CompTIA Network+ Network+ Network Implementation 2 — Questions and Answers
Question 1: A network technician needs to connect two buildings that are 400 meters apart. Which medium is most appropriate?
- Cat6a UTP cable
- Multimode fiber optic cable (Correct answer)
- Single-mode fiber optic cable
- Coaxial cable
Correct answer: Multimode fiber optic cable
Multimode fiber supports distances up to 550 meters at 10 Gbps, making it ideal for inter-building links under 2 km.
Question 2: Which 802.11 feature allows multiple access points to serve clients simultaneously on the same channel without interference?
- MIMO
- MU-MIMO
- OFDMA (Correct answer)
- Beamforming
Correct answer: OFDMA
OFDMA (Orthogonal Frequency Division Multiple Access), introduced in 802.11ax (Wi-Fi 6), divides channels into subcarriers to serve multiple clients simultaneously.
Question 3: A router receives a packet destined for 10.0.5.50. It has routes for 10.0.0.0/8, 10.0.5.0/24, and a default route. Which route is selected?
- 10.0.0.0/8
- 10.0.5.0/24 (Correct answer)
- Default route
- The packet is dropped
Correct answer: 10.0.5.0/24
Routers use longest prefix match, so 10.0.5.0/24 (/24 = 24 bits) is more specific than 10.0.0.0/8 (/8 = 8 bits) and is selected.
Question 4: Which switching feature prevents a port from forwarding frames until it has verified the port is loop-free?
- Port security
- BPDU guard
- Spanning Tree Protocol (Correct answer)
- Storm control
Correct answer: Spanning Tree Protocol
STP (Spanning Tree Protocol) places ports through listening and learning states before transitioning to forwarding, ensuring a loop-free topology.
Question 5: A company wants to segment IoT devices from corporate workstations on the same physical switch. What is the best solution?
- Use separate switches
- Implement VLANs (Correct answer)
- Deploy a firewall between segments
- Use MAC filtering
Correct answer: Implement VLANs
VLANs create logical network segments on the same physical switch, isolating IoT devices from corporate traffic without additional hardware.
Question 6: Which wireless security protocol uses SAE (Simultaneous Authentication of Equals) to replace the PSK handshake?
- WPA2-Personal
- WPA3-Personal (Correct answer)
- WPA2-Enterprise
- WPA3-Enterprise
Correct answer: WPA3-Personal
WPA3-Personal replaces WPA2's PSK with SAE, which provides forward secrecy and protects against offline dictionary attacks.
Question 7: A technician needs to provide internet access to a remote site over an existing PSTN connection with no other options. Which technology is most appropriate?
- DSL (Correct answer)
- Cable broadband
- Fiber to the premises
- Dial-up modem
Correct answer: DSL
DSL (Digital Subscriber Line) uses existing PSTN copper telephone lines to provide broadband speeds, unlike dial-up which shares the voice channel.
CompTIA Network+ Network+ Network Implementation 2
A network technician needs to connect two buildings that are 400 meters apart.
Which medium is most appropriate?