z
Z Shell (zsh)  Released December 14, 1990.  Wikipedia         
zap the PRAM Term used to refer to the process of resetting a Mac's PRAM with the keys Command, Option, P, and R during startup.   Apple Support  TechTerms.com       
Zen Microarchitecture codename from AMD. First processors released under the Ryzen CPU March 2, 2017.  Wikipedia         
ZenFone 3 Smartphone made by ASUS. Announced at Computex on May 30, 2016.  Website  Wikipedia       
ZenFone 4
| Display: | 
  | 
| CPU: | 
  | 
| Memory: | 4 GB/6 GB LPDDR3 RAM | 
| Storage: | 
  | 
| Camera: | 
  | 
| Battery: | 3300mAh | 
| Dimensions: | H: 155.36 mm W: 75.24 mm D: 7.49 mm | 
| Weight: | 165 g | 
| Ports: | 
  | 
| MSRP: | $399 | 
ZenFone 4 Pro
| Display: | 
  | 
| CPU: | Qualcomm Snapdragon 835 | 
| GPU: | Adreno 530 | 
| Memory: | 6 GB LPDDR3 RAM | 
| Storage: | 
  | 
| Camera: | 
  | 
| Battery: | 3600 mAh | 
| Dimensions: | H: 156.9 mm W: 75.6 mm D: 7.6 mm | 
| Weight: | 175 g | 
| Ports: | 
  | 
| MSRP: | $599 | 
Zero Insertion Force (ZIF) Type of integrated circuit socket that requires little to no effort to install and is held in with a lever or slider.   Wikipedia         
zero-day attack When   Wikipedia         
Zero-Day Package (ZDP)    TechNet         
zero-hour attack Same concept as zero-day attack, only with less time to exploit.   Wikipedia         
ZeroAccess Trojan horse that connects to a botnet.   Wikipedia         
zettabyte (ZB) 1021. 1000 petabytes.   Wikipedia         
Zeus Trojan horse. First identified July 2007.  Wikipedia         
ZFS    Wikipedia         
Zoiper Free VoIP softphone   Website         
zone file Text file containing DNS records for a domain name.            
Zone-Based Firewall (ZBF)  Introduced by Cisco in 2006.  Cisco         
Zone-Based Policy Firewall (ZPF)    Cisco         
Zune Music player made by Microsoft. First released November 14, 2006.  Wikipedia