Pass Your Introduction-to-IT Exam Easily - Real Introduction-to-IT Practice Dump Updated Jun 19, 2026
2026 Realistic Verified Free WGU Introduction-to-IT Exam Questions
WGU Introduction-to-IT Exam Syllabus Topics:
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NEW QUESTION # 17
A person is updating procedures for handling integer data within a database. Which value is an example of this data type?
- A. A single keystroke from a standard keyboard
- B. The number of baseball games in a season
- C. An approximation of pi as 3.14159
- D. Whether a bank account does or does not have money in it
Answer: B
Explanation:
Integer data is a numeric data type used to store whole numbers without fractional or decimal parts. In Information Technology and database systems, integers are commonly used for counts, quantities, identifiers, and values that naturally occur as whole numbers. The value "the number of baseball games in a season" is a count and is expressed as a whole number, making it a clear example of integer data. By contrast, 3.14159 includes decimal places and is typically stored as floating-point or decimal data rather than integer. A single keystroke is character data because it represents a symbol such as A or 7, not a quantity. Whether a bank account does or does not have money in it is a two-state condition and is best represented as Boolean data, such as true or false. Using correct data types improves storage efficiency, supports accurate validation rules, and helps ensure correct query behavior. Therefore, the correct example of integer data is the number of baseball games in a season.
NEW QUESTION # 18
A factory machine is turned on at 8:00 a.m. and is turned off at 5:00 p.m. The average output of the machine is 1,200 units per hour. Which term describes the statement, "It is 4:30 p.m., so the machine is still running," based on the data-information-knowledge-wisdom DIKW hierarchy?
- A. Wisdom
- B. Data
- C. Information
- D. Knowledge
Answer: D
Explanation:
The statement, "It is 4:30 p.m., so the machine is still running," reflects knowledge in the DIKW hierarchy because it applies known schedule information to infer the current state. The times 8:00 a.m. and 5:00 p.m.
represent information about operating hours once they are organized and given context. The time 4:30 p.m. is a data point, but the reasoning step, concluding the machine is still running because the current time falls within the operating window, is an application of that information. This inference is what separates knowledge from simple information. In Information Technology and operations management, this resembles using rules or business logic to deduce system status from logged schedules and timestamps. It is not wisdom because it does not involve deciding what should be done or weighing broader consequences. It is not merely information because it is not just a stated fact like the schedule; it is a conclusion drawn from the facts.
Therefore, the DIKW level best matching this statement is knowledge.
NEW QUESTION # 19
When would a business intelligence (BI) system be useful in making a decision?
- A. When determining the average salary of the company's executives
- B. When deciding if a restaurant should use more organic food in its menu, based on customer reviews and an analysis of current costs
- C. When deciding whether to promote an employee by looking at their annual sales performance
- D. When figuring out when to reorder store inventory for a particular stock keeping unit (SKU)
Answer: B
Explanation:
A BI system shines in this scenario because it leverages the power of data from various sources and turns that into actionable insights:
*Customer Sentiment Analysis: BI systems can incorporate natural language processing to analyze customer reviews, gauging sentiment and preferences towards organic food. Trends and patterns can be identified.
*Cost Analysis: BI can pull in data on ingredient costs (organic vs. conventional), preparing a comprehensive analysis of how switching to more organic food would impact operational expenses.
*Decision Support: By combining customer sentiment, cost analysis, and potentially market trends (through external data integration), a BI system can provide a holistic view of the trade-offs and the potential impact of increasing organic food usage.
NEW QUESTION # 20
Which part of the Uniform Resource Locator (URL) identifies the server on which the web page can be found?
- A. Protocol
- B. Domain name
- C. IP address
- D. Resource path ID
Answer: B
Explanation:
1.URL Anatomy:
oA URL (Uniform Resource Locator) is a unique web address that enables internet users to locate a specific website or online resource without having to know its IP address.
oThe structure of a URL consists of several components, each serving a specific purpose.
2.Domain Name:
oThe domain name is a critical part of the URL.
oIt follows the scheme (protocol) and precedes the path or port (if specified).
oThe domain name is composed of labels separated by dots (periods).
oEach label represents a specific level within the domain hierarchy.
oFor example:
In the URL https://www.example.com/path/to/resource, the domain name is example.com.
In the URL https://blog.example.co.uk, the domain name is blog.example.co.uk.
