message authentication codes (mac) and digital signatures both serve to authenticate the content of a message. which of the following best describes how they differ? (a) a mac can be verified based only on the message, but a digital signature can only be verified with the secret key used to sign the message (b) a mac can be verified based only on the message, but a digital signature can only be verified with the public key of the party that signed the message. (c) a mac can only be verified with the secret key used to generate it, but a digital signature can be verified based only on the message. (d) a mac can only be verified with the secret key used to generate it, but a digital signature can be verified with the public key of the party that signed the message.

Answers

Answer 1

Digital signatures employ a private/public key pair, as opposed to MACs, which use private keys to allow a message receiver to confirm that a message hasn't been altered during transmission. Thus, the right response is (d).

What exactly are private and public keys?

Some people have compared public keys to a company's website address in that they are both public and easily searchable by anyone. Public keys for asymmetric encryption can be distributed among system users. The sender encrypts his message using the public key once he has it.

Each public key is accompanied by a different private key. A private key is similar to a front door key of a building that only you have a copy of. One of the primary distinctions between the two kinds of keys is outlined by this. Only you can enter through the front door thanks to the private key. You utilize this private key to decipher messages that are encrypted.

These keys work together to protect the confidentiality of the sent data. Without the associated private key, a message encrypted with the public key cannot be deciphered.

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Related Questions

you have micro services that need to communicate with each other without holding on either one. one service will receive an id and return a message once the job is complete. which communication framework should be used?

Answers

Use a RESTful architecture for both, ping the service with a GET after sending the ID through a POST, and repeat until a response is ready.

What are the components of RESTful architecture?

Simply said, a communication strategy framework is a tool for organizing communication with one's vendors, contractors, staff members, etc. A set of guidelines for developing web services are specified by the software architectural style known as REST. RESTful web services are defined as those that adhere to the REST architectural style.

Through the use of a uniform and predetermined set of rules, it enables requesting systems to access and modify web resources. The following are REST architectural elements: Data Elements, which contain control data, representation, resource metadata, resource identifier, and representation metadata. components, which include client, server, cache, resolver, and tunnel.

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Curtis decided to leave his smartphone in his car as he heads out for a day long hike. This is an example of a ______________.
A. digital detox
B. technology addiction
C. digital footprint
D. repetitive strain injury

Answers

Curtis decided to leave his smartphone in his car so he could concentrate on his day-long excursion. This is how a (A) digital detox would resemble.

What is a digital detox?

A digital detox is a period of time during which a person chooses not to use digital gadgets including computers, smartphones, and social media sites.

As people spend more time online and using digital gadgets, this type of detoxification has become more popular.

In order to focus on his day-long journey, Curtis made the decision to leave his smartphone in his car.

A digital detox would look somewhat like this.

According to a Deloitte poll from 2015, 59% of smartphone users visit social media sites within 30 minutes of waking up and five minutes before going to bed.

Therefore, Curtis decided to leave his smartphone in his car so he could concentrate on his day-long excursion. This is how a (A) digital detox would resemble.

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Say that a write-once Turing machine is a single-tape TM that can alter each tape square at most once (including the input portion of the tape). Show that this variant Turing machine model is equivalent to the ordinary Turing machine model. (Hint: As a first step, consider the case whereby the Turing machine may alter each tape square at most twice. Use lots of tape.)

Answers

We demonstrate how a write-twice TM can be used to replicate a regular TM before constructing a try writing TM from the write-twice TM.

The write-twice TM duplicates the entire tape to a new section of the tape to the right of the section that was used to hold the input, simulating one step of the original machine. Each tape square is changed twice throughout the copying process—once to write the character for the first time and again to signify that it has been copied, which happens on the following step when the tape is recopied. The tape content is updated based on when the cells at or near the designated spot are copied.

This copying process can be thought of as simulating one phase of an ordinary TM since while replicating the cells at or near the designated point, the tape content is changed in accordance with the original TM's regulations. (Slightly technical note: We also need to know where the tape head for the original TM is located on the duplicated symbol.)

Function precisely as previously, with the exception that each column on the prior tape is now represented by two cells, to execute the simulation using a write-once machine. The first of these contains the tape symbol for the original machine, while the secondary is for the sign applied during copying. As a result, the computer does not receive the input in the format with two cells per symbol. The duplicating markings are placed directly above the input symbol during the first tape copy.

