What is the speedup when 10% of the code is not parallelized and the rest of the code is perfectly parallelized and executed on 9 cores?

The header information for ARP reply in an Ethernet frame includes the sender's MAC address as the destination, the reply sender's MAC address as the source, and a type field of 0x806. If no response is received, the packet is dropped.

In an Ethernet network, when a device needs to communicate with another device, it needs to know the other device's MAC address. ARP (Address Resolution Protocol) is used to map an IP address to a MAC address. When an ARP request is sent, the requesting device includes its own MAC address as the source address and the destination address is a broadcast address for all devices on the network.

When the device with the requested IP address responds to the ARP request, it sends an ARP reply containing its own MAC address. The source and destination MAC addresses in the Ethernet frame carrying the ARP reply are swapped from those in the ARP request. The type field of 0x806 indicates that the frame contains an ARP message.

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SpecificMinimumPrimaryCriticalPlank cardinalities refer to the constraints on the minimum number of entities that can participate in a relationship in a database or data model.

Constraints on the minimum number of entities in a relationship are called SpecificMinimumPrimaryCriticalPlank cardinalities. Here's a breakdown of the terms:

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A file that stays in memory after it executes is typically referred to as a "Terminate and Stay Resident" (TSR) program.

A TSR program is a type of software that remains loaded in memory even after its initial execution has completed, allowing it to continue running in the background and providing some form of ongoing functionality or monitoring.

TSR programs were commonly used in older operating systems, such as MS-DOS, to provide background tasks or utilities that could respond to events or perform tasks while other applications were running. TSR programs are typically implemented as executable files, which are loaded into memory when executed, and they are not typically text files.

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A file that stays in memory after it executes is typically referred to as a "Terminate and Stay Resident" (TSR) program. A TSR program is a type of software that remains loaded.

in memory even after its initial execution has completed, allowing it to continue running in the background and providing some form of ongoing functionality or monitoring. TSR programs were commonly used in older operating systems, such as MS-DOS, to provide background tasks or utilities that could respond to events or perform tasks while other applications were running. TSR programs are typically implemented as executable files, which are loaded into memory when executed, and they are not typically text files.

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The major techniques for understanding expected or unexpected traffic are behavior-based detection, anomaly-based detection, heuristics, and protocol analysis.

Behavior-based detection involves analyzing network traffic to identify patterns of expected behavior, while anomaly-based detection looks for unusual activity that deviates from these expected patterns.

Heuristics involves using rules or guidelines to identify suspicious behavior, while protocol analysis focuses on examining the content of network traffic to detect anomalies.

Each of these techniques is valuable in understanding network traffic and can be used in combination to provide a more comprehensive analysis.

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To avoid falling victim to identity theft, and cyber bullying individuals should create strong passwords and use two-factor authentication whenever possible.

They should also avoid sharing personal information, such as Social Security or credit card numbers, online or over the phone unless absolutely necessary.

Additionally, individuals should regularly monitor their credit reports and bank statements for any suspicious activity, and report any suspected identity theft to the relevant authorities immediately. Using reputable antivirus and antimalware software, being cautious of suspicious emails and links, and avoiding public Wi-Fi for sensitive transactions can also help prevent identity theft.

By taking these steps, individuals can reduce their risk of falling victim to this type of internet crime and help protect their personal information.

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It may be seen which mobile devices were used to browse a website in the Devices report under "Mobile".

In addition to information on their screen resolution and operating system, this report offers insights into the various categories of mobile devices that people are utilising to access a website. By confirming that a website is compatible with the most widely used devices and operating systems, this information may be utilised to optimise the mobile experience of that website. Additionally, it can assist in identifying any problems or difficulties consumers might be having on particular devices so that website owners can take the necessary action. The Devices report can help website owners better understand their mobile users and enhance user experience in general.

