PBQ 1 of 6 · Networking Concepts — IP Subnetting
Allocate Subnets to Departments Using VLSM
Your organization has been assigned the network block 192.168.50.0/24. You must use Variable Length Subnet Masking (VLSM) to efficiently allocate subnets to five departments. Departments must receive the smallest subnet that satisfies their host requirements.
For each department below, enter the correct: Network Address, Subnet Mask, and Usable Host Range (first usable – last usable host).
For each department below, enter the correct: Network Address, Subnet Mask, and Usable Host Range (first usable – last usable host).
📐 Allocate subnets starting from 192.168.50.0 and working sequentially, largest department first. Use standard CIDR notation where applicable.
| Department | Hosts Needed | Subnet Size | Network Address / CIDR | Subnet Mask | First Usable Host | Last Usable Host |
|---|
Explanation
PBQ 2 of 6 · Networking Concepts — OSI Model
Map Protocols, Devices & PDUs to the Correct OSI Layer
A Network+ exam candidate is building an OSI reference card. Drag each item from the bank below into the correct OSI layer column. Each item belongs to exactly one layer. Layers 1–7 are shown left to right.
🖱 Drag items from the bank to the correct OSI layer. Some layers may receive multiple items. Drag back to the bank to remove.
Item Bank
Correct OSI Placement
PBQ 3 of 6 · Network Troubleshooting — CLI Tools
Diagnose and Resolve a Network Connectivity Issue
A workstation (IP: 10.0.10.55) cannot reach the application server (10.0.10.200) or browse the internet. The default gateway is 10.0.10.1. DNS is 8.8.8.8. Use the CLI below to:
- Verify IP configuration and identify the misconfiguration.
- Test connectivity to the gateway and server.
- Trace the route to an external host to identify where traffic is failing.
- Verify DNS resolution is working.
- Inspect the ARP table and active connections as needed.
💡 Try:
ipconfig, ping, tracert, nslookup, netstat, arp -a, route print, pathping, helpMicrosoft Windows [Version 10.0.19045.4046]
(c) Microsoft Corporation. All rights reserved.
C:\Users\technician>
Explanation
PBQ 4 of 6 · Network Architecture — Device Placement
Place Network Devices in the Correct Topology Positions
A small business is building a new network. The diagram below shows the topology with six labeled positions (A–F). Drag the correct network device from the bank into each position based on its role in the topology and the connections shown.
🖱 Drag each device from the bank below the diagram into the correct labeled position (A–F).
🌐
ISP
ISP
A
B
C
D
E
F
Device Bank
Correct Placement & Explanation
PBQ 5 of 6 · Network Security — VLAN Configuration
Configure VLANs on a Cisco-Style Managed Switch
A new managed switch needs to be configured for three VLANs. Use the CLI simulation below to configure the switch exactly as specified:
- VLAN 10 — "MGMT" — Ports: Fa0/1, Fa0/2 (access mode)
- VLAN 20 — "USERS" — Ports: Fa0/3 – Fa0/8 (access mode)
- VLAN 30 — "SERVERS" — Ports: Fa0/9, Fa0/10 (access mode)
- Gi0/1 — Trunk port (carries all VLANs to the router)
⌨ Type Cisco IOS commands. Start with
enable → conf t. Try ? or help for command hints. Port LEDs update as you configure them.Catalyst 2960 — 12-Port Simulation
VLAN 10 MGMT
VLAN 20 USERS
VLAN 30 SERVERS
Trunk
Unassigned
Switch simulation ready. Type 'enable' to begin.
Type 'help' or '?' for available commands.
Switch>
Explanation
PBQ 6 of 6 · Networking Concepts — Ports & Protocols
Match Each Port Number to Its Correct Protocol and Function
A network administrator is creating an access control list (ACL) and needs to verify port numbers. Drag each port/protocol item from the bank on the left to the description on the right that correctly identifies its function and transport protocol (TCP or UDP).
🖱 Each port/protocol is used exactly once. Drag back to the bank to remove from a slot.
Port / Protocol Bank
Descriptions
Correct Matches