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A ________ is the richest communication medium.
a. A phone call
b. A memo
c. An e-mail
d. A face-to-face conversation

Answers

Option D I think hope this helps you:)

What is not a TIA/EIA recognized cabling type that can be used for horizontal cabling?Unshielded twisted pair UTP,Fiber optic,Shielded twisted pair,RG-6 Coaxial

Answers

The option that is not a TIA/EIA recognized cabling type that can be used for horizontal cabling is option D: RG-6 Coaxial.

What is a RG6 coaxial cable?

The three main types of network cables used in communication systems are twisted pair, coaxial cables, and fiber optic cable. They differ in cable construction, bandwidth, speed, and applications. Both our daily lives and the effort of building networks will benefit from each of them.

One can say that residential or commercial installations, the RG-6 is generally used for the transmission of cable and satellite signals. This coax cable is still the material of choice for relaying cable television signals since it is flexible and thin, making it ideal for wall or ceiling installations.

Therefore, for the case above and any kind of CATV, satellite, TV antenna, or broadband internet, RG 6 is advised. For the majority of CCTV systems and other analog video streams, RG 59 is often preferable. The frequency ratings that your equipment uses are essentially what you need to think about.

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the best description of the purpose of think-aloud protocols is that they are used to determine

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The purpose of think-aloud protocols is that they are used to determine what information a person pays attention to when solving a problem.

What is think-aloud protocols?

In the Think-Aloud protocol, participants think aloud while performing a series of designated tasks. Participants are asked to say whatever comes to mind as they complete the task. This includes what they see, think, do and feel. This allows the observer to gain insight into the participants' cognitive processes (not just the final product) and allows them to make their thought processes as explicit as possible while performing the task. In a formal research protocol, all verbalizations are transcribed and then analyzed. In the context of usability testing, observers are asked to take notes on what participants say and do without trying to interpret what they say or do. In particular, you are asked to pay attention to where you encounter difficulties. Test sessions can be conducted on participants' own devices or in a more controlled environment. Sessions are often recorded with audio and video so developers can go back and see what participants did and how they responded.

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the ________, also known as the address operator, returns the memory address of a variable.

Answers

Answer: &

Explanation: In some programming languages like C, the ampersand (&) is known as the address operator.

An ampersand is used to denote the unary operator known as the address-of operator (&).

What is the address operator?

To find the memory address of any variable in your script, use the address operator, a unary operator. There should be no space between the operator and the variable name. The address operator can be used to send a variable's address as a parameter in a function call or to assign the address of a variable to a pointer variable. The address may be sent to C applications, who can then use it just like any other normal C pointer.

The C++ language has a technique called an address-of operator that yields a variable's memory address. These addresses that the address-of operator returns are referred to as pointers since they "point" to the memory location of the variable. Because it provides a reference to a variable by referencing its memory location, the & is known as the reference operator. The * operator, which dereferences a reference, offers us the value pointed to by a pointer. This allows us to access the value rather than the address of a memory location.

Therefore, The unary operator known as the address-of operator is shown by an ampersand (&).

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a program runs 200 cycles on cache x. cache x yields a cycle time of 3 ns. what is the total time in ns?

Answers

The total time a program runs 200 cycles on cache x which yields a cycle time of 3 ns is 600 ns.

What is cache?

A cache is an area of storage used by servers, applications, and browsers to temporarily store data that speeds up page loads. Almost every machine, whether it be software or hardware, will have and use a type of cache depending on where you look for them.

Data that has been previously collected and transferred but has since been cached and kept in a particular place. A website's cache would enable you to load specific resources, such as fonts and icons, without having to download them from the server each time you access the page.

To reduce the time it takes for pages to load, servers can save dynamic data as plain HTML in their cache.

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which of the following components are the siem's way of letting the it team know that a pre-established parameter is not within the acceptable range?
a. Trends are patterns of activity discovered and reported to the SIEM.
b. Dashboard consists of customizable information screens that show real-time security and network information
c. Alerts are the SIEM's way of letting the IT team know that a pre-established parameter is not within the acceptable range.
d. Sensors are set up at critical endpoints, services, and other vulnerable locations

Answers

According to the question, 0ption (c) Alerts are the SIEM’s way of letting the IT team know that a pre- established parameter is not within the acceptable range.

Why is SIEM so important?

Real-time event monitoring, analysis, and logging are provided for compliance and criteria via security information and event management (SIEM), which combines security information management (SIM) with security event management (SEM).

Enterprises could use SIEM, or security information and event production, to discover potential security threats and vulnerabilities before they have a chance to negatively impact business operations. It surfaces customer data anomalies and uses artificial intelligence to automate many of the manual processes involved in threat identification and incident response, making it a cornerstone in modern security operation center (SOCs) for security and compliance management use cases.