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How an Operating System (OS) translates a Virtual Page Number (VPN) to a Physical Page Number (PPN) in the context of memory management. Here are the step-by-step explanations:

1. Address Translation: When a program is executed, it uses virtual addresses to access memory. The OS is responsible for translating these virtual addresses into physical addresses. This process is called address translation.

2. Virtual Page Number (VPN): A virtual address is divided into two parts: the Virtual Page Number (VPN) and the offset. The VPN identifies the page in the virtual memory space, while the offset specifies the location within that page.

3. Page Table: The OS maintains a data structure called the page table to manage the mapping between VPNs and PPNs. Each entry in the page table contains the corresponding Physical Page Number (PPN) for a particular VPN.

4. Translation Lookaside Buffer (TLB): To speed up the address translation process, the OS and hardware use a cache called the Translation Lookaside Buffer (TLB). The TLB stores recent VPN-to-PPN mappings to minimize the time taken for address translation.

5. VPN to PPN translation process:
  a. The OS extracts the VPN and the offset from the virtual address.
  b. It checks the TLB for a VPN-to-PPN mapping. If found, the OS proceeds to step e.
  c. If the mapping is not in the TLB, the OS consults the page table for the PPN corresponding to the VPN.
  d. The OS updates the TLB with the new VPN-to-PPN mapping for faster access in the future.
  e. The OS combines the PPN and the offset to obtain the physical address, which is then used to access memory.

By following these steps, the OS effectively translates a VPN to a PPN in memory management, ensuring efficient execution of programs and optimal utilization of system resources.

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False. The order of the rows and columns is important to the DBMS.

The database management system (DBMS) does not pay attention to the rows' and columns' order. Flexible and dynamic data handling and manipulation are features of the DBMS. The information is kept in tables with rows and columns, each of which corresponds to a record or data point and each of which corresponds to a data attribute. The DBMS can manage massive volumes of data with intricate links and dependencies across tables and employs SQL (Structured Query Language) to query, insert, update, and remove data from the tables. Although the user or program accessing the data may care about the row and column order, the core functioning of the DBMS is unaffected.

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The SQL keyword "SELECT" pulls data from one or more tables and, if applicable, delivers a result set that includes all rows that satisfy the WHERE clause's condition. The SQL keyword "RESTRICT" is not common.

In SQL, the "SELECT" keyword is used to retrieve data from a table or multiple tables in a database. The result set returned by a SELECT statement contains all the rows that meet the specified condition in the WHERE clause, if one is included. The term "RESTRICT" is not a standard SQL keyword but may refer to the use of the WHERE clause to limit the result set to only those rows that meet the condition. In this way, SELECT can be used to yield values for all rows found in a table that satisfy a given condition.

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True: A person designated to be the manager of data warehousing should indeed be a tech expert as well as have experience working with end users. This combination of skills ensures effective management of data infrastructure and the ability to meet the needs of users.

A data warehouse is a type of data management system that is designed to enable and support business intelligence (BI) activities, especially analytics. Data warehouses are solely intended to perform queries and analysis and often contain large amounts of historical data. The data within a data warehouse is usually derived from a wide range of sources such as application log files and transaction applications.

A data warehouse centralizes and consolidates large amounts of data from multiple sources. Its analytical capabilities allow organizations to derive valuable business insights from their data to improve decision-making. Over time, it builds a historical record that can be invaluable to data scientists and business analysts. Because of these capabilities, a data warehouse can be considered an organization’s “single source of truth.”

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The correct answer is: C. jdbc:mysql://panda.armstrong.edu/test. A database is a structured collection of data that is stored and organized in a way that allows efficient retrieval and manipulation of that data.

This is the correct format for a MySQL database URL. The "jdbc" protocol specifies that this is a Java Database Connectivity URL, and "mysql" specifies the type of database being used. The "//panda.armstrong.edu" part specifies the hostname where the database is located, and "/test" specifies the name of the database.

