station is connected to a mobile ____ station.
The cell tower’s base transmission station is connected to a mobile switching station.
What is a switching station?A switching station is known to be a kind of a substation that is known to be without transformers and it is one that often operate only based or at a single voltage level.
Note that Switching stations are known to be often used as collector and they also acts as a distribution stations.
Hence, The cell tower’s base transmission station is connected to a mobile switching station.
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For the IPv4 CIDR address 153.10.22.56 /22 What is the... Netmask: [ Select ] Network Address: [ Select ] Host Mask: [ Select ] Broadcast Address: [ Select ] Number of possible hosts: [ Select ] Host Number: [ Select ]
Netmask:
The netmask is calculated by putting the number of 1’s equal to the given mask value (here 22).
Netmask = 11111111.11111111.11111100.00000000
= 255.255.252.0
Therefore, the netmask is equal to 255.255.252.0
Network Address:
The network address is obtained by performing the AND operation of the bits in the given IP address with the bits of the netmask.
IP address (153.10.22.56) = 10011001.00001010.00010110.00111000
Netmask (255.255.252.0) = 11111111.11111111.11111100.00000000
Network address = 10011001.00001010.00010100.00000000
= 153.10.20.0
Therefore, the network address is equal to 153.10.20.0
Host Mask:
The remaining or the unused bits in the netmask are used as the host mask. In other words, the host mask is obtained by complementing each bit of the netmask.
Netmask = 11111111.11111111.11111100.00000000
Host mask = 00000000.00000000.00000011.11111111
= 0.0.3.255
Therefore, the host mask is equal to 0.0.3.255
Broadcast address:
The broadcast address is used to send the packages to all the hosts in the network. It is obtained by setting all the bits after the network address to 1.
Network address (153.10.20.0) = 10011001.00001010.00010100.00000000
Broad cast address = 10011001.00001010.00010111.11111111
= 153.10.23.255
Therefore, the broadcast address is equal to 153.10.23.255
The number of possible hosts:
The number of possible hosts is computed as follows:
Possible hosts = 2n, where n is the number of host bits.
Out of the above 2n hosts, 2 are reserved and hence the number of usable hosts is equal to 2n – 2.
Number of hosts = 210 – 2 = 1024 – 2 = 1022
Host number:
Host number is the decimal equivalent of the host bits in the IP address.
Ip address (153.10.22.56) = 10011001.00001010.00010110.00111000
Host bits = 10.00111000
Host number = 29 + 0 + 0 + 0 + 25 + 24 + 23 + 0 + 0 + 0
= 512 + 32 +16 + 8
= 568
Hence, the host number is equal to 568.
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A user has reported that their workstation is running slowly. You perform a reboot of their workstation and receive a S.M.A.R.T. error during the boot-up process. Which of the following actions should you perform FIRST
The actions that one need todo or perform FIRST is to backup the hard drive.
What causes a SMART error?A composition of bad blocks can be a tool that can lead to a SMART error, or when the drive of the system's temperature is known to have gotten too high as a result of poor ventilation or other environmental factors.
Note that The actions that one need todo or perform FIRST is to backup the hard drive. because by doing so, one can be able to retrieve information back.
Hence the answer is correct.
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You wish to use your personal laptop computer at work, but the it department folks will not allow this. the likely reason is that ______.
Answer: Your non-work related use of a laptop could increase vulnerability.
Explanation: Vulnerability is one of the most important and stressed out section in IT, so it's best to decrease that possibility whenever!
I hope this helps!
what is communication ????
Answer:
Communication is the act of giving, receiving, and sharing information -- in other words, talking or writing, and listening or reading. Good communicators listen carefully, speak or write clearly, and respect different opinions.
(≡^∇^≡)
Answer:
Communication is known as the exchange of messages, information, and ideas among parties through any medium.
Explanation:
Communication is an important supporting service that is needed to do our day-to-day work. We use several communication methods and various mediums to communicate with others. Verbal, written, electronic and codes are some examples of communication mediums while Meetings, Discussions, Workshops, Letters, Notice boards, Reports, Loudspeakers, Digital display boards, Road signals, Universally accepted signs, Bell, etc .are some examples of communication mediums Communication is a process that provides information and messages. Communication processSender ⇒ Message ⇒ Medium ⇒Receiver ⇒ Reaction ⇒ Feedback
Write a while loop that adds 5 to userNum while userNum is less than 20, displaying the result after each addition. Ex: For userNum
#The loop that adds 5 to userNum while userNum is less than 20, displaying the result after each addition is given below.
What is a loop?A loop is a set of instructions in computer programming that is repeatedly repeated until a given condition is met.