What is the future of SIEM?

In the future of SIEM, AI will play a bigger role as cognitive skills enhance the system's decision-making capabilities. As the number of endpoints rises, it will also enable systems to expand and adapt. AI holds the promise of a solution that supports additional data types and a comprehensive understanding of the threat landscape as it grows as IoT, cloud, mobile, and other technologies increase the amount of data that a SIEM tool must consume.

The alert or warning aims to catch the attention of the IT professional or professionals who are watching the network. Monitoring at all times is a smart practice in this regard.

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Which of the following questions do data analysts ask to make sure they will engage their audience? Select all that apply.
A. What roles do the people in this audience play?
B. What does the audience hope to do with the data insights?
C. What is the audience’s stake in the project?
D. What information will convince the audience that my opinion is correct?

Answers

Answer:It’s A,B, and C.

Explanation:To engage their audience, data analysts ask about what roles the people in the audience play, their stake in the project, and what they hope to do with the data insights.

routers make up the backbone of the internet. (1 point)truefalse

Answers

The internet backbone is comprised of the fastest routers capable of delivering 100Gbps trunk speeds is true.

What is router ?A router can connect one or more packet-switched networks or subnetworks. It manages traffic between different networks and allows multiple devices to share an Internet connection by sending data packets to their intended IP addresses. A router has two or more data connections from different IP networks. When a data packet arrives on one of the lines, the router checks the network address information from the packet header to determine the ultimate destination. The packet is then forwarded to the next network along the route using information from the routing table or routing policy.Home and small office routers are the most common type of IP routers because they simply forward IP packets between personal computers and the Internet.More complex routers, such as corporate routers, connect large business or ISP networks to the powerful core routers that send data at high speeds over the Internet backbone's optical fiber lines.

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1) Are packet-capturing tools like Wireshark less dangerous on switched LANs? Explain (2 points)

Answers

Wireshark proves to be an effective open source tool in the study of network packets and their behavior. In this regard, Wireshark can be used in identifying and categorizing various types of attack signatures. It lets administrator to see what's happening on network at a microscopic level.

What is wireshark?

Wireshark is a network protocol analyzer, or an application that captures packets from a network connection, such as the one connecting your computer to your home office or the internet. A packet is a distinct unit of data in a standard Ethernet network. Wireshark is the world's most popular packet sniffer. If someone else knows the password to the Wi-Fi network you're using, Wireshark can easily view what you're doing at the time. It enables an attacker to compile a list of all apps running on the device under attack and hone in on programs that may be susceptible.

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What is the primary purpose of PO sync?

To align with the scrum of scrums participants on the status of the Program Increment
To conduct backlog refinement
To assess progress of the Program Increment and adjust scope and priority as needed
To build objectives for the Program Increment

Answers

The primary purpose of PO sync is to assess progress of the Program Increment and adjust scope and priority as needed.

What is PO?

PO stands for Product Owner. Product Owner (PO) is a member of an Agile team and is responsible for maximizing the value the team delivers and ensuring that the team's backlog is aligned with the needs of customers and stakeholders. As a member of the Extended Product Management function, PO is the team's primary customer advocate and primary liaison to business and technical strategy. This allows teams to continuously evolve their solutions while balancing the needs of multiple stakeholders.

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*the choices in the question above should be numbered in order to have a neat list

to send data to analytics from a web-connected device like a point-of-sale system, what feature must be used?

Answers

Based on the information provided within the question it can be said that the feature that is being described is called the Measurement Protocol.

What is mean by Measurement Protocol ?Based on the information provided within the question it can be said that the feature that is being described is called the Measurement Protocol. This is a feature that allows any device that is connected to the internet to send data to  Analytics, and can be used on many devices that cannot access the website or mobile application such as a point-of-sale system.The measurement protocol is a set of rules that must be followed by your application in order to deliver raw hit data directly to the  Analytics server.The measurement protocol is useful for enabling cross-device tracking.There are two User metrics in Universal Analytics: Total Users and New Users.

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suppose a malloc implementation returns 8-byte aligned addresses and uses an explicit free list where the next and previous pointers are each 32-bits. blocks have a 32-bit header and 32-bit footer, where the low-order bit of the header and footer are used to indicate whether the block is allocated (1) or free (0). furthermore, the block size (which includes the header, payload, footer, and any necessary padding) is rounded up to the nearest multiple of 8, and this size (in bytes) is stored in the header and footer. assume any padding must be between the payload and the footer. if we call malloc(1), what block size will be allocated, in bytes?