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Answer:

Here's a Python program that can determine if a sentence is a pangram or a perfect pangram based on the given input format:

import string

def is_pangram(sentence):

   # Convert the sentence to lowercase and remove all non-alphabetic characters

   sentence = sentence.lower().replace(" ", "").replace(".", "").replace(":", "").replace("\"", "")

   # Create a set of unique characters in the sentence

   unique_chars = set(sentence)

   # Check if the set of unique characters contains all 26 letters of the alphabet

   if len(unique_chars) == 26:

       return True

   else:

       return False

def is_perfect_pangram(sentence):

   # Convert the sentence to lowercase and remove all non-alphabetic characters

   sentence = sentence.lower().replace(" ", "").replace(".", "").replace(":", "").replace("\"", "")

   # Create a set of unique characters in the sentence

   unique_chars = set(sentence)

   # Check if the set of unique characters contains all 26 letters of the alphabet

   if len(unique_chars) == 26 and len(sentence) == 26:

       return True

   else:

       return False

# Input sentences from the text file

sentences = [

   "THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG.",

   "ALL YOUR BASE ARE BELONG TO US: SOMEONE SET US UP THE BOMB.",

   "\"NOW FAX A QUIZ TO JACK!\" MY BRAVE GHOST PLED.",

   "QUICK HIJINX SWIFTLY REVAMPED THE GAZEBO.",

   "NEW JOB: FIX MR GLUCK'S HAZY TV, PDQ.",

   "LOREM IPSUM DOLOR SIT AMET CONSECTETUR ADIPISCING ELIT.",

   "PACK MY BOX WITH FIVE DOZEN LIQUOR JUGS."

]

# Iterate through the input sentences

for sentence in sentences:

   # Check if the sentence is a perfect pangram

   if is_perfect_pangram(sentence):

       print("PERFECT:", sentence)

   # Check if the sentence is a pangram

   elif is_pangram(sentence):

       print("PANGRAM:", sentence)

   # If neither, print NEITHER

   else:

       print("NEITHER:", sentence)

This program uses two functions is_pangram() and is_perfect_pangram() to check if a sentence is a pangram or a perfect pangram, respectively. It then iterates through the input sentences and prints the appropriate output based on the pangram status of each sentence.

Identify desktop PC ports. Here are some common desktop PC port names:

1. USB Port (Universal Serial Bus) - Used for connecting various devices like keyboards, mice, printers, and external storage.
2. HDMI Port (High-Definition Multimedia Interface) - Used for transmitting video and audio signals, commonly used to connect monitors and TVs.
3. VGA Port (Video Graphics Array) - An older video output port used to connect monitors and projectors.
4. DVI Port (Digital Visual Interface) - A video output port used to connect digital displays like monitors and projectors.
5. Ethernet Port (RJ45) - Used for wired network connections, allowing devices to connect to the internet or local networks.
6. Audio Ports (3.5mm) - Consist of a line-in, line-out, and microphone port for connecting speakers, headphones, and microphones.
7. PS/2 Port - An older port for connecting keyboards and mice, usually color-coded with purple for keyboards and green for mice.
8. DisplayPort - A video output port for connecting digital displays, offering high-quality video and audio signals.

These are some of the most common desktop PC ports you'll encounter. If you have any specific ports you need help with, feel free to ask!

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The most likely cause of the authorization errors is enabling rotation in Secrets Manager causes the secret to rotate immediately, and the applications are using the earlier credential. Option B is correct.

When a secret is rotated in AWS Secrets Manager, the new secret is immediately used for authentication. Applications that are still using the old secret will encounter authentication errors.

In this case, the developer enabled credential rotation inside the Secrets Manager interface and configured the rotation to occur every 30 days. It is possible that some applications were still using the previous credential, which could have caused the authentication errors.

To resolve this issue, the applications must be updated to use the new credentials stored in Secrets Manager. Alternatively, the credential rotation interval could be adjusted to a longer time frame, to minimize the impact of credential rotation on applications that may not have been updated to use the new credentials yet.

