what does a dns server do
A DNS server is a type of server that translate requests for domain names into IP addresses.
What is a DNS server?A DNS server can be defined as a type of server that is designed and developed to translate domain names into IP addresses, so as to allow end users access websites and other internet resources through a web browser.
This ultimately implies that, a DNS server is a type of server that translate requests for domain names into IP addresses.
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Technicians who perform sealed-system service on small appliances must have; Question 13 options: Type I, II, or III certification. Type I or Universal certification. Type II certification. A Universal 609 certification
The technician who performs sealed-system service on small appliances must have Type I or Universal certification. Thus, the correct option is B.
What is a Sealed-system service?A sealed-system service may be defined as those services which are performed by the technician that can be sealed by the product of the company with the mark of OK tested.
Type I certification delivers to those technicians who service, maintain and repair small appliances that incorporate CFCs, HCFCs, or HFCs.
Technicians can hold either Type I or Universal certification which includes Type I to service appliances sheathed under Section 608.
Therefore, it is well described above.
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Students and classes have a _____ relationship
In the above, Students and classes have a many-to-many relationship.
What is many-to-many relationship?A many-to-many relationship is one that often taxes place when a lot of records in a table are linked with a lot of records in another table.
Therefore, In the above, Students and classes have a many-to-many relationship as they are known to have multiple relationship or records.
See options below
a. one-to-one b. one-to-many
c. many-to-one d. many-to-many
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What's an operating system ~
Answer:
Is it software that controls and manages hardware components and translates instructions so that the hardware can do what one instructs it to do
Explanation:
An operating system is a large collection of system software which manages the resources of computer system such as memory, storage, processor, input/output devices alongside acting as an interface between machine and user.
Write an algorithm to calculate the cube of a number
Explanation:
step 1 - Start
step 2 - Input l
step 3 - Cube =l×l×l
step 4 - Print the cube
step 5 - End
Add the following line of code to the end of your script, replacing any function calls: nested_sum( eval(input()) )
The program is an illustration of loops; Loops are program statements used for repetition of operations
How to complete the code?The complete question is added as an attachment
The code written in Python that completes the missing parameters in the question are:
def nested_sum(mylist):
total = 0
for other_list in mylist:
total += sum(other_list)
print(total)
t = [[1,2],[3],[4,5,6]]
nested_sum(t)
nested_sum( eval(input()))
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The digital divide is the difference between careers which depend on technology and those that depend on human intuition and analysis. true or false?
The digital divide is the difference between careers which depend on technology and those that depend on human intuition and analysis is a false statement.
What is the digital divide?The digital divide is known to be a term that connote the gap that exist between demographics and areas that have room to modern information and communications technology (ICT), and those that do not really have room (access) or they do have restricted access.
Therefore, The digital divide is the difference between careers which depend on technology and those that depend on human intuition and analysis is a false statement.
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Which is the preferred means of trapping user input for errors?
Escaping is the preferred method used for trapping user inputs for errors.
HTML (HyperText Markup Language)Most web pages users interact with today are designed based on the rules of HTML. In a web-based environment, a preferred means developers use to trap user input for errors is the escape string. This typically involves using mysql_real_escape_string() when coding.
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Computer science student jones has been assigned a project on how to set up sniffer. What just he keep in mind as part of the process?
In the case above, what just comes to mind as part of the process is option d.
What is sniffer?A sniffer is known to be a kind of a software or hardware tool that gives room for a person to be able to “sniff” or look through one's internet traffic in real time, getting all the data flowing to and from a person's computer.
Therefore, In the case above, what just comes to mind as part of the process is option d.
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Devices that connect to the internet are often categorized into silos. Which silo controls network traffic?
In Computer networking, the silo that controls network traffic are known as switches and routers.
What is a silo?A silo can be defined as a classification which is used to categorize network devices that connect to the Internet.
In Computer networking, the silo that controls network traffic are known as switches and routers because they can be used by a network administrator to control network connectivity and traffic.
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Advancement made
in napier's bones
Answer:
In 1614, Edinburgh-born Renaissance scholar John Napier invented logarithms. A means of simplifying complex calculations, they remain one of the most important advances in the study and practical application of mathematics.
Explanation:
hope this will help
Question 2 A data analyst uses the Color tool in Tableau to apply a color scheme to a data visualization. In order to make the visualization accessible for people with color vision deficiencies, what should they do next
In order to make the visualization accessible for people with color vision deficiencies, he should make sure the color scheme has contrast.