The sample code related to the above function is given as?// declaring variable userNum
var userNum = 5;
// variable ans to store all answers and print them in single line
// (as expected in sample output)
var ans = "";
// while loop, while userNum is <= 20
// (to get output 25 on screen, we need to run loop till less-than-equal) while(userNum <= 20) {
userNum += 5;
ans += userNum + " ";
}
// displaying final output on console
console.log(ans);
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Given a deque mydq is: 17 55 98, what remains in the deque after the function mydq.pop_back() has been called?
The factor that remains in the deque after the function mydq.pop_back() has been called 17 55.
What do you mean by deque?Deque or Double Ended Queue is known to be a kind or type of queue where there is an insertion and deletion of elements that can be carried from the front or the rear.
Note that the word deque, is known to be a short word for the term double-ended queue. A deque is said to be a list that aids the placing and removal at both ends.
Therefore, based on the above, The factor that remains in the deque after the function mydq.pop_back() has been called 17 55.
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32) Given a dequemyDgis: 17 55 98, what remains in the deque after the function myDQ.pop_back() has been called? a. 17 55 b. 17 C. 98 d. 55 98 33)
Which technology keeps track of heart rate during a workout? (3 points) bathroom scale calculator pedometer wrist monitor
The technology keeps track of heart rate during a workout is pedometer. Option C is the answer
What is pedometer?A pedometer is a device,that is used to know how many steps an individual takes during workout.
It is a good step-meter that keeps the heart rate in check especially during exercise.
Therefore, The technology keeps track of heart rate during a workout is pedometer. Option C is the answer
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9.1% complete Question A government agency is getting rid of older workstations. The agency will donate these workstations, along with other excess computer systems, to nearby schools. Management reminds the systems administrators about data sanitization and security concerns. What actions secure the systems prior to donating to the schools?
The action that can secure the systems prior to donating to the schools is that they should use a data sanitization tool and also replace the hard drive with an empty one .
What is the aim of a data sanitization tool?The aim of data sanitization is for the full or total clearing of devices and getting rid of all sensitive data only if the storage device is not been used or is said to be transferred to another Information system .
Hence, The action that can secure the systems prior to donating to the schools is that they should use a data sanitization tool and also replace the hard drive with an empty one .
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Identify the highlighted vessel. Identify the highlighted vessel. aortic arch superior vena cava brachiocephalic trunk left common carotid artery
The highlighted vessels of aortic arch, superior vena cava brachiocephalic trunk left common carotid artery are known to be given in the image attached.
What is the aortic arch?This is often seen on the top area of the main artery and it is one that often carrying blood away from the human heart.
Hence The highlighted vessels of aortic arch, superior vena cava brachiocephalic trunk left common carotid artery are known to be given in the image attached.
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You have been put in charge of S3 buckets for your company. The buckets are separated based on the type of data they are holding and the level of security required for that data. You have several buckets that have data you want to safeguard from accidental deletion. Which configuration will meet this requirement
The configuration that will meet this requirement is the ones whose AWS Region(s) you are to store on your Amazon S3 data.
What are S3 buckets?A bucket is known to be a kind of a container for objects that saves in Amazon S3.
Note that a person can save a lot of number of objects in a bucket and one can be able to have up to 100 buckets in their account.
Note that Amazon S3 is said to be a kind of program that is made to save, protect, and get back data from “buckets” at any point in time from any place on any device.
Therefore, The configuration that will meet this requirement is the ones whose AWS Region(s) you are to store on your Amazon S3 data.
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You have a user remotely connecting to the corporate network from a client location. They can connect to the corporate network file server. But they cannot access files and folders they need on the client LAN in order to work on their project. What would you enable in order to allow the user to access resources on both networks while the VPN is connected
I don't really get this question but I will go with hotspot
a website that is setup to spread a virus or for some other unethical purpose is called
Answer:
that is anti viruse ok bro or sister
A website that is set up to spread a virus or for some other unethical purpose is called a "malicious website" or "malware-infected website''.
Ask about the website that is set up to spread a virus or for some other unethical purpose.
We know that,
''Malicious website" or "Malware-infected website" websites are designed to exploit vulnerabilities in computer systems, deceive users, or distribute harmful software without their consent.
It is important to be cautious and protect your devices against such threats by using reliable antivirus software and practicing safe browsing habits.
Hence, A website that is set up to spread a virus or for some other unethical purpose is called a "malicious website" or "malware-infected website''.
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In this program you will draw some ASCII art using System.out.println(). Write a program that outputs exactly this drawing. ()_____ // O)___ // ) // _____/
This is known as ASCII Art. The program that give the above output is given below.
What is the program that give the above output?The codes that resort to the above output are given below:
public class ASCIIArt{
public static void main(String[] args) {
System.out.println(" /)___");
System.out.println(" / o|___");
System.out.println(" / )");
System.out.println("/ )___/");
}
}
What is ASCII Art?The 95 readable characters from the total of 128 established by the ASCII Standard from 1963 and ASCII compliant character sets with proprietary extra characters make up ASCII art, a visual design style that leverages computers for display (beyond the 128 characters of standard 7-bit ASCII).