Therefore, option B is correct.

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The access point must be operating in "conference" mode in order for the guest speaker to be able to connect to the network while attending the conference.

This mode is specifically designed for use in situations where a large number of users need to connect to a wireless network in a specific location, such as at a conference or other event. It typically provides a higher level of security and network management features than other modes, which makes it ideal for use in these types of situations.

Based on the scenario you described, where the guest speaker's laptop fails to display any available wireless networks at the conference, the access point must be operating in "hidden" or "non-broadcast" mode. In this mode, the access point does not publicly broadcast its SSID (Service Set Identifier), making it invisible to devices searching for available networks. To connect, the user needs to manually enter the SSID and password.

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Answer:

Thirty-two bit Media Access Control (MAC) addresses of the source and destination station are added to the packets in a process called encapsulation.

Explanation:

When data is transmitted over a network, it is broken down into packets that contain the actual data as well as some header information. The header contains various pieces of information, including the source and destination MAC addresses.

MAC (Media Access Control) addresses are unique identifiers assigned to network interface controllers (NICs) for communication on a network. They are 48-bit addresses, but are often represented as 32-bit addresses for convenience.

During the process of encapsulation, the header information is added to the packet, including the source and destination MAC addresses. This information is used by the network devices to forward the packet to its destination. The process of encapsulation and adding the header information takes place at each layer of the OSI model as the packet is passed down the stack, with each layer adding its own header information.

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Thirty-two bit MAC addresses of the source and destination station are added to the packets in a process called encapsulation.

This process involves placing the packet inside a header that contains additional information, such as the source and destination addresses. This helps ensure that the packet is properly routed to its intended destination. The use of 32-bit addresses allows for a large number of possible addresses to be used, which is important in a network with many devices.

Additionally, the use of packets helps ensure that data is transmitted efficiently and reliably, as each packet can be individually routed and retransmitted if necessary.

What is Encapsulation?

Encapsulation refers to the process of adding protocol-specific headers and trailers around data as it passes down the protocol stack.

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The BIP issue, where x1 and x2 are two mutually incompatible possibilities, requires the following constraint:

x1 + x2 = 1

Due to the fact that x1 and x2's decision variable values can only be 0 or 1, this constraint assures that only one of the alternatives can be chosen. When x1 is chosen (x1 = 1), x2 must also be chosen (x2 = 0), and vice versa.

The constraint x1 + x2 = 1 ensures that the decision-maker can only select one alternative, such as building a new factory or expanding an existing one, for example, if x1 represents the construction of a new factory and x2 indicates the expansion of an existing factory.

In conclusion, the constraint x1 + x2 = 1 ensures that only one option can be chosen and enforces the mutual exclusivity of the alternatives.

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The correct answer is D. Switch. Switches are network devices that connect directly to endpoints, such as computers or printers, and use MAC-based filtering to limit traffic flows. They are used to create a local area network (LAN) by providing multiple ports to connect devices.

Unlike hubs, switches are able to limit traffic flows by filtering based on the MAC addresses of the devices connected to them, which helps to improve network devices performance and security.

Devices used for network connectivity are those that receive and transmit data signals in analogue or digital format to and from other devices connected to the network using wired or wireless connections.

1) A computer can connect wired to an external network thanks to the network interface card.

2) To connect two or more networks, a router routes packets to the various networks.

3) A network hub sends data received through one port to all of the hub's other ports and the reverse is also true.

4) The modem, whose name is an acronym for modulator demodulator, is a device that converts digital impulses into analogue signals and vice versa and is used to send and receive data over telephone lines.

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The statement that is false is option E, which says that the fourth normal form (4nf) requires no dependent multivalued dependencies.