What is a color scheme?A color scheme can be defined as a combination or arrangement of different colors, which are used during the design and development of a software, project, etc.
In this scenario, the data analyst should make sure the color scheme has contrast so as to make the visualization accessible for people with color vision deficiencies.
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how does python show that commands belong inside a python structure?
Python show that commands belong inside a Python structure by using indentation to define the code blocks.
What is Python?Python can be defined as a high-level programming language that is designed and developed to build websites and software applications, especially through the use of dynamic commands (semantics) and data structures.
In Computer programming, Python show that commands belong inside a Python structure by using indentation to define the code blocks.
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When can social security recipients expect the 4th stimulus check 2022.
The date for the social security recipients to expect the 4th stimulus check was from Wednesday, April 13, 2022.
What is the Social Security checks schedule?There is said to be the fourth round of Social Security checks that is known to be coming to every household.
Note that the date for the social security recipients to expect the 4th stimulus check was from Wednesday, April 13, 2022.
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Technicians are testing the security of an authentication system that uses passwords. When a technician examines the password tables, the technician discovers the passwords are stored as hash values. However, after comparing a simple password hash, the technician then discovers that the values are different from those on other systems. What are two causes of this situation
The causes of the situation include:
The systems use different hashing algorithms.One system uses hashing and the other used hashing and salting.How to depict the information?From the information given, the technicians are testing the security of an authentication system that uses passwords.
The technician discovers that the values are different from those on other systems because the systems use different hashing algorithms and one system uses hashing and the other used hashing and salting.
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what is the size of the rc.conf file in bytes
Answer:
It is 281 bytes.
The size of the rc.conf file in bytes is known to be 281 bytes
What is rc conf file?The rc. conf file is known to be a kind of file that often specifies the vital services that needs to be turn on or enabled in course of system startup.
Note that in the case above, The size of the rc.conf file in bytes is known to be 281 bytes.
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An end-user received an email stating his bank account was compromised, and that he needs to click a link to reset his password. When the user visited the site, he recognized it as legitimate and entered his credentials which were captured by a hacker. What type of social engineering attack does this describe
Answer:
A phishing attack
Explanation:
Phishing attack is the process of delivering fake communications that appear to come from a trusted source. It is often done by email. The purpose is to steal personal information such as credit card and login information, or to installing malicious on the victim's PC. Phishing is a widespread sort of cyber assault that everyone should be aware of in order to stay safe.
Phishing in the banking industry seeks to get personal information such as banking logins, PINs, bank account information, and credit card details. Fraudsters utilize this data to gain access to accounts, transfer funds, perpetrate credit card fraud, or sell it on the black market. Occasionally hackers are content just to obtain user's personal information and credit card details for financial benefit. In other circumstances, phishing emails are sent in order to get employee login credentials or other details for use in more hostile assaults against a small group of people or a single firm. Phishing is a sort of cyber assault that everyone should be aware of in order to protect oneself and guarantee organizational email security.
What was the name of the first computer, developed by charles babbage?.
Answer: Analytical Engine
Explanation:
Answer:
analytical engine - 1837
Which set of cisco ios commands instructs the ips to compile a signature category named ios_ips into memory and use it to scan traffic?
A set of Cisco IOS commands that instructs the IPS to compile a signature category with the name IOS_IPS into memory are listed below.
What is a command?A command can be defined as the set of instructions that is used to configure a network device such as a router, so as to make it active on a computer network and enable it perform certain tasks automatically during network communication.
In this scenario, a set of Cisco IOS commands that can be used to instruct the IPS in compiling a signature category with the name IOS_IPS into memory and use it to scan network traffic include the following:
R1(config)# IP IPS signature-category.R1(config-ips-category)# category IOS_IPS basic.R1(config-ips-category-action)# retired false.Read more on commands here: brainly.com/question/17147683
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when connecting to a wireless local area network (wlan), what is the most important fact about the service set identifier (ssid)?
The most important fact about the service set identifier (SSID) is that all the end users and all access points (AP) must be configured with matching SSIDs.
What is SSID?SSID is an acronym for service set identifier and it can be defined as the generic name given to a wireless local area network (WLAN) connection.
In Computer networking, the most important fact about the service set identifier (SSID) is that all the end users and all access points (AP) must be configured with matching SSIDs.
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to link the data from one table to another in an access relational database, a(n) ____ must be common to each table.
