Podcast
Questions and Answers
Which of the following is NOT a function of a firewall?
Which of the following is NOT a function of a firewall?
What is the main disadvantage of a Peer-to-Peer network model?
What is the main disadvantage of a Peer-to-Peer network model?
Which type of network covers a distance of about 10 feet or less?
Which type of network covers a distance of about 10 feet or less?
What is a key focus when preparing for the CompTIA Network+ exam?
What is a key focus when preparing for the CompTIA Network+ exam?
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Which component acts as an intermediary between user devices and the internet?
Which component acts as an intermediary between user devices and the internet?
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Which network topology often leads to complexities in management and redundancy issues?
Which network topology often leads to complexities in management and redundancy issues?
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What is a primary characteristic of a Local Area Network (LAN)?
What is a primary characteristic of a Local Area Network (LAN)?
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Which of the following best describes the role of a router in a network?
Which of the following best describes the role of a router in a network?
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What is the primary benefit of a client/server model?
What is the primary benefit of a client/server model?
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What does a Network-attached Storage (NAS) device provide?
What does a Network-attached Storage (NAS) device provide?
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Which type of network is best suited for connecting multiple campuses within a city?
Which type of network is best suited for connecting multiple campuses within a city?
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What is the minimum score required to pass the CompTIA Network+ exam?
What is the minimum score required to pass the CompTIA Network+ exam?
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Which tool is important for network security and intrusion detection?
Which tool is important for network security and intrusion detection?
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What does PAN stand for in networking terminology?
What does PAN stand for in networking terminology?
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Which network topology features a direct connection between only two devices?
Which network topology features a direct connection between only two devices?
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Which topology is known for creating a single point of failure unless additional redundancy is implemented?
Which topology is known for creating a single point of failure unless additional redundancy is implemented?
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What is the primary characteristic of a Star Topology?
What is the primary characteristic of a Star Topology?
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Which type of network spans an entire city?
Which type of network spans an entire city?
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What does CAN stand for in networking?
What does CAN stand for in networking?
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In a Bus Topology, what happens if the main cable fails?
In a Bus Topology, what happens if the main cable fails?
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Which topology is characterized by a circular data path?
Which topology is characterized by a circular data path?
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What is a primary function of the Transmission Control Protocol (TCP)?
What is a primary function of the Transmission Control Protocol (TCP)?
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Which step is NOT part of the TCP three-way handshake process?
Which step is NOT part of the TCP three-way handshake process?
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What is the primary purpose of the ephemeral port in TCP communications?
What is the primary purpose of the ephemeral port in TCP communications?
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What is one key advantage of using TCP over UDP?
What is one key advantage of using TCP over UDP?
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Which mechanism does TCP use to prevent overwhelming the receiving end?
Which mechanism does TCP use to prevent overwhelming the receiving end?
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How does TCP ensure packets are delivered in order at the destination?
How does TCP ensure packets are delivered in order at the destination?
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What role do ports play in the TCP/IP suite?
What role do ports play in the TCP/IP suite?
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What differentiates User Datagram Protocol (UDP) from TCP?
What differentiates User Datagram Protocol (UDP) from TCP?
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What aspect of TCP communication ensures that lost packets are retransmitted?
What aspect of TCP communication ensures that lost packets are retransmitted?
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Which statement about TCP's operation at the OSI model is correct?
Which statement about TCP's operation at the OSI model is correct?
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What protocol is used for secure email transmission in contrast to standard SMTP?
What protocol is used for secure email transmission in contrast to standard SMTP?
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Which port does HTTPS traffic primarily use?
Which port does HTTPS traffic primarily use?
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What is a key advantage of using HTTPS over HTTP?
What is a key advantage of using HTTPS over HTTP?
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Which email protocol operates over port 110 and primarily downloads messages from a server?
Which email protocol operates over port 110 and primarily downloads messages from a server?
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Which of the following protocols is insecure due to transmitting data in plain text?
Which of the following protocols is insecure due to transmitting data in plain text?
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What does SFTP stand for, and what is its primary function?
What does SFTP stand for, and what is its primary function?
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Which protocol allows more flexible management of emails directly on the server?
Which protocol allows more flexible management of emails directly on the server?
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For which operation is port 21 primarily used in FTP?
For which operation is port 21 primarily used in FTP?