3.Effective Top-Level Domain (eTLD):
oThe domain name includes the top-level domain (TLD) and the second-level domain (SLD).
oThe TLD specifies the website type and follows the SLD.
oCommon TLDs include .com, .org, and .net.
oGeo-specific TLDs include country codes like .au, .uk, and .in.
4.Subdomain:
oA subdomain is a division of a website.
oWebmasters create subdomains to organize different site areas with distinct functions (e.g., blogs, forums, support portals).
oSubdomains appear before the domain name in the URL.
oExamples:
support.example.com (subdomain: support)
blog.example.co.uk (subdomain: blog)
5.Scheme (Protocol):
oThe scheme specifies the protocol that the server will use to access the page.
oCommon schemes include:
http (Hypertext Transfer Protocol)
https (Hypertext Transfer Protocol Secure)
oThe scheme always precedes the rest of the URL information.
oExample: https://www.example.com
6.Path:
oThe path indicates the specific location on the website where the user wants to go.
oIt can include directories, folders, specific page names, and file names.
oExample: https://www.example.com/path/to/resource
7.Conclusion:
oIn summary, the domain name is the part of the URL that identifies the server hosting the web page.
oIt plays a crucial role in directing users to the correct website.
References
1.What are the parts of a URL? | web.dev
2.Parts of a URL: A Short Guide | HubSpot Blog
NEW QUESTION # 21
What is one of the goals of the Association for the Advancement of Artificial Intelligence AAAI?
- A. It helps other organizations design and apply appropriate approaches to personal data collection, use, and disclosure.
- B. It promotes the development and deployment of systems that are reliable, usable, interoperable, and secure.
- C. It advances a scientific understanding of the problem-solving capabilities of machines.
- D. It certifies the quality of undergraduate educational programs in the computer science field.
Answer: C
Explanation:
AAAI is a professional scientific society focused on artificial intelligence, and one of its central goals is advancing scientific understanding of the mechanisms and capabilities of intelligent machines. In Information Technology, AAAI is associated with research communities that study machine learning, reasoning, natural language processing, robotics, and problem-solving methods. The goal described in option C matches this mission by emphasizing scientific understanding of machine problem-solving capabilities. Option A aligns more with accreditation organizations, such as ABET, which evaluates academic programs. Option B describes goals associated with standards and computing infrastructure reliability and interoperability, which is more aligned with organizations that focus on standards and systems engineering. Option D aligns more with privacy-focused organizations and governance frameworks. AAAI supports conferences, publications, and collaboration aimed at improving AI theory and practice. Therefore, the correct answer is that AAAI advances a scientific understanding of the problem-solving capabilities of machines.
NEW QUESTION # 22
What is the hardware component that contains soldered parts and slots for other pieces of hardware that can be removed?
- A. System clock
- B. Expansion bus
- C. Motherboard
- D. Hard drive
Answer: C
Explanation:
The motherboard is the main circuit board in a computer that contains soldered components and provides slots and connectors for removable hardware. In Information Technology hardware fundamentals, the motherboard holds essential components such as chipset circuitry, connectors, and sometimes integrated devices like audio or network controllers. It also provides sockets and slots for components that may be installed or replaced, such as the CPU socket, RAM slots, and expansion slots like PCIe for graphics cards or other add-on cards.
The motherboard includes pathways called buses that enable communication among the processor, memory, storage, and peripheral devices. A hard drive is a storage device and does not serve as the central board for system components. The system clock is a timing mechanism, not a physical board containing multiple slots.
An expansion bus refers to a communication pathway standard, not the full board that hosts multiple connectors and soldered parts. Therefore, the component described is the motherboard.
NEW QUESTION # 23
How are IT and globallzatlon related?
- A. IT allows businesses to create tax havens for global companies.
- B. IT allows businesses to have a global reach.
- C. IT allows businesses to reach global HIPAA compliance.
- D. IT allows businesses to create a global common gateway interface (CGI).
Answer: B
Explanation:
*Verified Answer: IT allows businesses to have a global reach.
*Explanation: Information Technology enables companies to connect and operate on an international scale, facilitating global communication, transactions, and collaboration123.
*References: 123
Therefore, the correct answer is B. IT allows businesses to have a global reach.
NEW QUESTION # 24
Which project management life cycle stage involves the development of project deliverables?