Answers

4 bytes because even if you call malloc and free a little more frequently, that might still occur. malloc frequently uses the extra space for managing (a linked list of all memory blocks and their sizes) when it takes a few bytes more than what is requested.

There is a good chance that you will tamper with the internal management structures and cause the subsequent malloc of free will to crash if you write some bytes either before or after your allocated block.

4004 because malloc internally always allocates at least four bytes. Your program would be 4000 if you added four bytes, making it 4004. may crash only when you access byte n+1. Additionally, the operating system typically only protects pages of memory.

Your process may be able to read-write the remainder of the page and will only crash when accessing the next memory page if your malloc-ed byte is in the middle of a page with a size of 512 bytes. But keep in mind: Even if this works, the behavior is not clear.

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Full Question = Suppose a malloc implementation returns 8-byte aligned addresses and uses an explicit free list where the next and previous pointers are each 32-bits. Blocks have a 32-bit header and 32-bit footer, where the low-order bit of the header and footer are used to indicate whether the block is allocated (1) or free (0). Furthermore, the block size (which includes the header, payload, footer, and any necessary padding) is rounded up to the nearest multiple of 8, and this size (in bytes) is stored in the header and footer. Assume any padding must be between the payload and the footer.

a) If we call malloc(1), what block size will be allocated, in bytes?

b) With the same conditions, and assuming we've already called malloc(1), if the heap used by malloc starts at address 0x4000 (16384 in decimal), what address would be returned if we then called malloc(32)?

a way to send secure messages over the internet is which of the following?

Answers

A way to send secure messages over the internet is Virtual Private Network (VPN)

What is Virtual Private Network?

A virtual private network (VPN) extends a private network to a public network, allowing users to send and receive data over a shared or public network as if their computing device were directly connected to the private network. Benefits of a VPN include improved functionality, security, and management of your private network. Provides access to resources not accessible on public networks and is typically used for remote workers. Encryption is common, although not an integral part of a VPN connection.

A VPN is created by establishing a virtual point-to-point connection over an existing network using a leased line or tunneling protocol. Available over the public Internet, VPNs can offer some of the benefits of wide area networks (WANs). From the user's perspective, they can remotely access resources available within the private network.

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*the questions above are not complete questions, it is better if the questions above are equipped with options that can make it easier for students to choose answers. The following are examples of options that students can choose from:

a. Browsers

b. Virtual Private Networks

c. Firewalls

d. Anti virus

if a user's byod device (such as a tablet or phone) is infected with malware, that malware can be spread if that user connects to your organization's network. one way to prevent this event is to use a network access control (nac) system. how does an nac protect your network from being infected by a byod device?

Answers

The NAC remediates devices before allowing them to connect to your network, and protect your network from being infected by a Boyd device.

How does the Boyd system work?

Monitoring your employees' devices is the most effective way to reduce the cyber security threats associated with the "Bring your own Device" (BOYD) strategy. You must speak with your staff members and get their approval before giving them any device control at all. refers to staff members who use their personal devices—laptops, smartphones, or tablets—at work to connect to the company network.

Employee-owned equipment is used to access a significant amount of company data. Company-owned, business-only (COBO) and company-owned, personally-enabled (COPE) are alternatives to BYOD (COPE). These two choices for device ownership typically imply that the business buys and owns the devices, and employees have access to pertinent information and data on company network.

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name any two web browsers?​

Answers

Explanation:

Chrome

Opera

That's all i can get for u

Answer:

Microsoft Edge and Internet Explorer

Explanation:

Which of the following function types of function Cannot have default parameters?

Answers

Constructor functions cannot have default parameters.

What function types from the list below cannot have default parameters?A parameterized function Object() { [native code] } is a function type that cannot contain default parameters.A function Object() { [native code] } that takes parameters and uses them to initialise the class's data members is referred to as a parameterized function Object() { [native code] }.Because they offer a means to generate objects of a class with different values, parameterized constructors are helpful.If the class is a container class and it needs to be initialised with various settings for every instance, this is helpful. As an illustration, a container class' function Object() { [native code] } might accept a vector of strings as a parameter.In conclusion, parameterized constructors are unable to accept default parameters since they must be utilised to initialise the class' data members.

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What is key for business process support that spans functional areas and legacy systems? Select one: O a. Eprocurement b. Software customization O c. Data integration d. Elogistics

Answers

The key for business process support that spans functional areas and legacy systems is data integration.