To link the data from one table to another in an access relational database, a field must be common to each table.
Want is database?It should be noted that database simply means an organized collection of structured information or data stored in a system.
In this case, to link the data from one table to another in an access relational database, a field must be common to each table.
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Jack is an accountant he can't access the spreadsheet software which is installed on the server what should jack do
Answer:
Ping
Explanation:
Jack should ping the server and check to see if it has crashed. The ping command is a networking utility that determines if an IP address or domain is accessible. Once it is determined, Jack may utilize the data to derive additional inferences. While troubleshooting internet access, pinging is generally the first line of protection. It not only tests connection, but it also counts time and ensures that all Internet Control Message Protocol packets are accountable.
Which is considered the most widely used cloud computing service?
The most widely used cloud computing service is the Amazon web services.
What is cloud computing?It should be noted that cloud computing simply means the on-demand availability of computer resources without direct active management by the user.
In this case, the most widely used cloud computing service is the Amazon web services.
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Mr. Gomez notes that a Private Fee-for-Service (PFFS) plan available in his area has an attractive premium. He wants to know if he must use doctors in a network as his current HMO plan requires him to do. What should you tell him
The thing that he will be told is that he may receive healthcare services from any doctor allowed to bill Medicare.
What is Medicare?Medicare simply means a government national health insurance program in the United States.
In this case, the thing that he will be told is that he may receive healthcare services from any doctor allowed to bill Medicare.
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Suppose a family has had a house fire in which they lost many photos, and they are worried about losing more if they have another. Which of the following is a reason this family may want to digitize their photos? Choose all that apply.
A: to make it easier to e-mail photos to friends
B: to maximize file space on their hard drive
C: to minimize risk of losing photos by backing them up in virtual space
D: to save space in their home
Answer:
C - Minimize the risk of future loss.
Explanation:
All four reasons listed are valid reasons to digitize family photos, but in this instance where this family has lost photos in a house fire before, minimizing the risk of losing photos in the future might be their primary goal.
Sftp uses which mechanism to provide security for authentication and data transfer?
Sftp uses SSH mechanism to provide security for authentication and data transfer.
What are SSH known for?SSH or Secure Shell is known to be a kind of a network communication protocol that helps two computers to be able to communicate and also share their data.
Therefore, one can say that Sftp uses SSH mechanism to provide security for authentication and data transfer.
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of the choices listed, which is the correct protocol to access a remote computer and execute commands?
The correct protocol to access a remote computer and execute the commands is Using the winrs command
What is a remote computer?A remote computer is a computer that a user has no access to physically, but may be able to access it remotely via a network link from another computer.
Therefore, remote computers are connected to another computer via a network link.
Hence, he correct protocol to access a remote computer and execute the commands is Using the winrs command
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Your colleague needs to update details of a large campaign and wants to use structured data files (SDFs) for making these changes. Before uploading everything to Display and Video 360, they ask you to double-check the files. Which setting will cause an error
The setting will cause an error when they set up a single SDF with both line item and insertion order rows.
What are SDF?Structured Data Files (SDF) are known to be a form of spreadsheets that are seen as csv files that is said to be very cheap to make and edit campaigns, insertion orders and others.
Note that The setting will cause an error when they set up a single SDF with both line item and insertion order rows.
See options below
They set up an SDF with rows for both editing and removing line items.
They set up an SDF for modifying inventory sources.
They set up an SDF with 100 line items in a single file.
They set up a single SDF with both line item and insertion order rows.
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isdn is considered to be what type of wan connection?
ISDN is considered to be a type of circuit-switched connection WAN connection.
What is a WAN?WAN is an acronym for wide area network and it can be defined as a telecommunication network that covers a wide range of geographical locations, especially for the purpose of communication between different users in different countries or regions across the world.
Integrated Services Digital Network (ISDN) is considered to be a type of circuit-switched connection wide area network (WAN) connection.
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Network administrators use _____ technology when they need antivirus updates to be automatically downloaded on employees' workstations
Network administrators use push technology if they need antivirus updates to be downloaded on employees' workstations.
What is a network administrator do?Network and computer systems administrators are known to be people who are responsible for the day-to-day running of the operation of a given networks.
Note that in the case above, Network administrators use push technology if they need antivirus updates to be downloaded on employees' workstations.
See options below
a.
push
c.
virtual reality
b.
pull
d.
SaaS
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