- A. Initiation
- B. Closure
- C. Planning
- D. Execution
Answer: D
Explanation:
Execution is the project management life cycle stage where project deliverables are developed and the planned work is carried out. In Information Technology projects, this is the phase in which teams build, configure, code, test, and implement the products, services, or systems defined in the project plan. Resources are assigned to tasks, progress is tracked, and project managers coordinate people, time, and tools to ensure work aligns with requirements and scope. Planning defines how the work will be done, including schedules, budgets, milestones, and risk responses, but it does not produce the final deliverables. Initiation establishes goals, scope boundaries, and approval to begin. Closure occurs after deliverables are completed and accepted and includes documentation, sign-off, handover, and lessons learned. Because the question asks which stage involves developing deliverables, it refers to the phase where actual production happens. Therefore, the correct answer is execution.
NEW QUESTION # 25
Which two actions are included in the role of a Domain Name System (DNS)?
Choose 2 answers
- A. Enables telnet communication between clients and servers
- B. Stores IP addresses and aliases in a table on the server
- C. Transfers files between TCP/IP servers on the web
- D. Translates human-friendly aliases into IP addresses
Answer: B,D
Explanation:
1.Translates human-friendly aliases into IP addresses: DNS serves as the "phone book" of the internet, converting user-friendly domain names (like www.example.com) into numerical IP addresses (such as
192.0.2.1) that computers and network devices use to locate one another on the internet12.
2.Stores IP addresses and aliases in a table on the server: DNS servers maintain records that map domain names to corresponding IP addresses. These records are stored in distributed databases across various DNS servers, ensuring efficient and reliable resolution of domain names1.
References
1.GeeksforGeeks: What is Domain Name System (DNS)?
2.Cloudflare: What is DNS? How DNS works
NEW QUESTION # 26
Which type of high-level language translates the entire program at once?
- A. Scripting languages
- B. Interpreted languages
- C. Assembly languages
- D. Compiled languages
Answer: D
Explanation:
Compiled languages follow this process:
1.Source Code: You write code in a high-level language (like C++, Java, or C#).
2.Compiler: A compiler translates the entire source code into machine-executable code (object code) at once.
3.Executable File: The object code is often packaged into an executable file.
4.Execution: The executable file can be run directly by the computer's operating system.
NEW QUESTION # 27
What is one example of a professional organization in the IT industry?
- A. Federal Communications Commission FCC
- B. Computer Professionals for Social Responsibility CPSR
- C. Institute for Telecommunication Sciences ITS
- D. National Security Agency NSA
Answer: B
Explanation:
Computer Professionals for Social Responsibility is an example of a professional organization in the IT industry. Professional organizations are generally membership-based groups that support practitioners through community, publications, conferences, ethical guidance, and advocacy related to professional practice. CPSR historically focused on the social and ethical impacts of computing, encouraging responsible technology use and informed public policy discussion. By contrast, the National Security Agency is a government intelligence and cybersecurity agency, the Institute for Telecommunication Sciences is a U.S. government research organization under the Department of Commerce, and the Federal Communications Commission is a government regulatory body overseeing communications. Those entities may influence IT and telecommunications, but they are not professional membership organizations in the standard sense used in IT fundamentals coursework. Professional organizations often provide networking opportunities, professional development resources, and codes of ethics or best-practice guidance for members. Therefore, among the options given, CPSR is the correct example of a professional organization in the IT industry.
NEW QUESTION # 28
Which securely best practice designates specific persons who are authorized to view and edit particular parts of a database system?
- A. Encryption
- B. Role-based access control
- C. Antiviral software
- D. Authentication
Answer: B
Explanation:
*Role-based access control (RBAC) is a securely best practice that designates specific persons who are authorized to view and edit particular parts of a database system.
*In RBAC, access permissions are assigned based on predefined roles or job functions within an organization.
*Here's how RBAC works:
1.Roles: Define roles based on job responsibilities (e.g., administrator, manager, user).
2.Permissions: Assign specific permissions (read, write, execute) to each role.
3.Users: Associate users with roles.
4.Access Control: Users inherit permissions from their assigned roles.
*Benefits of RBAC:
oGranularity: Allows fine-grained control over access rights.
oScalability: Easily manage access for large user bases.
oSecurity: Reduces the risk of unauthorized access.
*Example: An employee in the HR department might have read-only access to employee records, while an administrator has full editing rights.
*RBAC ensures that only authorized individuals can access specific data or perform certain actions within the database system.
