Network Basics: Servers and Peer-to-Peer Networks

Podcast Beta

Play an AI-generated podcast conversation about this lesson

Questions and Answers

Which medium uses electrical impulses for communication?

Glass or plastic fibers

Wireless transmission

Fiber-optic cable

Metal wires within cables (correct)

What do topology diagrams typically illustrate in a network?

Only the physical location of devices

Only the logical addressing scheme

The physical location and cable installation of intermediary devices (correct)

The types of media used for communication

What is the primary difference between physical and logical topology diagrams?

There is no difference; both illustrate network devices the same way.

Physical diagrams represent cable types, while logical diagrams illustrate network traffic patterns.

Physical diagrams show addressing protocols, while logical diagrams show device locations.

Physical diagrams illustrate device locations and installation, while logical diagrams illustrate device addressing. (correct)

Which term is interchangeable with 'port' in networking terminology?

Interface Signup and view all the answers

Which type of medium uses pulses of light for communication?

Optical fiber cables Signup and view all the answers

What is one primary function of an email server?

To run email server software for client access Signup and view all the answers

What describes an advantage of a Peer-to-Peer network?

Lower cost of implementation Signup and view all the answers

Which of the following is NOT a type of intermediary network device?

Email client Signup and view all the answers

What best defines an end device in a network?

A device where messages originate or terminate Signup and view all the answers

What is a disadvantage of Peer-to-Peer networks?

Lack of centralized administration Signup and view all the answers

What is a function of intermediary network devices?

Regenerate and retransmit data signals Signup and view all the answers

Which of the following describes file servers accurately?

They store corporate and user files for access. Signup and view all the answers

What is a common use case for Peer-to-Peer networks?

Transferring files and sharing printers Signup and view all the answers

What is a major benefit of satellite internet connections?

Availability in rural areas without ISPs Signup and view all the answers

What type of connection provides dedicated circuits within a service provider's network?

Leased Line Signup and view all the answers

Which technology allows businesses to extend LAN access into the WAN?

Ethernet Signup and view all the answers

What was a requirement for organizations before converged networks?

Separate cabling for data, voice, and video Signup and view all the answers

What do converged data networks carry over one link?

Data, voice, and video Signup and view all the answers

Which option describes a modem's function in dial-up connections?

Connects a telephone line to a network Signup and view all the answers

What is one characteristic of DSL internet connections?

Offers an always-on connection Signup and view all the answers

Which of the following describes the relationship between the technology used in converged networks?

Same set of rules and standards for all technologies Signup and view all the answers

What does the CCNA certification primarily demonstrate?

Knowledge of foundational technologies Signup and view all the answers

Which of the following topics is the new CCNA focused on?

IP foundation and security topics Signup and view all the answers

What is the purpose of the Specialist certification?

To certify skills related to specific job roles Signup and view all the answers

What type of skills do the new DevNet certifications validate?

Software development skills Signup and view all the answers

How can students find employment opportunities related to the Cisco Networking Academy?

By using the Talent Bridge Matching Engine Signup and view all the answers

Which of the following is NOT classified as an external threat?

Malicious employees Signup and view all the answers

What is a primary purpose of firewalls in network security?

To monitor network traffic for unauthorized access Signup and view all the answers

Which of these security solutions is specifically used for smaller networks?

Antivirus software Signup and view all the answers

Which security measure is considered an internal threat?

Accidental misuse by employees Signup and view all the answers

What is a feature of larger networks to enhance security?

Dedicated firewall systems Signup and view all the answers

Which of the following threats involves theft of personal information for fraudulent purposes?

Identity theft Signup and view all the answers

What kind of attack targets systems before the vendor knows of vulnerabilities?

Zero-day attacks Signup and view all the answers

Which of the following is a technique for preventing unauthorized access to a network?

Firewall filtering Signup and view all the answers

Study Notes

Server Types

Servers are computers that provide information to end devices.
There are various types of servers, including email servers, web servers, and file servers.
Email servers run email server software and clients use client software to access emails.
Web servers run web server software and clients use browser software to access web pages.
File servers store corporate and user files, and client devices access these files.