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What type of file transfer protocol is TFTP most suited for?
What type of file transfer protocol is TFTP most suited for?
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Which port does IMAPS operate on for secure email management?
Which port does IMAPS operate on for secure email management?
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What is a major limitation of FTP regarding data security?
What is a major limitation of FTP regarding data security?
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Which file transfer protocol is primarily used for Windows file sharing?
Which file transfer protocol is primarily used for Windows file sharing?
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What is the default port used for sending emails with SMTP?
What is the default port used for sending emails with SMTP?
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What distinguishes IMAP from POP3 in terms of email management capabilities?
What distinguishes IMAP from POP3 in terms of email management capabilities?
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What is the primary function of the Network Layer in the OSI model?
What is the primary function of the Network Layer in the OSI model?
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Which of the following is a format used for IPv4 addresses?
Which of the following is a format used for IPv4 addresses?
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What describes packet switching in the context of the Network Layer?
What describes packet switching in the context of the Network Layer?
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Which routing protocol is known for having routers share and update route information dynamically?
Which routing protocol is known for having routers share and update route information dynamically?
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What is the purpose of ICMP in networking?
What is the purpose of ICMP in networking?
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What type of address is used in network communication at Layer 3?
What type of address is used in network communication at Layer 3?
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Which of the following is a characteristic of TCP?
Which of the following is a characteristic of TCP?
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Which device combines Layer 2 switch and Layer 3 router functionality?
Which device combines Layer 2 switch and Layer 3 router functionality?
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What data unit does UDP use for data transmission?
What data unit does UDP use for data transmission?
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What type of flow control is implemented at Layer 3?
What type of flow control is implemented at Layer 3?
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Which of the following protocols is known for providing reliable transport of segments?
Which of the following protocols is known for providing reliable transport of segments?
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What mechanism does the three-way handshake in TCP involve?
What mechanism does the three-way handshake in TCP involve?
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Which of the following best describes the reliability of UDP?
Which of the following best describes the reliability of UDP?
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Which of these methods is typically used for transmitting data in audio and video streaming?
Which of these methods is typically used for transmitting data in audio and video streaming?
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What functionality does windowing provide in TCP?
What functionality does windowing provide in TCP?
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What is the key difference between connection-oriented and connectionless protocols?
What is the key difference between connection-oriented and connectionless protocols?
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Which statement is true about Layer 5 in the OSI model?
Which statement is true about Layer 5 in the OSI model?
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What is the primary role of the Presentation Layer (Layer 6)?
What is the primary role of the Presentation Layer (Layer 6)?
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Which of the following is a characteristic of Layer 4 in the OSI model?
Which of the following is a characteristic of Layer 4 in the OSI model?
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What are the special names given to Protocol Data Units (PDUs) at different OSI layers?
What are the special names given to Protocol Data Units (PDUs) at different OSI layers?
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What is the purpose of the Checksum in a UDP header?
What is the purpose of the Checksum in a UDP header?
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Which protocol is commonly used for voice and video connections within the session layer?
Which protocol is commonly used for voice and video connections within the session layer?
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What encryption protocol creates a secure tunnel for data transmission?
What encryption protocol creates a secure tunnel for data transmission?
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Which of the following protocols is NOT part of the application layer?
Which of the following protocols is NOT part of the application layer?
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What is the maximum transmission unit (MTU) for Ethernet frames?
What is the maximum transmission unit (MTU) for Ethernet frames?
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What differentiates ephemeral ports from well-known ports?
What differentiates ephemeral ports from well-known ports?
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What does the term 'encapsulation' refer to in networking?
What does the term 'encapsulation' refer to in networking?
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Study Notes
CompTIA Network+ (N10-009) Study Notes
- CompTIA Network+ is a first networking certification for IT or cybersecurity entry.
- It is a foundation in configuring, managing, and troubleshooting network infrastructure.
- The exam is designed for beginners with less than one year of IT experience or those who are CompTIA A+ certified.
- The course builds on hardware, software, and computer network basics, emphasizing enterprise network configuration, management, and troubleshooting.
- The exam is 90 minutes long and consists of up to 90 questions; including multiple choice, multiple select, and performance-based questions.
- A score of 720/900 or 75% is needed to pass.
