Software redundancy techniques

The correct answer is b.) NSFnet.

The NSFnet was a high-speed, cross-country network backbone funded by the National Science Foundation (NSF) in the 1980s. It was created to connect research institutions and universities across the United States and was a key part of the early development of the internet.

The NSFnet played a crucial role in the development of the internet as we know it today.

It helped to popularize the use of the TCP/IP protocol, which is the foundation of modern internet communication, and it provided a platform for the growth and expansion of the internet beyond its initial research and academic roots.

The NSFnet was eventually succeeded by the more commercialized and advanced internet of today.

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Answer:

1.Dont touch anything unless told to do so

2.Avoid sending food at the lab

3.Always listen to instructions before taking an action

4.Dont misbehave at the lab during lesson

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D. features that you will test

The Deliverables section of the test plan indicates the features that are intended to be tested during the testing phase. It lists the items subject to testing so that the development team can be sure to include all desired functionality.

If you have any additional questions or need further assistance, please let me know.

Answer:

Explanation:

this is the image I did it somewhere else so i took a photo then put it here.

Answer:

True

Explanation:

To write the code for this exercise, we must be familiar with Python's computational language.

import random

good_responses = (["That's cool!", "Wow!", "That's great to hear!", "Tell me more"])

bad_responses = (["I'm sorry", "That sad"])

first_name = input("What's your first name? ")

last_name = input("What's your last name? ")

print("Hello {first_name} {last_name}, nice to meet you!")

age = int(input(f"How old are you, {first_name}? "))

if age > 17: print("Wow, you're old enough to vote!")

else: print("Quite young, aren't you.")

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Answer:

Business Premium

Explanation:

Explanation:

1.Artificial intelligence is the simulation of human intelligence processes by machines, especially computer systems.Artificial neural networks and deep learning artificial intelligence technologies are quickly evolving, primarily because AI processes large amounts of data much faster and makes predictions more accurately than humanly possible.

2.A Brief History of Artificial Intelligence

1956 - John McCarthy coined the term 'artificial intelligence' and had the first AI conference. 1969 - Shakey was the first general-purpose mobile robot built. It is now able to do things with a purpose vs. just a list of instructions.

Artificial Intelligence Future

Artificial intelligence is shaping the future of humanity across nearly every industry. It is already the main driver of emerging technologies like big data, robotics and IoT, and it will continue to act as a technological innovator for the foreseeable future.

3.While AI and machine learning are very closely connected, they're not the same. Machine learning is considered a subset of AI.

Answer:

it is unable to permit legitimate communication to pass

Wi-Fi Protected Setup (WPS) is an authentication method that allows you to securely connect a printer to a wireless network with the least amount of effort.

WPS uses a simple push-button or pin-based authentication process to quickly and easily establish a secure connection between the printer and the wireless network.

This eliminates the need to manually enter complex security settings or passphrases, making it easier and more convenient to connect the printer to the network.

WPS is supported by many modern wireless routers and printers, and it is often the recommended method for setting up a secure wireless connection.

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The newaliases command must be used to rebuild the aliases database after making changes to the /etc/aliases file.

In Linux, an utility called netstat is available for tracking and reporting data on network services. Actually, the Netstat command set is a collection of tools for reporting statistics on many parts of your network, such as which programs are using which ports.

The primary command used by this check to determine the CVM or host's NTP synchronization status is "ntpq -pn." To what remote peer or server is remote being synchronized? 127.127.

The alias database is rebuilt using the /etc/aliases file by the newaliases command. It must be launched each time this file is modified for the modifications to take effect. Running this command has the same effect as running sendmail with the -bi parameter.

Therefore the correct answer is newaliases.

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Answer:

I would say A.

Explanation:

Unpickling an object after it has been pickled before saving it to a file or loading it into a program from a file is possible.

An object is transformed into a stream of bytes through the serialization process in order to be stored in memory, transmitted to a database, or written to a file. Its major objective is to record an object's state so that it can be recreated later on. The technique employed to do the reverse is deserialization.

The equality operators == and!= can be used to determine whether two objects have the same data. You must use the identity operators is or is not to determine whether two things are identical.

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Variables declared as final occupy memory.

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Answer:

max = int(input("Enter a max number: "))

a = 1

b = 1

print(a)

print(b)

while a + b <= max:

   c = a + b

   print(c)

   a = b

   b = c

Hold & Wait prioritizes resources and indirectly affects processes while excluding deadlock interruptions.

Hold on a moment. not a preemption. Wait in circles. Avoiding deadlock. By removing any of the four aforementioned conditions, we can avoid deadlock. Take away Mutual Exclusion. Because some resources, like the tape drive and printer, are by nature not shareable, it is impossible to satisfy the mutual exclusion.

Deadlock describes this circumstance. A deadlock avoidance method arranges how each process uses resources so that at least one process is always able to receive all the resources it requires.

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Sam wants to count the number of cells between b1 and b20 that contain numbers in them. The formula that should be used is COUNT(B1:B20). The correct option is a.

The grid-like boxes in an Excel spreadsheet like this one are called cells. On a worksheet, each cell is identifiable by its reference, the column letter, and the row number that crosses the cell's position.

This cell is cell D5 because it is in column D and row 5. In a cell reference, the column is always referenced first. Click the column header only. The number of rows will be displayed in the status bar in the Excel window's lower right corner.

Therefore, the correct option is a, =COUNT(B1:B20).

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The question is incomplete. Your most probably complete question is given below:

=COUNT(B1:B20)

=ROUND(A5,2)

=DATE(1998,1,12)

=DATEVALUE("01/01/2017")

Answer:

The speed of the wind is 355 mph.

Explanation:

IFERROR(B20*B18," ") is the proper formula when trace precedents are utilized.