The statement e. fourth normal form (4nf): 3nf and no multivalued dependencies is false. This statement is not true because it incorrectly mentions "dependent multivalued dependencies."  This is because 4nf allows for dependent multivalued dependencies, but requires that they be represented in a separate table to maintain consistency and avoid redundancies. So, the correct statement for 4nf is "3nf and the absence of certain types of redundancies, including multivalued dependencies."

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True, An example of a manual access control system is a stand-alone system that requires the user to know a 3 or 4 digit number to gain access to the designated area.

A manual access control system is a security measure used to regulate and control access to a physical space or facility using manual methods, without the use of electronic or automated systems. It typically involves physical barriers, identification verification, and human intervention to determine and authorize entry or exit of individuals.

Here are some common examples of manual access control systems:

Physical barriers: Physical barriers such as fences, gates, turnstiles, or doors with locks can be used to control access to a premises. Authorized personnel can use keys, access cards, or combination codes to unlock or open these barriers, and entry or exit can be manually controlled by security personnel or designated individuals.

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The answer is "a. persist". The values stored in a function's local variables are not maintained between function calls and are reset each time the function is called.

When a function is called, it creates a new instance of its local variables, which are destroyed when the function returns. This means that any values stored in those variables are lost and do not persist between function calls. If a function needs to maintain state between calls, it can use global variables or other techniques to store values outside of the function's local scope. Understanding the scope of variables is an important concept in programming, as it can impact the behavior of functions and the overall functionality of a program. By understanding how variables work within functions, programmers can write more efficient and effective code.

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The most basic moral question involved in stem cell research is what constitutes human life. The study of stem cells' characteristics and possible applications in medicine is known as stem-cell research. Understanding stem cells' characteristics aids in our comprehension of how the development and homeostasis of the healthy and diseased body occur. Stem cells are the origin of all tissues.

What exactly is considered human life in the context of stem cell research is the most fundamental moral concern. This is because the use of embryonic stem cells involves the destruction of an embryo, which some argue is equivalent to ending a human life. Therefore, there is much debate surrounding the ethical implications of using embryonic stem cells for research purposes. It is important to consider both the potential benefits of stem cell research for medical advancements as well as the ethical concerns surrounding the use of embryos in this research. Ultimately, the decision about the use of embryonic stem cells must balance these competing interests and considerations.

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The most basic moral question involved in stem cell research is what constitutes human life.

What exactly is considered human life in the context of stem cell research is the most fundamental moral concern. This is because the use of embryonic stem cells involves the destruction of an embryo, which some argue is equivalent to ending a human life. Therefore, there is much debate surrounding the ethical implications of using embryonic stem cells for research purposes. It is important to consider both the potential benefits of stem cell research for medical advancements as well as the ethical concerns surrounding the use of embryos in this research. Ultimately, the decision about the use of embryonic stem cells must balance these competing interests and considerations.

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False. To appropriately reduce the local histogram into the global histogram, each process must execute MPI_Reduce for each bucket.

False. MPI_Reduce is used for performing reduction operations on data distributed across multiple processes. When reducing local histograms with many buckets into a global histogram, each process needs to call MPI_Reduce for each bucket in its local histogram to ensure that all values are properly accumulated into the corresponding bucket in the global histogram. Therefore, multiple calls to MPI_Reduce are necessary to fully reduce the local histograms into the global histogram.

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By default, optical drives get the next available drive letter after the last hard drive partition in Windows.

When a new drive is added to a Windows computer, it is assigned a drive letter. By default, hard drives are assigned drive letters first, starting with C: for the primary partition of the first hard drive. Optical drives, such as CD/DVD drives, are assigned drive letters next, starting with D: after the last hard drive partition. This means that if a computer has multiple hard drives with multiple partitions and then an optical drive is added, it will be assigned the next available drive letter after the last hard drive partition. This default behaviour can be changed in Windows Disk Management, where you can manually assign drive letters to any connected storage device.

