The symmetric cipher by the NIST (National Institute of Standards and Technology) in late 2000 as a replacement for DES (Data Encryption Standard) is called AES (Advanced Encryption Standard).
AES uses a block cipher that can have a block size of 128 bits, 192 bits, or 256 bits, and it supports key sizes of 128 bits, 192 bits, or 256 bits as well. It is widely used in various applications that require secure encryption, such as online banking, e-commerce, and data storage.
The symmetric cipher that was approved by the NIST (National Institute of Standards and Technology) in late 2000 as a replacement for DES (Data Encryption Standard) is AES (Advanced Encryption Standard). AES is a widely used encryption algorithm that can be used for securing sensitive data. It uses a block cipher to encrypt and decrypt data and has key sizes of 128, 192, and 256 bits. AES is considered to be more secure than DES and has become the standard encryption algorithm used by the US government and many other organizations worldwide.
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the st and sc fiber connectors are the most commonly found connectors due to their smaller sizes.
true or false
False. ST and SC fiber connectors are both commonly used in fiber optic networks, but they are not the most commonly found connectors due to their smaller sizes.
In fact, the most commonly used fiber optic connector is the LC (Lucent Connector) connector.
LC connectors are smaller than ST and SC connectors, making them more suitable for high-density installations where space is at a premium. They are also easier to install and terminate than ST and SC connectors, which require polishing and epoxy to secure the fibers in place.
That being said, both ST and SC connectors are still widely used in many applications, particularly in older installations or in industrial environments where their robust design is an advantage. Overall, the choice of fiber optic connector depends on the specific application, the type of fiber optic cable being used, and other factors such as cost and ease of installation.
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some signaling errors can cause entire ranges of bits in a packet to be overwritten by all 0s or all 1s. suppose all the bits in the packet, including the internet checksum, are overwritten. could a packet with all 0s or all 1s be a legal ipv4 packet? will the internet checksum catch that error? why or why not?
No, a packet with all 0s or all 1s cannot be a legal IPv4 packet.
This is because the Internet Protocol (IP) uses the checksum to validate the packet. The checksum is a mathematical calculation that is performed on the packet's header to verify that the packet is valid. If the packet has all 0s or all 1s, the checksum will not match the data in the packet and the packet will be rejected.
The Internet checksum is designed to detect errors in the packet's header, such as errors in the IP address or the size of the packet. It will not detect errors in the payload, such as those caused by signaling errors. As such, the checksum will not detect a packet with all 0s or all 1s, as it is not an error in the packet's header.
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a drawback associated with olap reports is their inability to let users drill down into the data.
T/F
False. a drawback associated with olap reports is their inability to let users drill down into the data.
One of the main advantages of OLAP reports is their ability to provide users with interactive drill-down capabilities that allow them to navigate through the data at different levels of granularity, from summary to detail. This enables users to perform more in-depth analysis and gain insights into trends and patterns in the data.
One of the key benefits of OLAP (Online Analytical Processing) reports is their ability to allow users to drill down into the data to gain insights and make informed decisions. OLAP reports enable users to view data from multiple perspectives, such as by time, geography, product, or customer, and then drill down to view the underlying details that make up the summary data. This ability to explore the data in multiple ways is one of the key advantages of OLAP over traditional relational database reporting.
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Which of the following are tabs found in the Windows Task Manager dialog box? (Choose all that apply).a. Performanceb. Startupc. Applicationsd. Processes
The Windows Task Manager dialog box is a powerful tool that allows users to monitor and manage various system processes and resources. There are four tabs that can be found in the Task Manager dialog box: Performance, Startup, Applications, and Processes.
The Performance tab displays real-time graphs and statistics of system performance metrics, such as CPU usage, memory usage, disk activity, and network activity. Users can use this tab to monitor the overall health and performance of their system and identify any potential bottlenecks or issues.
The Startup tab shows a list of all programs and services that are set to automatically start when the computer boots up. Users can use this tab to disable unnecessary startup programs and services to improve system performance and reduce startup time. The Applications tab displays a list of all open windows and applications currently running on the system. Users can use this tab to switch between different applications and close any unresponsive or frozen programs.
