2.8 Explain networking tools and their purposes
📘CompTIA A+ Core 1 (220-1201)
Cable Stripper – Networking Tool
A cable stripper is a small hand tool used in networking to prepare cables for connectors. It is especially important when working with copper cables like Ethernet (twisted-pair) cables and coaxial cables.
Purpose
The main purpose of a cable stripper is to:
- Remove the outer insulation of a cable without cutting the internal wires.
- Prepare the cable so connectors (like RJ-45 for Ethernet) can be attached.
- Ensure clean and accurate connections, which are critical for network performance.
Think of it as “preparing the cable so it can communicate properly” — the inner wires must be exposed without damage.
How It Works
- Measure and Mark
- Most cable strippers have marks or adjustable stops to cut just the right length of insulation.
- For Ethernet cables, usually about 1 inch (2.5 cm) of insulation is removed.
- Cut the Insulation
- The cable is placed into the stripper.
- When you squeeze the handles, a small blade cuts around the insulation.
- Remove the Insulation
- Pull the tool or the cut section of insulation away, leaving the wires inside intact and ready for termination.
Types of Cables Used with Strippers
- Twisted-pair cables (Cat5e, Cat6, Cat6a)
- Used in Ethernet networking.
- Stripping exposes the twisted pairs to attach RJ-45 connectors.
- Coaxial cables (RG-6, RG-59)
- Used in cable TV, satellite, and some network connections.
- Stripping prepares the center conductor and shielding for connectors like F-type connectors.
Why It’s Important in Networking
- Prevents cable damage: Using scissors or knives can nick wires, causing signal problems.
- Speeds up installation: Especially when making multiple patch cables in a server room or office.
- Ensures proper connections: Correctly stripped cables are easier to terminate into connectors and keystone jacks.
Example Use in IT Environment
- Building a Patch Cable
- A technician needs a custom-length Ethernet cable for a switch to a workstation.
- They use a cable stripper to remove the insulation from both ends before crimping RJ-45 connectors.
- Installing Coaxial Internet Cable
- A tech strips RG-6 coaxial cable to attach a wall plate or modem connector.
Key Points for the Exam
- Definition: A hand tool used to remove insulation from cables without damaging wires.
- Purpose: Prepares cables for connectors to ensure reliable network connections.
- Used with: Twisted-pair Ethernet cables (Cat5e/Cat6) and coaxial cables.
- Exam Tip: Know that it’s different from crimpers, which attach connectors, and punch-down tools, which are used in patch panels or keystone jacks.
✅ Quick Tip to Remember:
- Strip → Terminate → Test
- Stripping comes first, then attaching connectors, then testing the cable.