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The "sendmail. cf" file houses Sendmail's instructions on how to process an email message. The configuration parameters found in this file govern how the Sendmail program should handle email messages.

Email, short for electronic mail, is a digital communication method that enables the transmission of messages and files between individuals or groups via the Internet or other computer networks. Emails can contain text, images, videos, or other types of files, and are usually composed, sent, and received. Electronic mail provides a quick and convenient way of communication that can be accessed from anywhere with an internet connection. It has become an essential part of both personal and professional communication and is used for various purposes such as exchanging information, sending newsletters, or marketing products and services. Email security measures such as encryption and spam filters are also important to protect users from online threats.

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Answer:

Metadata is data that describes other data.

Explanation:

In the context of databases, metadata refers to information that describes the structure, organization, and other characteristics of the data stored in the database. This includes information such as table and column names, data types, relationships between tables, and other properties that define how the data is stored and accessed.

Metadata is important for managing and using data effectively, as it provides context and meaning to the data itself. For example, metadata can help users understand what a particular data element represents, how it should be used, and what relationships it has with other data in the database.

Metadata is data that describes other data and provides detailed information about the underlying actual data, like file size, creation date, color depth, and image resolution.

Metadata is data that describes other data. In terms of digital information, metadata provides details about or summaries of the data, which could include information like the author's name, date of creation, size of the file, and any changes that have been made to it. It can range from the simple (like the file type or the time it was created) to the complex (like where it was created or who all has had access to it).

For example, a digital picture might include metadata that tells you about the size of the image, the color depth, the image resolution, the creation date, and so on. This information appears in the properties of the file. Therefore, metadata exists to provide essential information about the underlying actual data.

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In most word processing programs, red underlining is used to indicate spelling errors. This is a helpful feature because it makes it easy to identify and correct mistakes while writing.

When a word is spelled incorrectly, it will be underlined in red, prompting the writer to make the necessary changes. This feature is especially useful for those who struggle with spelling, as it can catch errors that might otherwise be missed.

In addition to red underlining, some word processing programs may also use blue underlining to indicate grammar errors or suggest alternative phrasing. Green underlining may be used to indicate issues with punctuation, such as a missing comma or a misplaced apostrophe.

Overall, the use of color coding in word-processing programs is a valuable tool for writers of all skill levels. Providing instant feedback on errors helps to improve the accuracy and clarity of written communication.

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Answer:

red

Explanation:

Using the protected keyword gives a member package access, meaning it can be accessed by other members within the same package. However, it also gives public access to any subclasses outside of the package. It does not give private access or block scope.

The private modifier specifies that only other members of the same class can access the member. The protected modifier restricts access to the member to within its own package access.

The public access modifier permits code from both inside and outside the class to access the class's methods and properties, whereas the private modifier prevents outside code from accessing the class's methods and properties.

Thus, private modifier is the member.

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In the TCP/IP stack, the c) Transport layer is concerned with controlling the flow of data, sequencing packets for reassembly, and encapsulating the segment with a TCP or UDP header.

The transport layer is the layer of the TCP/IP protocol stack responsible for end-to-end communication between applications or services running on different devices. The transport layer is located between the application layer and the internet layer, and it provides communication services that are transparent to the applications.

TCP is a connection-oriented protocol that provides reliable, ordered data transmission, while UDP is a connectionless protocol that provides fast, unreliable data transmission. So the answer is C. Transport.

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The question is asking about a type of lock that exists when concurrent transactions are granted read access based on a common lock.

This type of lock is known as a shared lock, which allows multiple transactions to read the same data at the same time without causing conflicts. When a transaction requests a shared lock on a piece of data, it is granted if no other transaction currently holds an exclusive lock on that data. The shared lock is then held until the transaction is complete and releases the lock, allowing other transactions to also request and be granted shared locks.

Therefore, the answer to the question is a) shared, as it is the type of lock that allows for concurrent bon the basis of a common lock.

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