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Showing 20 results · Page 7 for “CompTIA”. More results are available below.
Network+ · Network Operations
Good operations depend on documents you can trust. Physical diagrams show cable runs, racks and patch panels; logical diagrams show subnets, VLANs and routing. A wiring or port map records w…
Network+ · Network Operations
Voice and video traffic tolerate some loss but not delay or unevenness. Latency is one-way or round-trip delay; VoIP wants under about 150 milliseconds one way. Jitter is the variation in de…
Network+ · Network Security
Port-based network access control stops a device from using a switch port or wireless SSID until it authenticates. The supplicant is the client software, the authenticator is the switch or a…
Network+ · Network Security
Common switch-level attacks have matching switch features. MAC flooding fills the CAM table so the switch floods frames like a hub; port security limits MAC addresses per port and shuts it d…
Network+ · Network Security
A site-to-site VPN joins two networks through gateway devices, usually IPsec, with no client software on end hosts. A client-to-site or remote access VPN connects an individual user, commonl…
Network+ · Network Security
A screened subnet, formerly called a DMZ, sits between the internet and the internal network and holds public-facing servers so a compromise there does not reach inside; firewalls filter on …
Network+ · Network Troubleshooting
Network+ uses an expanded methodology. One: identify the problem by gathering information, duplicating it, questioning users, identifying symptoms, determining what changed and approaching m…
Network+ · Network Troubleshooting
ping tests reachability and round-trip time with ICMP; failure to ping by name but success by address isolates DNS. traceroute (tracert on Windows) shows each layer 3 hop and where latency o…
Network+ · Network Troubleshooting
A cable tester checks continuity and pin-out, revealing opens, shorts, crossed pairs and split pairs. A certifier goes further and measures performance against category standards. A toner an…
Network+ · Network Troubleshooting
When one end of a link is set to full duplex and the other autonegotiates to half duplex, the half-duplex side detects collisions and late collisions while the full-duplex side reports CRC a…
Network+ · Network Troubleshooting
Slow wireless far from the access point is low signal strength, expressed as a more negative RSSI, forcing lower data rates; move the client, add an access point, or adjust antenna placement…
Network+ · Network Troubleshooting
A quick isolation ladder saves time. No link light means layer 1: cable, port, or speed mismatch. Link up but an APIPA address means DHCP is unreachable, often a VLAN or trunk issue at layer…
PenTest+ · Authorized penetration testing
A penetration test starts with explicit scope, permitted techniques, timing and stop conditions. These boundaries protect operations and make results interpretable. Demonstrate the impact ne…
PenTest+ · Security findings and communication
A useful security finding connects an affected asset, the observed weakness, the conditions for exploitation and the resulting impact. Include enough reproducible evidence to verify the conc…
PenTest+ · Web application security
Browser-side checks improve usability but can be bypassed. The server must validate input and authorize the requested operation on the specific object. Keep data separate from executable que…
Project+ · Project foundations
A project produces defined outputs within constraints, while benefits describe the value expected from using those outputs. Clarify scope, responsibilities and acceptance early. A delivered …
Project+ · Project monitoring and change
A proposed change can affect scope, schedule, cost, quality and risk together. Document the request and evaluate those effects before the authorized decision. Update approved plans and commu…
Project+ · Stakeholder engagement
Stakeholders have different interests, influence and information needs. Identify who is affected and who makes or supports each decision, then choose suitable engagement. Listen for concerns…
SecAI+ · AI security boundaries
This concept review develops the reasoning needed for ai security boundaries. Start by identifying the relevant assets, permissions, evidence and trust boundaries. Distinguish what the obser…
SecAI+ · Generative AI systems
A generative model produces output based on its learned patterns and the context it receives. Retrieval can supply relevant documents, but the model may still misunderstand or invent details…
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