CIW-NTA Lesson 4 Questions and
Answers Rated A+
Question: What is the primary function of a router in a network?
Answer: A router directs data packets between different networks and manages traffic
within the network to ensure efficient communication and prevent collisions.
Question: Ho...
performance by isolating traffic within each VLAN.
Question: What is the difference between TCP and UDP in terms of data transmission?
Answer: ✔✔ TCP (Transmission Control Protocol) ensures reliable, ordered, and error-checked
delivery of data, while UDP (User Datagram Protocol) provides faster but less reliable data
transmission without error checking or ordering.
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, Question: How does network address translation (NAT) work and what is its purpose?
Answer: ✔✔ NAT translates private IP addresses within a local network to a public IP address
when communicating with external networks, allowing multiple devices to share a single public
IP address and providing a layer of security.
Question: What is the function of a firewall in network security?
Answer: ✔✔ A firewall monitors and controls incoming and outgoing network traffic based on
predefined security rules, protecting the network from unauthorized access and potential threats.
Question: What is the OSI model and why is it important in networking?
Answer: ✔✔ The OSI (Open Systems Interconnection) model is a conceptual framework that
standardizes the functions of a network into seven layers, helping to understand and troubleshoot
network communication by breaking it into manageable components.
Question: Describe what is meant by network topology and name a common type.
Answer: ✔✔ Network topology refers to the physical or logical arrangement of devices and
connections in a network. A common type is the star topology, where all devices are connected
to a central hub or switch.
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