Finally, the Processes tab provides a detailed view of all system processes currently running on the system, including their CPU and memory usage, process ID, and other important information. Users can use this tab to identify any resource-hungry or malicious processes and terminate them if necessary. In conclusion, all four tabs - Performance, Startup, Applications, and Processes - can be found in the Windows Task Manager dialog box.
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T/F: one way to distribute a document is to post it on cloud storage such as skydrive.
True. Cloud storage services like SkyDrive (now known as OneDrive) allow users to store and share documents online.
By uploading a document to a cloud storage platform, it can be accessed by anyone with whom the user has shared the file or link. This method of distribution is especially useful for collaborating with remote team members or sharing large files that may be difficult to send via email. However, it's important to ensure that any confidential or sensitive information is properly protected before sharing via a cloud storage platform.
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in cascading style sheets (css) every printed page is defined as a _____. A)boxed element B)boxed schema C)page schema D)page box
In Cascading Style Sheets (CSS), every printed page is defined as a page box. A page box is a rectangular box that represents the area of a printed page. It is a virtual container that defines the size and layout of the content that will be printed on a page.
CSS provides a number of properties that can be used to control the appearance and layout of page boxes. These properties include page size, margins, borders, and backgrounds. By setting these properties, designers can create custom page layouts that are optimized for printing.
One important feature of page boxes is their ability to define different layouts for different media types. For example, a designer can create one layout for screen display and another layout for printing. This allows content to be optimized for different media types, resulting in a better user experience.
Overall, page boxes are an essential concept in CSS and play a key role in controlling the appearance and layout of printed pages. By understanding how page boxes work, designers can create effective and visually appealing print layouts that enhance the usability and readability of their content.
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If button1 is a JButton object, which of the following statements will make its background blue? a. button1.setBackground(Color.blue); b. button1.setBackground(Color.BLUE); c. button1.setBackground(Color.BLUE); d. button1.setBackground(blue);
The correct statement to make the background of button1 blue is: a. button1.setBackground(Color.blue);
In Java, colors are represented as objects of the Color class, and the setBackground() method of the JButton class is used to set the background color of a button.
The color blue is one of the predefined colors in the Color class, and it is represented by the constant Color.blue. The correct way to set the background color of button1 to blue is to call the setBackground() method and pass in Color.blue as the argument, as shown in option a.
Option b is also correct since Color.BLUE is another constant in the Color class that represents the color blue, but with uppercase letters. Option c is incorrect because it uses the constant Color.BLUE with lowercase letters, which is not a valid syntax in Java. Option d is incorrect because blue is not a valid color in Java, and it would result in a compilation error.
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Why can you not use an array of VHDs to create a striped volume in a Windows system? a) VHDs are not supported in Windows b) Striped volumes require physical disks, not virtual disks c) VHDs do not support the required disk format d) Striped volumes cannot be created with more than one disk
The correct answer is b) Striped volumes require physical disks, not virtual disks.
Striped volumes, also known as RAID-0 volumes, are created by combining two or more physical disks into a single logical volume. The data is then spread across the disks in the volume, which can improve performance.
However, virtual hard disks (VHDs) are not physical disks but are virtual disks that are stored as files on a physical disk. As a result, they cannot be used to create striped volumes in a Windows system.
To create a striped volume, you need to use physical disks that are connected to the system.
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The rapid exam of a patient that occurs following the primary assessment should take no longer than:
A. 120 to 180 seconds.
B. 90 to 120 seconds.
C. 60 to 90 seconds.
D. 30 seconds.
The rapid exam of a patient that occurs following the primary assessment should take no longer than 60 to 90 seconds. This exam is essential to identify any life-threatening conditions that may have been missed during the primary assessment.
The rapid exam involves a quick but thorough evaluation of the patient's airway, breathing, circulation, disability, and exposure (ABCDE). The examiner should look for any signs of respiratory distress, cardiac arrest, severe bleeding, altered mental status, and exposure to environmental factors that could cause harm.
The rapid exam is a critical component of patient care, and it should not take longer than the recommended time frame. The longer the exam takes, the greater the risk of missing a critical condition. The examiner should be well-trained and familiar with the ABCDE approach to ensure a quick and accurate assessment. In some cases, additional assessments or tests may be necessary, but these should be done promptly and efficiently.
