CPCT Network Topology & Configuration 2 — Questions and Answers
Question 1: In a star topology, what happens to the rest of the network if a single workstation's cable fails?
- The entire network goes down
- Only that workstation loses connectivity (Correct answer)
- The network splits into two segments
- All workstations on the same switch port are affected
Correct answer: Only that workstation loses connectivity
In a star topology, each device connects independently to a central switch, so a single cable failure only isolates that one workstation.
Question 2: Which structured cabling standard defines the minimum requirements for a telecommunications room (TR) in a commercial building?
- ANSI/TIA-568
- ANSI/TIA-569 (Correct answer)
- ANSI/TIA-606
- ANSI/TIA-607
Correct answer: ANSI/TIA-569
ANSI/TIA-569 covers pathways and spaces, including specifications for telecommunications rooms.
Question 3: A technician is installing cable in a building that uses a collapsed backbone. Where is the backbone termination point in this design?
- At each floor's intermediate distribution frame (IDF)
- At a single main distribution frame (MDF) serving the entire building (Correct answer)
- At each workstation outlet
- Distributed equally across multiple equipment rooms
Correct answer: At a single main distribution frame (MDF) serving the entire building
A collapsed backbone consolidates all backbone connections at a single MDF rather than distributing them across multiple IDFs.
Question 4: What is the maximum segment length for a 1000BASE-T (Gigabit Ethernet) connection over Cat 5e UTP?
- 55 meters
- 100 meters (Correct answer)
- 150 meters
- 300 meters
Correct answer: 100 meters
1000BASE-T supports a maximum channel length of 100 meters over Cat 5e UTP, following the TIA-568 standard.
Question 5: In a mesh topology used for network redundancy, how many links are required to fully connect 5 nodes so every node connects directly to every other node?
- 5
- 8
- 10 (Correct answer)
- 20
Correct answer: 10
A full mesh of n nodes requires n(n-1)/2 links; for 5 nodes that is 5×4/2 = 10 links.
Question 6: Which cabling component is used at the demarcation point to separate the service provider's network from the customer's premises cabling?
- Patch panel
- Network interface device (NID) (Correct answer)
- Cross-connect block
- Consolidation point
Correct answer: Network interface device (NID)
The network interface device (NID) marks the boundary between the service provider's responsibility and the customer's premises wiring.
Question 7: When designing a hierarchical network for a large campus, which layer provides high-speed backbone connectivity between distribution layer switches?
- Access layer
- Core layer (Correct answer)
- Distribution layer
- Aggregation layer
Correct answer: Core layer
The core layer provides high-speed, low-latency backbone connectivity between distribution switches in a hierarchical campus network design.
CPCT Network Topology & Configuration 2
In a star topology, what happens to the rest of the network if a single workstation's cable fails?