References:
1.Vertabelo: Top 11 Best Practices for Database Design
2.Stack Overflow: Best Practice for Designing User Roles and Permission System
3.Resmo: 9 Access Control Best Practices
4.RedSwitches: Database Security in DBMS
5.LinkedIn: How to Choose a Database System: Best Practices
1: Vertabelo: Top 11 Best Practices for Database Design 2: Stack Overflow: Best Practice for Designing User Roles and Permission System 3: Resmo: 9 Access Control Best Practices 4: RedSwitches: Database Security in DBMS 5: LinkedIn: How to Choose a Database System: Best Practices
NEW QUESTION # 29
A production machine runs from 8:00 a.m. to 5:00 p.m., outputting 1,200 units per hour. Which component of the data-information-knowledge-wisdom DIKW hierarchy is exemplified by the statement, "Average output is
500 units per hour, so I should turn off the machine to identify the problem" in this scenario?
- A. Knowledge
- B. Data
- C. Information
- D. Wisdom
Answer: D
Explanation:
This statement fits wisdom in the DIKW hierarchy because it recommends a corrective action based on interpreted performance conditions. The output figures are information when they are organized in context, such as expected output being 1,200 units per hour and observed average output being 500 units per hour. The conclusion, "so I should turn off the machine to identify the problem," goes beyond recognizing the performance gap. It selects a course of action aimed at resolving the issue, reflecting judgment about what should be done. In IT and operational settings, this is similar to deciding to take a server offline to diagnose faults after recognizing abnormal performance metrics. Knowledge would include understanding that low output indicates a fault and knowing possible troubleshooting methods. Wisdom adds decision-making that considers timing, safety, and operational impact when choosing to stop the machine. Since the statement includes a deliberate decision to shut down the machine to investigate, it aligns with wisdom as the level focused on choosing the right action in context.
NEW QUESTION # 30
What translates and executes source code into machine language one line at a time?
- A. Interpreter
- B. Operating system
- C. Compiler
- D. Assembler
Answer: A
NEW QUESTION # 31
Which hardware component stores instructions for critical system activities?
- A. Graphics processing unit GPU
- B. Read-only memory ROM
- C. Random-access memory RAM
- D. Central processing unit CPU
Answer: B
Explanation:
Read-only memory, or ROM, stores instructions for critical system activities, especially the firmware used during startup. In Information Technology fundamentals, ROM contains non-volatile instructions that remain available even when the computer is powered off. These instructions typically include the system firmware responsible for initializing hardware, performing basic checks, and starting the boot process that loads the operating system. Because ROM is designed to retain its contents without power, it is appropriate for storing essential routines that the computer must access immediately when it turns on. RAM is volatile and loses contents when power is removed, so it cannot reliably store permanent startup instructions. The CPU executes instructions but does not store firmware permanently. The GPU is a specialized processor for graphics and parallel workloads and is not responsible for storing core boot instructions. Although modern systems often use flash-based firmware rather than older fixed ROM chips, this is still categorized as ROM or ROM-like non-volatile firmware storage in many IT documents. Therefore, the correct component is ROM.
NEW QUESTION # 32
What does a router do?
- A. Manages traffic by maintaining a table of known devices on the network
- B. Provides services, such as website hosting and routing, for various devices
- C. Converts incoming analog data into digital and outgoing digital data into analog
- D. Extends the cable range and allows connections to be made by increasing the signal strength
Answer: A
Explanation:
A router manages network traffic by using a routing table to determine where data packets should be sent. In Information Technology networking, a router connects different networks, such as a home local network and the internet, and forwards packets based on destination IP addresses. The routing table contains information about known networks and the best path to reach them. This allows the router to direct traffic efficiently between networks and to serve as a gateway for devices on a local area network. Option A describes a server, which provides services like hosting websites or applications. Option C describes a repeater, which boosts or regenerates signals to extend cable distance. Option D describes a modem, which modulates and demodulates signals to convert between analog and digital forms for transmission over certain media. While modern home routers may also include switch and wireless access point features, the core routing function is traffic management using routing information. Therefore, the correct answer is the option describing maintaining a table and managing traffic, which is option B.
NEW QUESTION # 33
What is a priority of business continuity?
- A. Extensive black-box testing
- B. Critical system replicas
- C. High on-sight redundancy
- D. Rapid system development
Answer: B
Explanation:
A priority of business continuity is maintaining critical system replicas so essential services can continue or be restored quickly after a disruption. In Information Technology and business continuity planning, organizations identify mission-critical systems and ensure there are standby resources such as replicated servers, replicated databases, or mirrored environments that can take over if the primary systems fail. Replicas support rapid recovery and reduced downtime by enabling failover and restoration without rebuilding from scratch. While on-site redundancy can help with minor failures, business continuity typically emphasizes resilience beyond a single location, since a site-wide incident can disable all on-site resources. Extensive black-box testing relates more to software testing methods than continuity priorities, and rapid system development is a software engineering concern, not the central focus of continuity. Critical system replicas may exist as hot, warm, or cold arrangements depending on recovery time objectives, but the underlying priority is ensuring a working copy of vital systems exists for continuity. Therefore, the correct answer is critical system replicas.