In conclusion, the rapid exam following the primary assessment should take no longer than 60 to 90 seconds. This exam is essential for identifying any life-threatening conditions that may have been missed earlier. The examiner should be well-trained and familiar with the ABCDE approach to ensure a quick and accurate assessment.
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Name the two methods to assign a static IP address to a computer using Server Core.
a. Server Manager and the netdom.exe command
b. The netdom.exe command and the IPv4 Properties sheet
c. The IPv4 Properties sheet and the netsh.exe command
d. T he netsh.exe command and Windows Management Instrumentation (WMI) access provided by Windows PowerShell
The correct answer is option B - The netdom.exe command and the IPv4 Properties sheet.
The netdom.exe command is a powerful command-line tool that can be used to manage Active Directory domains and computers. It can also be used to assign a static IP address to a computer running Server Core. The IPv4 Properties sheet is a graphical user interface tool that can be used to configure the IP address settings of a computer. It can also be used to assign a static IP address to a computer running Server Core.
To assign a static IP address using the netdom.exe command, you need to open a command prompt and type the following command:
netdom.exe computername /add:IPAddress subnetmask gatewaydns1 gatewaydns2 /userd:domain\administrator /passwordd:*
Replace "computername" with the name of the computer you want to assign the static IP address to, and replace "IPAddress", "subnetmask", "gatewaydns1", and "gatewaydns2" with the appropriate values for your network.
To assign a static IP address using the IPv4 Properties sheet, you need to open the Network and Sharing Center, click on the "Change adapter settings" link, right-click on the network adapter you want to configure, and select "Properties". In the Properties window, select "Internet Protocol Version 4 (TCP/IPv4)" and click on the "Properties" button. In the IPv4 Properties window, select the "Use the following IP address" option and enter the appropriate values for your network. Click on "OK" to save the changes.
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Which of the following is a major advantage of input, process, output development order? a) Requires minimal planning b) Easy to debug c) Easily adaptable to changing requirements d) Provides rapid results
Answer is: "One major advantage of the IPO model is its adaptability to changing requirements, allowing modification of input, process, or output components without affecting others. The model is easy to understand and provides rapid results, making it useful for small projects or prototyping
The input, process, and output (IPO) development sequence has the significant benefit of being easily adaptable to changing requirements. This is so that the IPO model may concentrate on the functional elements of a system rather than the specifics of how it was implemented technically. As a result, adjustments to a system's needs or specifications may be made by altering the input, process, or output components without having an impact on the others. This adaptability is especially useful in environments that are dynamic and where requirements can change frequently.
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A trust model with one CA that acts as a facilitator to interconnect all other CAs.bridge trust modelCA ( Certificate Authority)CR (Certificate Repository)
A Bridge Trust Model involves a central Certificate Authority (CA) that acts as a facilitator to interconnect all other CAs within the network. In this model, the facilitator CA helps establish trust between different CAs by managing and distributing their respective certificates. This setup ensures that the Certificate Repositories (CRs) have an organized system for storing and retrieving certificates, making it easier to establish trust between different parties within the network.
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The combination of a public key and a private key are known by what term below? A) key set B) key team C) key pair D) key tie.
The combination of a public key and a private key is known as a "key pair" (option C). In cryptography, a key pair consists of two keys: one public and one private.
The public key can be shared with anyone, while the private key must be kept secret. These keys are used in various cryptographic operations, such as encryption, decryption, digital signatures, and secure communication. In conclusion, the term that best describes the combination of a public and a private key is a key pair, which enables secure data exchange and authentication between parties.
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a derived class always "____" case or instance of the more general base class. a.has a c.redefines b.make a d.is
A derived class always "is" a case or instance of the more general base class.
When creating classes in object-oriented programming, it is common to have a hierarchy of classes with a base or parent class and one or more derived or child classes. A derived class is a class that inherits properties and methods from its parent or base class. This means that it can use the same variables and functions as the base class, and can also add its own unique properties and methods.
To answer the question, a derived class always "is" a case or instance of the more general base class. This means that it inherits the properties and methods of the base class and can also have its own unique features.
In conclusion, when creating a derived class, it is important to keep in mind that it is a specialized version of the base class and that it can have additional features and functionality. By using inheritance, you can create efficient and reusable code that makes it easier to develop and maintain your applications.
