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Questions and Answers
A firewall operates exclusively as a hardware device, offering robust perimeter security.
A firewall operates exclusively as a hardware device, offering robust perimeter security.
False (B)
Host-based firewalls are installed on individual systems, monitoring and controlling network traffic specifically for that machine.
Host-based firewalls are installed on individual systems, monitoring and controlling network traffic specifically for that machine.
True (A)
An Intrusion Detection System (IDS) actively blocks malicious traffic, preventing attacks in real-time.
An Intrusion Detection System (IDS) actively blocks malicious traffic, preventing attacks in real-time.
False (B)
The OSI model contains seven layers that standardize how computer systems communicate over a network.
The OSI model contains seven layers that standardize how computer systems communicate over a network.
The TCP protocol is responsible for ensuring reliable, ordered, and error-checked delivery of data between applications.
The TCP protocol is responsible for ensuring reliable, ordered, and error-checked delivery of data between applications.
A MAC address is a unique identifier assigned to each network interface controller (NIC) and can be changed without affecting network communication.
A MAC address is a unique identifier assigned to each network interface controller (NIC) and can be changed without affecting network communication.
An IP address uniquely identifies a device on a network and consists of a network address and a host address.
An IP address uniquely identifies a device on a network and consists of a network address and a host address.
IPv6 addresses are represented by 32-bit hexadecimal values, providing a significantly larger address space compared to IPv4.
IPv6 addresses are represented by 32-bit hexadecimal values, providing a significantly larger address space compared to IPv4.
Network-based firewalls are implemented solely in software and protect only the host operating system they run on
Network-based firewalls are implemented solely in software and protect only the host operating system they run on
A firewall's only function is to block unwanted traffic.
A firewall's only function is to block unwanted traffic.
The Application Layer of the OSI model does NOT directly interact with the end-user; instead, it provides services to other layers.
The Application Layer of the OSI model does NOT directly interact with the end-user; instead, it provides services to other layers.
IDS/IPS systems are positioned outside the firewall to analyze traffic before it enters the network.
IDS/IPS systems are positioned outside the firewall to analyze traffic before it enters the network.
TCP guarantees data delivery through a 'best-effort' approach, with no error correction mechanisms.
TCP guarantees data delivery through a 'best-effort' approach, with no error correction mechanisms.
MAC addresses operate at the Network Layer of the OSI model to route data packets.
MAC addresses operate at the Network Layer of the OSI model to route data packets.
IPv4 addresses consist of 4 octets, each represented by a decimal number between 0 and 256.
IPv4 addresses consist of 4 octets, each represented by a decimal number between 0 and 256.
Intrusion detection or prevention systems are exclusively hardware tools and cannot be implemented as software.
Intrusion detection or prevention systems are exclusively hardware tools and cannot be implemented as software.
The OSI model describes five layers that computer systems use to communicate over a network.
The OSI model describes five layers that computer systems use to communicate over a network.
MAC addresses identify every device on a network.
MAC addresses identify every device on a network.
Ip address consist of 3 parts, Network Address, Host Address and Subnet Mask.
Ip address consist of 3 parts, Network Address, Host Address and Subnet Mask.
IPv4 and IPv8 are types of IP Addresses.
IPv4 and IPv8 are types of IP Addresses.
Flashcards
What is a Firewall?
What is a Firewall?
A network security system that monitors and controls incoming and outgoing network traffic based on predetermined security rules.
Types of Firewalls
Types of Firewalls
A firewall installed on an individual system; Network Based use both hardware and software, operating at the network level.
What are IDS/IPS?
What are IDS/IPS?
A hardware or software tool placed between the internet and firewall, alerting and preventing outside attacks.
OSI Model
OSI Model
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Mac Address
Mac Address
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IP Address
IP Address
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Types of IP Address
Types of IP Address
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Study Notes
Firewalls Explained
- A firewall is used to maintain network security.
- Firewalls can be either hardware or software.
- Firewalls prevent unauthorized access to a private network by filtering information that is received from the internet.
- Firewalls block unwanted traffic and allow wanted traffic.
Firewall Types
- Host-based firewalls are software firewalls installed on a system.
- Network-based firewalls combine both hardware and software and operate at the network area.
IDS/IPS Defined
- Intrusion Detection/Prevention Systems are hardware/software tools.
- They are placed between the internet and the firewall.
- They alert and prevent a network from outside attacks including viruses, malware, and hackers.
- They monitor traffic flowing through a network.
OSI Reference Model
- The OSI Model is also known as Open System Interconnect.
- It describes seven layers that computer systems use to communicate over a network.
- These layers include Application, Presentation, Session, Transport, Network, Data Link, and Physical.
MAC Address
- MAC Addresses identify every device on a network.
IP Address
- Internet Protocols (IP) serve as identifiers for computers or devices on a network.
- IP addresses consist of a Network Address and a Host Address.
IP Address Types
- IPv4
- IPv6
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