NEW QUESTION # 34
Which computing term describes a collection of hardware and software components that work together to meet the needs of the user?
- A. An operating system
- B. A hard drive
- C. A motherboard
- D. A computer system
Answer: D
Explanation:
The computing term that describes a collection of hardware and software components working together to meet the needs of the user is C. A computer system.
A computer system consists of both physical hardware components (like the central processing unit, monitor, keyboard, etc.) and software components (such as operating systems, applications, and programs).
References
1.WGU Introduction to IT (KSO1) Algorithm1.
NEW QUESTION # 35
Which type of services are Google Apps, Dropbox, and GoToMeeting?
- A. Software-as-a-Service (SaaS)
- B. Infrastructure-as-a-Service (laaS)
- C. Security-as-a-Service (SECaaS)
- D. Platform-as-a-Service (PaaS)
Answer: A
Explanation:
Google Apps, Dropbox, and GoToMeeting are all examples of Software-as-a-Service (SaaS). SaaS is a software distribution model in which a third-party provider hosts applications and makes them available to customers over the internet. This contrasts with IaaS, which provides virtualized computing resources over the internet, and PaaS, which offers hardware and software tools over the internet.
1.Google Apps (now Google Workspace) provides productivity and collaboration tools.
2.Dropbox offers cloud storage and file synchronization services.
3.GoToMeeting is an online meeting, desktop sharing, and video conferencing software.
All three services are accessed over the internet and do not require users to manage hardware or software updates, which is characteristic of the SaaS model.
References: The information is verified by multiple sources that discuss cloud service models, including articles that specifically categorize Google Workspace, Dropbox, and GoToMeeting as SaaS12. Additionally, Google's support documentation for GoToMeeting integration with Google Workspace further supports this classification3.
NEW QUESTION # 36
Which of the following takes requests from the application and translates it into the needed query for the database?
- A. SQL
- B. DBMS
- C. Driver
- D. OLDP
Answer: B
Explanation:
1.Database Driver Definition: A database driver is a software component that facilitates communication between an application and a specific DBMS. It acts as an intermediary, allowing the application to send commands, perform queries, and retrieve data from the database in a standardized way.
2.Translation Process: When an application sends a request (such as an SQL query) to the database, the database driver intercepts it. It then translates the request into a format compatible with the DBMS. This ensures that the database can process the query correctly.
3.Supported Protocols: Different database drivers use specific connectivity protocols, such as JDBC, ODBC, or ADO.NET. These protocols define how the driver communicates with the database.
4.Features of Database Drivers:
oEstablishing a Connection: The driver establishes a connection to the database, allowing the application to interact with it.
oExecuting Queries: It handles the execution of queries (e.g., SELECT, INSERT, UPDATE) on behalf of the application.
oFetching Results: The driver retrieves query results and provides them to the application.
oManaging Transactions: It supports transaction management (commit, rollback) to ensure data consistency.
oParameter Binding: The driver handles parameter binding for prepared statements.
oError Handling: It manages errors and exceptions related to database interactions.
5.Additional Functionality: Some drivers offer advanced features like connection pooling, data caching, and query optimization to enhance performance and scalability.
6.Examples of Database Drivers:
oJDBC (Java Database Connectivity): Used for Java applications.
oODBC (Open Database Connectivity): A widely used standard for Windows-based applications.
oADO.NET: Used in Microsoft .NET applications.
References 6. What Is a Database Driver and How Does It Work? 7. Database Drivers: How Do They Work?
NEW QUESTION # 37
A company needs a database in which data is stored in a plain text document and is separated by delimiters, such as commas. Which type of database is needed?