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what kind of wifi connection should you have for telework? (select all that apply)
For effective telework, you should have a reliable and secure Wi-Fi connection. Consider using a broadband internet connection with sufficient bandwidth, a strong Wi-Fi signal, and a secure network with encryption (such as WPA2 or WPA3) to protect your data.
For telework, it is recommended to have a reliable and secure wifi connection. It should have a strong signal strength, fast download and upload speeds, and low latency. It is also recommended to have a wifi network with WPA2 encryption and a strong password to ensure the security of your work. Additionally, having a backup wifi connection or a mobile hotspot can be helpful in case of any disruptions to your primary wifi connection.
A secure network with encryption, such as WPA2 or WPA3, is a type of network that is designed to protect the data that is transmitted between devices. Encryption is the process of converting information into a code that can only be deciphered by authorized parties who have the key to unlock the code.
WPA2 (Wi-Fi Protected Access II) and WPA3 (Wi-Fi Protected Access III) are two types of encryption protocols that are commonly used to secure wireless networks. These protocols use strong encryption algorithms to protect the data that is transmitted over the network, making it much more difficult for unauthorized users to intercept and read the data.
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____ area networks can cover large geographic distances, including the entire Earth.
a. Personal c. Wide
b. Local d. Universal
The correct answer is c. Wide area networks. Wide area networks (WANs) are designed to cover large geographic distances, often spanning multiple cities, states, or even countries.
WANs are used to connect computers and other devices across vast distances, allowing for communication and data exchange between locations that may be hundreds or even thousands of miles apart. While local area networks (LANs) are designed for smaller geographic areas, typically confined to a single building or campus, WANs are essential for businesses and organizations with multiple locations or remote workers. They allow for efficient communication and collaboration across distances, and can also facilitate cloud computing and other remote services.
In conclusion, WANs are an essential component of modern networking infrastructure, allowing for communication and data exchange across vast geographic distances.
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in c++, the scope resolution operator is ____.
The scope resolution operator in C++ is "::". It is used to identify and access a variable or function in a particular scope.
In C++, the scope resolution operator "::" is used to specify the scope of a variable or function. It allows the programmer to access a variable or function from a particular namespace, class, or block. For example, if there is a global variable and a local variable with the same name, the scope resolution operator can be used to access the global variable. It can also be used to access a member function of a class outside of the class definition. The scope resolution operator can be useful in avoiding naming conflicts and ensuring that the correct variable or function is being used.
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a ____ http connection reuses the same http connection to send and receive multiple requests.
The term for a HTTP connection that reuses the same connection to send and receive multiple requests is a "persistent" or "keep-alive" connection.
HTTP (Hypertext Transfer Protocol) is the protocol that enables communication between clients (such as web browsers) and servers (such as web servers) over the internet. When a client requests a webpage, it sends an HTTP request to the server, and the server responds with an HTTP response containing the requested content. HTTP uses a request-response model, where each request from a client results in a corresponding response from the server. One of the key features of HTTP is its ability to use persistent connections (also known as keep-alive connections), which allow multiple requests and responses to be sent and received over the same connection. This helps to reduce the overhead associated with establishing new connections for each request/response pair, and can improve overall performance and user experience.
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A port number, which identifies an application on a host, exists at what level of the OSI model?
a. Data link
b. Application
c. Network
d. Transpor
The port number, which is used to identify an application on a host, exists at the Application layer of the OSI model.
This layer is responsible for managing the communication between the end-user applications and the network. The port number is a unique identifier that is used to ensure that the data is sent to the correct application on the host. Each application is assigned a different port number, which allows the receiving host to know which application the data is intended for. The Application layer is the highest layer of the OSI model and is responsible for providing services such as email, file transfer, and web browsing.
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____ buttons can be placed into a group so that selecting one deselects all of the others. a. Checkbox, c. Command. b. Image, d. Radio.
The buttons that can be placed into a group so that selecting one deselects all of the others are called Radio buttons. Radio buttons are a type of graphical user interface element that allow users to select one option from a set of mutually exclusive choices.