What is data integration?

Data integration is the process of combining data from various sources into a single integrated view. Integration begins with the ingestion process and includes steps such as cleansing, ETL mapping, and transformation. Ultimately, data integration enables analytical tools to create effective and actionable business intelligence.

There is no one-size-fits-all approach to data integration. However, data integration solutions typically have some common elements, such as a network of data sources, master servers, and clients accessing data from the master servers.

In a typical data integration process, a client sends a data request to a master server. The master server then retrieves the required data from internal and external sources. Data is extracted from sources and consolidated into a single, consistent data set. This is sent back to the client for use.

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*the choices in the question above should be numbered in order to have a neat list

Which measure of GDP (Nominal or Real) is a more accurate reflection of output and why? HTML Editora BIVA-A-I E337 3xx, EE STT 12pt D Paragraph

Answers

The measure of GDP (Nominal or Real) is a more accurate reflection of output  is Real GDP.

Why do i say Real GDP?

Real GDP is a more accurate reflection of output because it takes into account changes in the price level. Nominal GDP is one that do measures the value of economic output using current prices, but these prices may be affected by inflation or deflation, which can distort the measure of output.

Therefore, one can say that Real GDP, on the other hand, is adjusted for changes in the price level by using a base year price index, such as the consumer price index (CPI). This tends to allows for a more accurate comparison of output over time, as it eliminates the impact of changes in the price level.

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Hey checking account contain 6274.54 how much is left in the account after withdrawing $385.79

Answers

Answer:

After withdrawing $385.79 from a checking account that contains $6274.54, there would be $5888.75 left in the account.

Explanation:

$6274.54 - $385.79 = $5888.75

write code that adds a method print uppercase to all string objects, past present or future within the current program. how much data does this add to each individual string object? why?

Answers

All of the characters in the string were changed to uppercase letters via the String class's to UpperCase() function in Java.

What do you mean by string objects ?

A string is an object in Java that represents various character values. The Java string object is made up of individual character values for each letter in the string. The char class in Java is used to represent characters. An array of char values entered by users will have the same meaning as a string. A string is sometimes implemented as an array data structure of bytes (or words) that contains a succession of elements, typically characters, using some character encoding. A string is generally thought of as a type of data. More generic arrays or other sequence (or list) data types and structures may also be referred to by the term "string."

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for linux files, the default permission is 666, and the default umask is 022. when a new file is created, it will be assigned 644 (rw-r--r--) permissions. if the umask is set to 027, what permissions will be assigned for newly created files?

Answers

If the umask is set to 027, 640 (rw-r——-) permissions will be given to newly created files in Linux files.

What are Linux files?

A partition or a disk drive's structured collection of files is referred to as a Linux file system.

A memory segment known as a partition houses a particular set of data.

Different memory divisions may exist in our machine.

Typically, a file system is present on every partition. In contrast, the Linux/Unix operating system organizes files into a tree-like structure beginning with the root directory, as illustrated in the image below.

The root directory serves as the starting point for the whole Linux/Unix file system hierarchy.

So, in the given situation, for newly created files, 640 (rw-r——-) permissions will be assigned if the umask is set to 027.

Therefore, if the umask is set to 027, 640 (rw-r——-) permissions will be given to newly created files in Linux files.

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Which one of the following principles is NOT a component of the Biba integrity model?

Subjects cannot read objects that have a lower level of integrity than the subject.

Subjects cannot change objects that have a lower integrity level.

Subjects at a given integrity level can call up only subjects at the same integrity
level or lower.

A subject may not ask for service from subjects that have a higher integrity level.

Answers

The principle that is not the component of Biba Integrity Model is subjects cannot change objects that have a lower integrity level.

What is Biba Integrity Model?

The Biba Model, or Biba Integrity Model, developed by Kenneth J. Biba in 1975, is a formal computer security policy state transition system that describes a set of access control rules designed to ensure data integrity. Data and subjects are grouped into ordered integrity levels. The model is designed so that the subject cannot corrupt data at a higher level than the subject, nor can it be corrupted by data at a lower level than the subject.

In general, this model is designed to address integrity as a core principle, in direct contrast to the Bell-LaPadula Model, which focuses on confidentiality.

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what type of ipv6 address is fe80::8cf1:2c42:ffde:da1c?

Answers

The type of ipv6 address, fe80::8cf1:2c42:ffde:da1c is link local address. A link-local address in computer networking is the IP address that should be used for communication inside a logical division of the network.

