K2.3 The elements of infrastructure and associated technologies:
• network devices:
o firewalls (for example next generation firewall (NGFW)/unified threat management (UTM)
appliances)
o routers
o switches
o hubs
o bridges
o wireless/WiFi access points (APs)
o wireless range extenders
o modems
o media converters
• end user devices (EUDs):
o desktops and laptops
o mobile devices (for example smartphone, tablet)
o smart devices (for example wearable technology, smart speakers)
• storage devices and systems:
o hard disk drive (HDD)
o solid state drive (SSD)
o removable media (for example USB flash drive, external hard drive)
o network-attached storage (NAS)
o storage area network (SAN)
o block storage
o object storage
o redundant array of independent disks (RAID):
▪ RAID 0 – striping
▪ RAID 1 – mirroring
▪ RAID 5 – parity across drives
▪ RAID 10 – mirroring and striping
• wired and wireless technologies:
o unshielded twisted pair (UTP) cable:
▪ straight-through
▪ crossover
▪ EIA/TIA-568A layout
▪ EIA/TIA-568B layout
o RJ11 connectors
o 8P8C/RJ45 connectors
o copper cables (for example cat 5e, cat6)
o fibre-optic cables
o the point-to-point protocol (PPP)
o SDN
o WiFi protected access (WPA) 1, 2, and 3
• antennas:
o omni-directional
o directional
o patch
o yagi
o dipole
• cloud services:
o IaaS
o PaaS
o SaaS
o cloud storage
• test equipment:
o test plan
o testing kit:
▪ tone generator and probe
▪ cable tester
▪ tracing kit
• support scripting (for example automation and administration)
• network monitoring and logging
• capacity management (for example monitoring server load)
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