CSA Network Administration & Security 3 — Questions and Answers
Question 1: A business customer wants to segment their network to separate guest Wi-Fi from internal systems. Which technology should be recommended?
- VLAN (Virtual Local Area Network) (Correct answer)
- DNS (Domain Name System)
- NAT (Network Address Translation)
- SNMP (Simple Network Management Protocol)
Correct answer: VLAN (Virtual Local Area Network)
VLANs logically separate a physical network into distinct segments, allowing guest traffic to be isolated from sensitive internal systems.
Question 2: What is the function of a network firewall?
- To speed up internet connections
- To monitor and control incoming and outgoing network traffic based on rules (Correct answer)
- To assign IP addresses to devices
- To store network configuration backups
Correct answer: To monitor and control incoming and outgoing network traffic based on rules
A firewall monitors and filters network traffic based on predefined security rules, blocking unauthorized access while allowing legitimate traffic.
Question 3: Which type of network attack involves overwhelming a server with traffic to make it unavailable?
- Phishing
- Man-in-the-Middle
- DDoS (Distributed Denial of Service) (Correct answer)
- SQL Injection
Correct answer: DDoS (Distributed Denial of Service)
A DDoS attack floods a server or network with traffic from multiple sources, exhausting resources and making the service unavailable to legitimate users.
Question 4: A customer's network uses a 192.168.1.x address scheme. What class of IP addressing is this?
- Class A
- Class B
- Class C (Correct answer)
- Class D
Correct answer: Class C
IP addresses starting with 192.168.x.x are Class C private IP addresses, commonly used in small to medium-sized local area networks.
Question 5: What is the purpose of NAT (Network Address Translation)?
- To encrypt data sent over the network
- To allow multiple devices to share a single public IP address (Correct answer)
- To assign IP addresses automatically
- To create secure tunnels between networks
Correct answer: To allow multiple devices to share a single public IP address
NAT allows multiple devices on a private network to share a single public IP address when communicating with the internet.
Question 6: Which wireless frequency band typically offers faster speeds but shorter range?
- 2.4 GHz
- 5 GHz (Correct answer)
- 900 MHz
- 1.8 GHz
Correct answer: 5 GHz
The 5 GHz band offers faster data transfer speeds but has a shorter range and is less effective at penetrating walls compared to the 2.4 GHz band.
Question 7: A sales associate is presenting network storage solutions. What does NAS stand for?
- Network Access Security
- Network Attached Storage (Correct answer)
- Node Administration System
- Network Analysis Software
Correct answer: Network Attached Storage
NAS (Network Attached Storage) is a dedicated file storage device connected to a network that allows multiple users and devices to access and share data.
CSA Network Administration & Security 3
A business customer wants to segment their network to separate guest Wi-Fi from internal systems.
Which technology should be recommended?