- A. Cloud
- B. Distributed
- C. Flat-file
- D. Hierarchical
Answer: C
Explanation:
A flat-file database is designed to store data in a single, plain text file where values are arranged in records and fields, often separated by delimiters such as commas, tabs, or semicolons. A common example is a CSV file, which stores each record on its own line and separates fields with commas. In Information Technology fundamentals, flat-file storage is frequently introduced as a simple way to maintain structured data without requiring a complex database management system. Flat-file databases work well for smaller datasets, simple lists, data exports, and situations where relationships between multiple tables are not required. However, because everything is typically stored in one file, flat-file systems can become inefficient and error-prone when data grows large or when updates must maintain consistency across repeated values. Hierarchical databases organize data in parent-child trees, distributed databases store data across multiple machines, and cloud databases focus on hosting and access models. For delimiter-separated plain text storage, the correct type is a flat-file database.
NEW QUESTION # 38
What are two signs of a phishing e-mail?
Choose 2 answers
- A. An e-mail from an organization you don't recognize
- B. Poor grammar and spelling errors
- C. Personalized greetings
- D. A link to a website sent by a family member
- E. Frequent reminders from the same e-mail address
Answer: A,B
Explanation:
1.Poor grammar and spelling errors: Phishing emails often contain mistakes in language, grammar, or spelling. These errors can be a red flag that the email is not legitimate.
2.An email from an organization you don't recognize: Be cautious if you receive an email from an unfamiliar organization. Verify the sender's legitimacy before taking any action.
References:
*1Cofense: 10 Signs of a Phishing Email
*2CrowdStrike: How to Spot a Phishing Email
*3Malwarebytes: Phishing Email - How to Identify and Avoid Phishing Attacks
*4SecurityMetrics: 7 Ways to Recognize a Phishing Email
NEW QUESTION # 39
Which technology is characteristic of second-generation computing?
- A. Nanotechnology
- B. Transistors
- C. Microprocessors
- D. Artificial intelligence
Answer: B
Explanation:
Second-generation computers, roughly from the mid-1950s to the early 1960s, are characterized by the replacement of vacuum tubes with transistors as the primary electronic switching device. Transistors were a major improvement because they were smaller in size, generated far less heat, used less electrical power, and were more reliable than vacuum tubes. This reduced maintenance needs and hardware failures, making computers more stable and suitable for wider organizational use. Performance also improved because transistors could switch faster than vacuum tubes, enabling quicker processing and more efficient operation.
During this era, computers also advanced in software support, with greater use of assembly language and the introduction of early high-level programming languages such as FORTRAN and COBOL. These developments made programming more practical and increased adoption in scientific calculations and business data processing. Microprocessors belong to a much later stage, artificial intelligence is typically linked to later generations, and nanotechnology is a modern fabrication concept. Therefore, transistors are the defining technology of second-generation computing.
NEW QUESTION # 40
What is a characteristic of cloud computing?
- A. Cloud computing provides services ranging from simple storage to load balancingfor large-scale computational processing.
- B. Cloud computing increases investments in IT in order to meet increasing IT demands.
- C. Cloud computing increases the need for internal IT personnel.
- D. Cloud computing requires client computers to download specific software.
Answer: A
Explanation:
1.On-demand self-service:
oCloud computing services do not require human administrators. Users can provision, monitor, and manage computing resources as needed.
oWith data centers worldwide, cloud providers have vast compute and storage assets ready for use.
oDevelopers can select resources and tools through a self-service portal, building applications without waiting for physical servers.
oAdmins set policies, but within those guardrails, employees have the freedom to build, test, and deploy apps.
References:
1.GeeksforGeeks: Characteristics of Cloud Computing
2.TechTarget: 8 Key Characteristics of Cloud Computing
NEW QUESTION # 41
What does a modem do?
- A. Provides services, such as website hosting and routing, for various devices
- B. Provides a barrier between a trusted private network and an untrusted network
- C. Serves as a connection between the customer network and the internet service provider
- D. Manages traffic by maintaining a table of known devices on the network
Answer: C
Explanation:
A modem serves as the connection between the customer network and the internet service provider. In Information Technology networking, modem stands for modulator-demodulator. Traditionally, it converts outgoing digital data from a computer or router into a form suitable for transmission over the provider's communication medium and converts incoming signals back into digital data. Depending on the service type, this may involve cable, DSL, fiber, or cellular technologies, each using specific signaling methods. The modem typically terminates the ISP line and hands off connectivity to a router or directly to a computer.
Option A describes routing or switching behavior rather than a modem function. Option B describes a server that offers hosted services. Option D describes a firewall, which protects a trusted network by filtering traffic from untrusted networks. Since the essential purpose of a modem is enabling communication between the customer premises equipment and the ISP network, the correct choice is that it serves as the connection between the customer network and the internet service provider. Therefore, the correct answer is option C.
NEW QUESTION # 42
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