A link-local address in computer networking is a unicast network address that is only usable for communications with other hosts linked to the same subnetwork. The method of stateless address autoconfiguration, also known as link-local address autoconfiguration or auto-IP, is most frequently used to automatically assign link-local addresses.

Beyond their network segment, link-local addresses are not guaranteed to be singular. Routers do not, therefore, forward packets with link-local source or destination addresses.

Administrators can manually allocate link-local addresses or operating systems can do so automatically. They are typically assigned in Internet Protocol (IP) networks utilizing stateless address autoconfiguration, which frequently employs a stochastic procedure to determine the value of link-local addresses.

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1.bob has received an order (digitally signed) for material from alice, and alice claims she never sent one. how does bob prove the order came from alice? explain how the parties would enact this cryptographically and the basis for each step.

Answers

Alice cannot deny sending the message if she signs it with her private key, and transmits it to Bob, and Bob then uses Alice's public key to verify the signature.

What is the public key?

The area of cryptographic systems that use pairs of related keys is known as public-key cryptography, also known as asymmetric cryptography.

A public key and its accompanying private key make up each key pair. Cryptographic algorithms that are based on one-way functions are used to create key pairs.

The private key must be kept hidden in order for public-key cryptography to be secure; nevertheless, security is not compromised if the public key is freely distributed.

Anyone with access to a public key can encrypt a message in a public-key encryption system, creating a ciphertext.

However, only those who have access to the associated private key can decrypt the ciphertext to reveal the original message.

So, in the given situation, if Alice uses her private key to sign the message and sends it to Bob, Bob can use Alice's public key to confirm the signature, so Alice cannot claim not to have sent the message.

Therefore, Alice cannot deny sending the message if she signs it with her private key, and transmits it to Bob, and Bob then uses Alice's public key to verify the signature.

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What two methods can be used to access items in the Quick Launch menu?

Select one or more:

a. Right click the Start button, select an item from the Quick Launch menu

b. Press CTRL+X on the keyboard to access the Quick Launch menu from anywhere

c. Right click the taskbar, select Quick Launch, select an item.

d. Press Win+X on the keyboard to access the Quick Launch menu from anywhere

5. What software in Windows 8 serves as built-in antivirus software?

Answers

The Quick Launch menu can be access use a option, and d option. The built-in antivirus software in Windows 8 is Windows Defender.

What is Quick Launch?

Quick Launch is a feature from Windows OS for enables user to launch programs or application without user to manually locate them in start menu.

The Quick Launch feature can be access with Win+X keyboard shortkey from anywhere include from application that currently in use or it can be accessed by right click the Start button. After that the item can be selected.

Windows Defender is a new built-in antivirus software since Windows 8 from Windows OS which replaces Microsoft SpyWare in previous OS from Windows.

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calculate the overall speedup of a system that spends 40% of its time waiting on i/o disk service with a disk upgrade that provides for 150% greater throughput. express the speed up as a percentage (rounded up to no digits after the decimal point).

Answers

The overall speedup of the system due to the disk upgrade is 60%.

How to calculate the disk upgrade percentage?

The speedup of the system due to the disk upgrade can be calculated as follows:

First, let's calculate the amount of time the system spends waiting on I/O disk service before the upgrade:

Time waiting on I/O disk service before upgrade = 40% * Total time = 40% * 1 = 0.4

Next, let's calculate the amount of time the system spends waiting on I/O disk service after the upgrade, assuming the disk provides 150% greater throughput:

Time waiting on I/O disk service after upgrade = 40% * 1 / (1 + 150%) = 40% * 1 / 2.5 = 16%

The overall speedup of the system due to the disk upgrade can now be calculated as follows:

Overall speedup = 1 - Time waiting on I/O disk service after upgrade / Time waiting on I/O disk service before upgrade = 1 - 16% / 40% = 1 - 0.4 = 60%

Therefore, the overall speedup of the system due to the disk upgrade is 60%.

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what term is used to describe the business model where service providers to make computing resources and infrastructure management available to customers as needed and then charges them for its specific usage rather than a flat rate?

Answers

The term 'utility computing' is used to describe the business model where service providers make computing resources and infrastructure management available to customers as required and then charge them for their specific usage rather than a flat rate.

Utility computing is described as a service provisioning model that offers computing resources to customers as and when they need them on an on-demand basis. The charges are exactly as per the usage or consumption of the services and resources provided, rather than a flat rate or a fixed charge.

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