The phrase is also figuratively used to describe all forms of text-based visual art. Any text editor may be used to make ASCII graphics, which is frequently used with free-form languages.
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Full Question:
See attached image.
If a DBMS enforces a DELETE CASCADE option on the referential integrity constraint between SELLER and REALTOR in the HOMETOWN REALESTATE database, what will be the outcome after a user tries to delete the third record (R3, Cliff) from REALTOR
The outcome will be option b: ) CLIENT will have 6 records, AGENT will have 3 records.
What are client records?Client record is known to be a form of a written composition of information that tells and documents the examination , diagnosis or others of a client.
Based on the above scenario, The outcome will be option b: ) CLIENT will have 6 records, AGENT will have 3 records.
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Write an expression whose value is true if all the letters in the str associated with s are all lower case
An expression whose value is true if all the letters in the str associated with s are all lower case is s.islower()
What does expression implies in computer terms?The term "expression" is a term that connote a computer program statement that examines to some specific value.
Note that A Boolean expression can examine to either true or false, e.g. ( money > 100 ).
Hence, An expression whose value is true if all the letters in the str associated with s are all lower case is s.islower()
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A new pet supply company plans to primarily sell products in stores. They need a system that will track their large inventory and keep customer sales records.
Which evaluation factor will be most important when choosing technology for the company?
speed
size
storage
connectivity
The evaluation factor that will be most important when choosing technology for the company is known as storage .
What is an evaluation factor?An Evaluation factor is made up of those key areas that are said to be of importance and tells more about source selection decision.
Note that The evaluation factor that will be most important when choosing technology for the company is known as storage because it is a factor that need to be considered.
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Paul has opened a bespoke tailoring shop. He wants to work online to keep a database of all his customers, send e-mails when garments are ready, create designs, and maintain financial records using software. Which productivity suite should he consider?.
In the case above, the productivity suite that Paul should consider is OpenOffice, G suite.
What is G Suite used for?G Suite Basic edition is known to be a kind of a suite that is made up of collaborative productivity apps that tends to give one's business professional email, shared calendars, and others.
Hence, In the case above, the productivity suite that Paul should consider is OpenOffice, G suite.
See options below
Which productivity suites should he consider?
a. Prezi, G suite
b. G suite, Zoho
c. OpenOffice, G suite
d. Zoho, Apple iWork
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You cannot view the presentation by clicking the slideshow icon on the status bar
________ is the process of converting an algorithm into a language the computer can understand.
Answer:
coding
Explanation:
A process of assigning a code to something for classification. The process or activity writing computer program
When we determine the age of the universe using the Hubble Time, what important simplifying assumption goes into our calculations
The factor that is important in simplifying assumption that goes into our calculations is:
Option a. that the expansion of the universe has been happening at the same rate - neither speeding up or slowing down.What is Hubble time?The Hubble time is known to be a form of an estimate that is given to the age of the universe and it is one that is often based on the Hubble constant.
Note therefore, The factor that is important in simplifying assumption that goes into our calculations is:
Option a. that the expansion of the universe has been happening at the same rate - neither speeding up or slowing down.See full question below
When we determine the age of the universe using the Hubble Time (1/H0), what important simplifying assumption goes into our calculations?
a. that the expansion of the universe has been happening at the same rate - neither speeding up or slowing down
b. that all the galaxies are moving away from us at exactly the same speed, no matter how far away they are
c. that the cosmological principle doesn't hold: the universe is not isotropic and homogeneous
d. that we have accounted correctly for the effects of dark energy e. that the universe is actually contracting instead of expanding
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You need to display the placement of three new function keys on a cell phone prototype. What should you use to illustrate the data
In the case above, one will need an illustration should be use to illustrate the data.
What is considered an illustration?An illustration is known to be a kind of a visual depiction that is known to be often made by an artist and its examples are drawing, sketch, painting, photograph and others.
Note that, In the case above, one will need an illustration should be use to illustrate the data.
Read the scenario, and answer the question. You need to display the placement of three new function keys on a cell phone prototype. What should you use to illustrate the data?
An illustration
Maps
An organizational chart
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Every time a user enters a different web page url into a browser, the same web page appears. what will help in this situation?atask managerbfirewallcanti-malwareddevice manager
Every time a user enters a different web page url into a browser, the same web page appears. the issue that can help is the use of firewall.
What is firewall and how it works?The term firewall is known to be that which helps protect a person's network from attackers.
Note that A firewall shields one's network because it work in a 24/7 filter window, and this is one that often works by scanning the data that tries to enter your network and hinder anything that may act or looks suspicious from getting through.
Hence, in the case above, Every time a user enters a different web page url into a browser, the same web page appears. the issue that can help is the use of firewall.
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