- The exam covers five domains: Networking Concepts, Network Implementation, Network Operations, Network Security, and Network Troubleshooting.
- Each domain contains specific objectives.
- Use the official CompTIA Network+ student guide for additional resources.
- The premium course experience includes hands-on labs covering Windows desktops, servers, Linux servers, and network infrastructure.
- Resources are available, including closed captions, variable speed playback, downloadable study guides, Facebook groups, and Discord servers for community support.
Exam Tips
- Read each question multiple times to understand exactly what is being asked.
- Look out for distractors or red herrings in the answer choices.
- Pay close attention to words in questions that are bold, italicized, or in all uppercase.
- Base your answers on CompTIA Network+ knowledge from the course or official textbook, not personal workplace experience.
Network Fundamentals
- A network encompasses wired and wireless connections.
- Clients are devices like workstations, laptops, or tablets.
- Servers provide resources.
- Hubs connect devices (older technology with limitations).
- Switches ensure secure and efficient bandwidth utilization.
- Routers connect different networks and make intelligent forwarding decisions based on IP addresses.
- Firewalls are security barriers between internal networks and the internet, monitoring and controlling traffic.
- Load Balancers distribute traffic across multiple servers, preventing bottlenecks.
- Proxy Servers act as intermediaries between user devices and the internet, enhancing security and privacy.
- Network-attached Storage (NAS) provides dedicated file storage.
- Storage Area Networks (SANs) are used for high-speed consolidated block-level data storage.
- Wide Area Networks (WAN) connect networks over geographical distances (e.g., across cities).
- Network Resources: The client/server model uses a dedicated server for access to files, scanners, printers, and resources, with easy management and backup.
Network Geography
- Personal Area Network (PAN): Smallest network type, covering less than 10 feet (e.g., Bluetooth, USB).
- Local Area Network (LAN): Common in office settings, covering up to 100 meters.
- Campus Area Network (CAN): Spans numerous buildings covering several miles.
- Metropolitan Area Network (MAN): Connects locations across an entire city, potentially up to 25 miles.
- Wide Area Network (WAN): Covers extensive geographical areas connecting internal networks globally.
Wired Network Topology
- Refers to how network components are arranged.
- Includes links, nodes, clients, and servers
- Physical Topology depicts the physical connections and layout.
- Logical Topology depicts the flow of data in the network.
- Common Topologies: Point-to-Point, Ring, Bus, Star, and Hub-and-Spoke, Mesh.
Wireless Network Topology
- Infrastructure Mode: Centralized wireless network using a wireless access point.
- Ad Hoc Mode: Decentralized wireless network where each device directly communicates with each other.
Network Fundamentals (continued)
- Wireless Access Points (WAPs): Enable wireless connections to a wired network.
- Wireless-based networks utilize radio frequency waves.
- Routers, firewalls, load balancers, and proxy servers are networked devices.
OSI Model (& TCP Model Ports/Protocol)
- A layered model for network communication (physical, data link, network, transport, session, presentation, and application).
- Networks today operate under TCP/IP mode.
Layer 1 (Physical)
- The first layer of the OSI model.
- Data is binary bits represented as 1s and 0s.
- Transition modulation turns these bits into signals ( 0 and +5V or for 1).
- Connector Standards and wiring (e.g., RJ45, CAT5).
IP Addressing
- Used to identify devices on an internet network.
- IPv4 address is a 32-bit binary number written as four decimal numbers separated by dots.
- IPv4 address classes (A,B,C).
- Subnetting - divides a large network into smaller networks effectively using subnet masks
Other Network Concepts
- Three Main Types of Agreements: Non-disclosure Agreements (NDAs), Memorandums of Understanding (MOUs), and Service Level Agreements (SLAs).
- Internet Protocol Security (IPSec) is a secure network protocol.
- Cloud Computing, VPCs and Security groups, VPNs, Authentication methods (MFA, Kerberos, SAML), and Networking Protocols.
- Hardware and software like Cisco Discovery Protocol (CDP), Simple Network Management Protocol (SNMP), etc
- Network monitoring, using tools like Nmap, Ping, and Traceroute.
- Troubleshooting methods, including a seven-step troubleshooting process, and tools like tone generators, cable testers, etc.
- Understanding network concepts, like VLANs, routing, and traffic flow to solve issues.
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