The Device That Acts As A Connection Point Between Computers

The Device That Acts As A Connection Point Between Computers And Ca

The device that acts as a connection point between computers and can filter and forward data to a specified destination is called a(n): a. NIC. b. router. c. hub. d. switch.

The method of slicing digital messages into parcels, transmitting them along different communication paths, and reassembling them at their destinations is called: a. multiplexing. b. ATM. c. packet switching. d. packet routing.

Which type of network serves a small group of computers, allowing them to share resources and peripherals without using a dedicated server? a. LAN b. Ring c. Peer-to-peer d. Wireless

Which type of network would be most appropriate for a business that comprised three employees and a manager located in the same office space, whose primary need is to share documents? a. PAN b. Campus area network c. Domain-based LAN d. Peer-to-peer network

Which of the following is considered by many to be the defining Web 2.0 application? a. Instant messaging b. Social networking c. Blogging d. E-mail

Instant messaging is a type of ________ service. a. chat b. e-mail c. cellular d. wireless

Prior to the development of ________, computer networks used leased, dedicated telephone circuits to communicate with other computers in remote locations. a. servers b. packet switching c. coaxial cable d. routers

A(n) ________ is a box consisting of a radio receiver/transmitter and antennas that links to a wired network, router, or hub. a. access point b. hot spot c. wireless router d. server

Electronic data are more susceptible to destruction, fraud, error, and misuse because information systems concentrate data in computer files that: a. are unprotected by up-to-date security systems. b. may be accessible by anyone who has access to the same network. c. can be opened with easily available software. d. are easily decrypted.

The Internet poses specific security problems because: a. Internet standards are universal. b. it changes so rapidly. c. it was designed to be easily accessible. d. Internet data is not run over secure lines.

Which of the following statements about Internet security is not true? a. The use of P2P networks can expose a corporate computer to outsiders. b. VoIP is more secure than the switched voice network. c. A corporate network without access to the Internet is more secure than one that provides access. d. Instant messaging can provide hackers access to an otherwise secure network.

Evil twins are: a. e-mail messages that mimic the e-mail messages of a legitimate business. b. Trojan horses that appears to the user to be a legitimate commercial software application. c. bogus wireless network access points that look legitimate to users. d. fraudulent Web sites that mimic a legitimate business’s Web site.

Redirecting a Web link to a different address is a form of: a. snooping. b. spoofing. c. sniffing. d. war driving.

Your company, an online clothing store, has calculated that a loss of Internet connectivity for 5 hours results in a potential loss of $1,000 to $2,000 and that there is a 50% chance of this occurring. What is the annual expected loss from this exposure? a. $750 b. $1,000 c. $1,500 d. $3,000

Analysis of an information system that rates the likelihood of a security incident occurring and its cost is included in a(n): a. risk assessment. b. security policy. c. business impact analysis. d. AUP.

Biometric authentication: a. only uses physical measurements for identification. b. can use a person’s voice as a unique, measurable trait. c. is inexpensive. d. is used widely in Europe for security applications.

You have been asked to implement enterprise software for a manufacturer of kitchen appliances. What is the first step you should take? a. Select the functions of the system you wish to use. b. Select the business processes you wish to automate. c. Map the company’s business processes to the software’s business processes. d. Map the software’s business processes to the company’s business processes.

Supply chain complexity and scale increases when firms: a. produce products and services that coordinate with hundreds or more firms and suppliers. b. manage the procurement, manufacturing, and distribution functions themselves. c. modify their existing workflows to comply with supply-chain management systems. d. move to globalization.