When grouped together, only one option can be selected at a time, and selecting a different option will automatically deselect the previously selected one. This behavior is useful in situations where users need to make a single, definitive choice from a set of options, such as choosing a payment method or selecting a preferred language. On the other hand, Checkbox buttons allow users to select multiple options at once. When grouped together, users can select as many options as they want, and selecting one option does not deselect any of the others. Checkbox buttons are commonly used in situations where users need to make multiple selections, such as choosing which email notifications to receive or selecting multiple items from a list. Command buttons, also known as push buttons, perform an action when clicked. They are typically used to initiate a process, such as saving a document or printing a page. Image buttons are graphical elements that are often used to represent commands or actions, and can be clicked to initiate the associated action.
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which of the following is a popular, user friendly cms often used as a blogging platform? a. Drupal b. Joomla c. WordPress
c. WordPress is a popular and user-friendly content management system (CMS) that is often used as a blogging platform. It is an open-source software that is free to use and is known for its ease of use, flexibility, and extensive plugin and theme options.
WordPress has a large and active community of developers and users who create and share new features, tools, and designs that make it easier to create and manage content. One of the main reasons why WordPress is so popular is that it can be used to create a variety of websites, from simple blogs to complex e-commerce sites. It comes with a built-in editor that allows users to easily create and edit content, and it also supports the use of plugins and themes that can enhance the site's functionality and appearance.
WordPress also has a user-friendly interface that makes it easy for beginners to create and manage their websites. It has a simple and intuitive dashboard that provides quick access to all the essential features and tools, such as the ability to create and edit posts, pages, and media. In summary, if you are looking for a popular, user-friendly CMS that is often used as a blogging platform, WordPress is the answer. With its ease of use, flexibility, and extensive plugin and theme options, it is a great choice for anyone who wants to create and manage their own website or blog.
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memory buffering is used to buffer frames in queues linked to specific incoming and outgoing ports. True or False
True. Memory buffering is commonly used in computer networking to manage the flow of data packets or frames.
In this process, frames are temporarily stored in queues that are linked to specific incoming and outgoing ports. This allows for efficient delivery of data packets and prevents congestion on the network. Buffering is essential in managing the data flow in a network, especially during peak usage times when traffic may be heavy. By buffering frames, the network can ensure that packets are delivered in a timely and reliable manner. It also helps to prevent packet loss or delay, which can negatively impact network performance. Overall, memory buffering is an important component of network management and helps to ensure the efficient and effective transfer of data across the network.
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which ip utility is used to display response times for every router on the path to the destination?
The "traceroute" utility is used to display response times for every router on the path to the destination.
Traceroute is a network diagnostic tool used to track the path packets take from one device to another over an IP network. It works by sending packets with increasing Time-To-Live (TTL) values, which cause routers along the path to send back ICMP error messages. These messages contain information about the router's IP address and the time it took for the packet to reach it. Traceroute uses this information to build a list of all the routers between the source and destination devices, along with the response times for each router. This information can be helpful in identifying network performance issues and troubleshooting connectivity problems.
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a computer’s full hostname is franklin.example.org. the machine name portion of this hostname is
The machine name portion of the hostname "franklin.example.org" is "franklin".
The hostname is composed of three parts: the machine name, the domain name, and the top-level domain. In this case, "franklin" is the machine name portion, "example" is the domain name portion, and "org" is the top-level domain portion. The machine name portion of a hostname identifies the specific computer or device within a domain. It is typically chosen by the user or administrator and should be unique within the domain. In this case, "franklin" could be the name of a server, desktop computer, or other network device. The domain name portion of a hostname identifies the organization or group that manages the network. In this example, "example" is used as a placeholder for the actual domain name.
The top-level domain portion of a hostname identifies the type of organization or geographic location. In this case, ".org" indicates that the organization is a non-profit entity. Understanding the different parts of a hostname is important for managing network resources and troubleshooting connectivity issues. By identifying the machine name portion of a hostname, administrators can locate specific devices on the network and ensure that they are properly configured for network services.
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every domain name corresponds to a unique ip address that has been entered into the ____.
Domain Name System (DNS) server.
DNS servers are responsible for translating human-readable domain names into IP addresses that computers can understand.