In its most basic sense, a worksheet is just a paper item that is used for working. They are frequently used in school, finance, and tax and may be to complete a job, log, or accompany work.

Let's say that B21 is now multiplying B18*B19 (Number of Admissions by Ticket Location).

elect B21 cell and goto Formulas toolbar and under Formula Auditing section click on Trace Precedents

The calculation in B21 should read B18 * B20.

When an error is found, the IFERROR function "catch" it and generates a new formula or result.

Use the IFERROR function to trap and handle errors produced by other formulas or functions. IFERROR checks for the following errors: #N/A, #VALUE!, #REF!, #DIV/0!, #NUM!, #NAME?, or #NULL!.

Use below formula in B21 to catch errors

=IFERROR(B20*B18," ")

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Answer:

1. Transport: Driving a car or using public transport has a direct effect on the environment due to emissions of carbon dioxide, nitrogen oxides, and other pollutants. These emissions are generally considered to be negative since they contribute to air pollution and climate change.

2. Consumption: Buying and using consumer goods can have a negative effect on the environment due to the energy used in production, transportation, and disposal. Additionally, the materials used to make the goods can be harmful to the environment if not disposed of properly.

3. Waste: Producing, storing, and disposing of waste can have a significant effect on the environment. Improper disposal can lead to leaching of toxic chemicals into the soil and water, as well as release of methane gas into the atmosphere. The effects of improper waste management are generally considered to be negative.

Explanation:

Query is used to create a subset of data that matches certain criteria and that can be saved for future reference or use.

You can build four different sorts of queries using the query wizard to access and change the data in your database. You can generate the following types of queries using the query wizard: First Question. Give the Base's Name and Address. Query Wizard should be used. Click Query Wizard under the Queries group on the Create tab. Click Simple Query Wizard, then OK, in the New Query dialog box. You can use the Query Wizard to automatically create Query Pairs from a pair of Connections. This is helpful for business analysts, SMEs, and other team members who aren't familiar with SQL but are knowledgeable about data and business rules.

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Answer:

The algorithm will output the length of the string "Please do not walk on the grass", the first 11 characters of the string, and the last 11 characters of the string. For example, the output might look something like this:

35

Please do no

walk on the g

Snort has the following five default actions: alert, log, pass, activate, and dynamic. Alert: Use the chosen alarm mechanism to create an alert, after which you should log the packet. Record – record the packet. Disregard the packet and pass. A dynamic rule is activated, followed by an alert.

The information about the rule's action, protocol, source, and destination IP addresses and net masks, as well as the source and destination ports, is all contained in the rule header.

Therefore, An alert/notification system's main goal is to promptly notify responders of potential dangers or emergency situations and to give instructions on how to handle any alerts.

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Answer:

To write these queries using Oracle SQL sub selects, the following syntax can be used:

1. Return the card number, first name, last name, and average late fee of each customer. Name this column as "Fee".

SELECT card_number, first_name, last_name, AVG(late_fee) AS "Fee"

FROM customers

GROUP BY card_number, first_name, last_name;

2. Return the authors whose first names are shorter than all last names.

SELECT *

FROM authors

WHERE LENGTH(first_name) < ALL (SELECT LENGTH(last_name) FROM authors);

3. Return the first 10 borrowing which late fee is unknown.

SELECT *

FROM borrowings

WHERE late_fee IS NULL

AND ROWNUM <= 10;

Explanation:

In these queries, sub selects are used to select specific data from a table and use it in the main query. For example, in the second query, a sub select is used to select the length of all last names from the authors table, and this data is then used in the main query to filter the authors whose first names are shorter than all last names. In the third query, a sub select is used to filter the borrowings with unknown late fees, and the main query is used to limit the result to the first 10 rows.

open a second spreadsheet

click on each cell

Answer:

Establish a connection with a Command and Control server

Launch a mass-mail spam attack

Launch a Distributed Denial of Service (DDoS) attack

Explanation:

The computer that has been infected and become part of a botnet will need to establish network connection to the "Command and Control" server of the bot-net.  Then it might participate in whatever attack the control instructs.

The actions that can be initiated by the attacker are

Malware is a catch-all term for viruses, trojans, and other damaging computer programs that threat actors use to infect systems and networks and access sensitive data. Malware is software designed to obstruct a computer's regular operation.

The computer that has been infected and joined a botnet must create a network connection to the bot-"Command net's and Control" server. After that, it might take part in whichever attack the control orders.

Therefore, the correct options are:

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The question is incomplete. Your most probably complete question is given below:

1. Launch a Distributed Denial of Service (DDoS) attacks

2. Establish a connection with a Command and Control server

3. Launch a mass-mail spam attack

4. Launch a tailgating attack

Answer:

Software redundancy techniques are methods used to ensure the reliability and availability of software systems. These techniques involve adding extra layers of functionality or data to a software system, so that if one component fails, the system can still function using the redundant component. This can improve the reliability and availability of the system, and reduce the likelihood of failures or disruptions.

Some examples of software redundancy techniques include:

Overall, software redundancy techniques are an important way to improve the reliability and availability of software systems, and to reduce the impact of failures or disruptions on the operation of the system.

The clustering systems should you implement to ensure the standby server only works when the other server fails is asymmetric. The correct option is d.

Clusters are collections of managed servers that take part in workload distribution. Nodes or individual application servers can be found in a cluster.

A node is often a real computer system running one or more application servers and having a unique host IP address. Modern computer clusters must make use of clustered file systems.

Therefore, the correct option is d. Asymmetric.

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Answer:

Explanation:

Radio works by transmitting and receiving electromagnetic waves. The radio signal is an electronic current moving back and forth very quickly. A transmitter radiates this field outward via an antenna; a receiver then picks up the field and translates it to the sounds heard through the radio.