Supply chain software can be classified as either supply chain ________ systems or supply chain ________ systems. a. demand; continual b. push; pull c. upstream; downstream d. planning; execution

A build-to-order supply-chain model is also called a ________ model. a. supply-based b. replenishment-driven c. demand-driven d. push-based

________ modules deal with issues such as setting objectives, employee performance management, and performance-based compensation. a. SCM b. SFA c. ERM d. PRM

________ modules use many of the same data, tools, and systems as CRM to enhance collaboration between a company and its selling partners. a. SFA b. PRM c. SCM d. ERM

Which of the following is not one of the four types of customers described in the case study on Graybar? a. Niche customers b. Opportunistic customers c. Marginal customers d. Service-drain customers

Which metric is based on the relationship between the revenue produced by a specific customer, the expenses incurred in acquiring and servicing that customer, and the expected life of the relationship between the customer and the company? a. Cost per sale b. CLTV c. Cost per lead d. Churn rate

The measurement of the number of customers who stop using or purchasing products or services from a company is called: a. switching costs. b. switch rate. c. churn rate. d. CLTV.

Paper For Above instruction

Introduction

In the realm of computer networks, understanding the various components and their functions is essential for grasping how digital communication operates. The initial question addresses the device that serves as a central connection point between computers and can filter and forward data to specific destinations — the network switch. This device, along with others like NICs, routers, and hubs, forms the backbone of network infrastructure, enabling efficient data transfer within and between networks.

Device Functions and Network Communication

The network switch (Option D) is pivotal because it selectively directs data packets to their designated destinations, reducing unnecessary traffic and enhancing network efficiency. In contrast, NICs (Network Interface Cards) facilitate individual device connectivity, hubs broadcast data indiscriminately, and routers manage data transfer between different networks. The method of slicing digital messages into parcels and transmitting them via multiple paths—called packet switching—optimizes data transfer by making networks more scalable and resilient.

Types of Networks and Applications

The descriptions of various network types like LAN (Local Area Network), peer-to-peer networks, and campus networks highlight their unique features and suitability for different organizational needs. For instance, peer-to-peer networks, where resources are shared directly between computers, are ideal for small groups without a dedicated server. Larger networks, such as LANs, facilitate resource sharing within an organization efficiently.

Web 2.0 and Communication Technologies

Web 2.0 applications, including social networking and blogging, have revolutionized online interaction, emphasizing user-generated content and social collaboration. Instant messaging, a conversational form of communication, exemplifies real-time data exchange and is classified as a chat service. Such technologies underpin modern digital communication ecosystems, posing unique security challenges.

Network Development and Security Challenges

Before packet switching became commonplace, networks relied on leased telephone circuits for remote communication—highlighting the evolution of network infrastructure. Wireless access points and routers, essential for modern mobility, connect wireless devices to wired networks via radio signals. However, the proliferation of digital data intensifies security risks, as information stored in digital files becomes susceptible to unauthorized access, theft, or corruption.

Security Concerns and Threats

The internet's open architecture presents unique security vulnerabilities, including threats from evil twins—malicious access points mimicking legitimate networks—and link redirection, which can deceive users into visiting fraudulent websites. Securing data transmission, preventing eavesdropping, and safeguarding against malware require robust measures, including encryption, firewalls, and security protocols. Despite these measures, the inconsistent standards and rapid evolution of threats make internet security a complex challenge.

Biometric Authentication and System Implementation

Biometric authentication enhances security by utilizing unique biological traits such as fingerprints, facial recognition, or voice patterns. While effective, the widespread adoption varies based on cost and regional regulations. Implementing enterprise software requires a structured approach—beginning with mapping business processes and progressively integrating software modules to automate workflows, which improves operational efficiency.

Supply Chain and Customer Relationship Management

The complexities of global supply chains, involving numerous partners and processes, necessitate sophisticated supply chain management (SCM) software. These systems facilitate demand forecasting, logistics planning, and execution, enabling organizations to respond swiftly to market changes. Customer relationship management (CRM) modules, along with sales and partner modules like SFA and PRM, help organizations understand customer behavior, nurture relationships, and improve customer lifetime value (CLTV). Recognizing different customer types—niche, opportunistic, marginal, and service-drain—allows for targeted marketing and service strategies, ultimately reducing churn rates and maximizing revenue.

Conclusion

In conclusion, understanding the foundational devices, network types, security vulnerabilities, and management systems is vital for leveraging modern information technologies effectively. The evolution from basic connectivity devices to complex, integrated supply chain and customer management systems underscores the importance of strategic implementation and security in achieving organizational success in the digital age.

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