Peer-to-Peer Networks

A peer-to-peer network allows a device to be both a client and a server.
This design is recommended for small networks due to its ease of setup, lower cost, and simplicity.
Disadvantages of a peer-to-peer network include no centralized administration, lower security, and scalability limitations.
Peer-to-peer networks are suitable for simple tasks like transferring files and sharing printers.

End Devices

End devices are the origin or destination of messages in a network.
Data originates from and arrives at end devices, flowing through the network in between.

Intermediary Network Devices

Intermediary network devices connect end devices.
Examples include switches, wireless access points, routers, and firewalls.
These devices manage data flow, regenerate and retransmit signals, maintain network path information, and notify of errors.

Network Media

Network media transmits message data across a network.
Types include metal wires within cables (electrical impulses), glass or plastic fibers within cables (fiber-optic, uses light pulses), and wireless transmission (modulation of specific electromagnetic frequencies).

Network Representations

Network diagrams, often called topology diagrams, use symbols to represent devices within the network.
Important terms include Network Interface Card (NIC), Physical Port, and Interface.

Topology Diagrams

Physical topology diagrams show the physical location of devices, cables, and intermediary devices.
Logical topology diagrams illustrate devices, ports, and the network addressing scheme.

Common Types of Networks

Different types of networks include DSL (digital subscriber line), cellular, satellite, and dial-up.
DSL uses a telephone line for high-bandwidth, always-on internet access.
Cellular networks connect to the internet through cell phone networks.
Satellite connections offer a benefit to rural areas without internet service providers.
Dial-up is a low-bandwidth, inexpensive option using a modem and a telephone line.

Business Internet Connections

Businesses may require higher bandwidth and dedicated connections for their internet needs.
Different types of connections include dedicated leased lines, Ethernet WAN, DSL, and satellite.
Dedicated leased lines provide reserved circuits within the service provider's network for private voice and data networking.
Ethernet WAN extends LAN access technology to the WAN.
Business DSL options include Symmetric Digital Subscriber Lines (SDSL).
Satellite connections offer service when wired solutions are unavailable.

Converging Network

Before convergence, separate cables were used for telephone, video, and data, each using different technologies and standards.
Converged data networks carry multiple services, including data, voice, and video, over a single link and infrastructure.
The converged infrastructure utilizes the same set of rules and standards, simplifying management.

Network Security Threats

External threats include viruses, worms, Trojan horses, spyware, adware, zero-day attacks, threat actors, denial-of-service attacks, data interception and theft, and identity theft.
Internal threats can arise from lost or stolen devices, accidental misuse by employees, and malicious employees.

Network Security Solutions

Security solutions need to be implemented in multiple layers using various security tools.
Home or small office networks typically utilize antivirus and antispyware software, as well as firewall filtering to block unauthorized access.
Larger networks may require dedicated firewalls, access control lists (ACL), intrusion prevention systems (IPS), and virtual private networks (VPN).

IT Professional

The Cisco Certified Network Associate (CCNA) certification demonstrates foundational technology knowledge and keeps professionals relevant.
The new CCNA focuses on IP, security, wireless, virtualization, automation, and network programmability.
DevNet certifications validate software development skills at associate, specialist, and professional levels.
Specialist certifications validate skills specific to job roles and interests.
Networking job opportunities can be found at www.netacad.com under the Careers menu, by selecting Employment opportunities.
The Talent Bridge Matching Engine can also be used to locate Cisco, Cisco Partner, and Distributor job postings seeking Cisco Networking Academy students and alumni.

Studying That Suits You

Use AI to generate personalized quizzes and flashcards to suit your learning preferences.

Description

This quiz covers essential concepts about different types of servers, including email, web, and file servers. Additionally, it explores peer-to-peer networks, their advantages, and disadvantages. Test your understanding of how end devices interact within these network structures.