When a user types in a domain name, their computer sends a request to a DNS server to obtain the corresponding IP address. The DNS server then responds with the correct IP address, allowing the user's computer to establish a connection with the server hosting the website or service associated with that domain name.
This process is crucial for the functioning of the internet, as it enables users to access websites and services by simply typing in a memorable domain name rather than having to remember a long string of numbers.
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All of the following might be part of a Web site's middle-tier layer except:
A) a database server.
B) an ad server.
C) legacy corporate applications.
D) a mail server.
The middle-tier layer of a website is responsible for managing and processing data that is exchanged between the front-end and back-end layers. It typically includes a web server, application server, and database server. However, not all components of a website can be considered part of the middle-tier layer. Option A is a valid component of the middle-tier layer.
The database server stores and retrieves data that is requested by the application server. This data is then processed and sent back to the front-end layer for display. Option B, an ad server, is not typically considered part of the middle-tier layer. Ad servers are responsible for serving ads to the website's visitors. While they may be integrated into the website's code, they are not involved in managing or processing data within the website itself.
Option C, legacy corporate applications, could potentially be part of the middle-tier layer. If these applications are integrated with the website and are responsible for processing data, they would be considered part of the middle-tier layer. However, if they are standalone applications that are not integrated with the website, they would not be considered part of the middle-tier layer. Option D, a mail server, is also not typically part of the middle-tier layer. Mail servers are responsible for sending and receiving email messages and are not involved in managing or processing data within the website. In conclusion, the answer to the question is option B, an ad server, which is not typically considered part of a website's middle-tier layer.
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____ the format painter button allows it to remain active until you turn it off.
Double-clicking the Format Painter button allows it to remain active until you turn it off.
In Microsoft Office applications, such as Microsoft Word, Excel, and PowerPoint, the Format Painter button allows you to quickly apply the formatting from one part of your document to another. When you click the Format Painter button, it copies the formatting of the selected text or object, and then you can apply the same formatting to another part of your document by selecting the target text or object.
By default, the Format Painter button works as a one-time operation. Once you apply the formatting to the target text or object, the Format Painter button turns off automatically. However, if you double-click on the Format Painter button, it will remain active until you turn it off manually by clicking the button again or pressing the Escape key. When the Format Painter button is active, you can apply the same formatting to multiple parts of your document without having to click the button each time.
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if operating on the western rivers system, what do numbers fixed below day markers indicate?
If operating on the western rivers system, numbers fixed below day markers indicate the distance in miles from the mouth of the river where it meets the sea.
Day markers are placed along the banks of the river to help mariners navigate and determine their position on the river. The numbers fixed below these markers are known as mileage markers or distance markers. They are used to measure the distance traveled by the vessel from the river mouth to a particular point on the river. These distance markers are an important tool for mariners operating on the western rivers system as they allow them to estimate the time it will take to reach their destination and to plan their voyage accordingly. It is important for mariners to be familiar with these distance markers and to keep track of their progress as they navigate the river. By doing so, they can ensure a safe and efficient voyage on the western rivers system.
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SONET’s extraordinary ____ results from its use of a double-ring topology over fiber-optic cable.A) latency B) low cost C) fault tolerance D) throughput
The correct answer to your question is C) fault tolerance.
SONET, which stands for Synchronous Optical Network, is a high-speed communication network that uses a double-ring topology over fiber-optic cable. This topology provides redundancy and fault tolerance, meaning that if one ring fails, the other ring can still maintain the network's operation without any interruption. This feature is especially important for critical applications that require constant and reliable network connectivity, such as telecommunication and financial services. SONET's fault tolerance is one of its most remarkable advantages, making it a preferred choice for many organizations that need high-speed and highly available network infrastructure.
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______ consists of rom chips or flash memory chips that store permanent instructions. a. Memware b. Chipware c. Firmware d. Dataware
Firmware consists of ROM chips or flash memory chips that store permanent instructions
To answer your question, let's understand the function of storing permanent instructions in a computing system. The permanent instructions mentioned in the question refer to the fundamental code or data that control the basic functions of a device. This code is essential for the device to operate properly and typically doesn't change during its regular use.
Based on the provided options, the correct term for this is c. Firmware. Firmware consists of ROM chips or flash memory chips that store permanent instructions in a device.
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