1Directory
a centralized, hierarchical information repository about projects in an IT system
2Directory services
protocols, functions, and APIs that allow access to directory information
3Pruning and grafting
Moving objects to new locations in the directory, can move anything except the root
4Attributes
Variables with values that are relevant to items in that part of the directory, attributes can be inherited
5Schema
Defines the attribute types a directory can contain, defines the structure, holds the classes for the object that are created
6Leaf
An object that cannot contain other objects ( Person, computer, printer)
7Leaf object attributes
descirbe a leaf object and are defined in the directory schema
8Directory enabled application
Core applications that rely on the directory for information (User logon, VPN authentication, Digital signature, SSO verification)
9Organizational Units
Organizational containers, used to organize objects in AD
10Distinguish names
refer to individual entries
11Naming conventions
4 layers - c = Country, o = Organization, ou = Organization unit, cn = common name
12X.500
Father of all directories, introduced concept of tree, leaf attributes, DN, and RDN
13LDAP
standardized by the OSI and IETF, used for querying and modifying information in a directory
14Active directory
Windows directory service, uses LDAP, X.500 based, replaced NTDS, contains the objects tracked and managed by the network, central repository of networked device information
15eDirectory
Previously NDS, available in Navell Netware 4.0 and later, loosely based on X.500
16Open DIrectory
Used by apple, uses LDAP and Kerberos, can intergrate with AD
17Workgroup
no centralized mangement or control
18Domain
Collection of objects that share the same databse
19Active Directory Domain Serivces
Role to install AD, AD database
20Sites
the physical structure or topology of the network, a collection of well-connected subnets
21Replication
a change being made on one computer replicated across the directory
22Obejct
An instance of a class
23Group policy objects
configured settings that are applyed to one or more objects by lnking to an organizational unit
24Forest
A singles instance of active directory, can have one or more domains that share the same schema
25Schema master
The DC that is allowed to make changes to the schema, one in entire forest
26Domain Naming master
The DC responsible for the forest-wide namesspace must be on the DC that is alos a global catalog server
27PDC emulator
used for backward compatibility with windows NT DCs and for propogating password changes quickly across all DCs in the domain
28SID
Security ID, same up to the alst 32 bits
29RID (Relative ID) Master
Responsible for making sure that SIDs are unique within the domain, make sure last 32 bits are different
30Infrastructure master
maintains references to objects located in another domain
31AD Users
created within a specific domain and can authenticate against any DC within that domain
32Domain local group
intended to be used only in within the domain it was created in, can contain universal groups from any domain and domain local groups from the same location
33Global group
Default scope, can only be sued by computers within the domain and by members of other domains in the forest
34Universal group
Stored on DCs that are configued as global catalogs, replicated across the entire forest, can be used by any domains in the forest, and can contain members from any domain in the forest
35Windows profiles
an envirometn created specifically for a user, created for all new users by copying and modifying a default profile
36Local profile
basic type, accts on a stand laone computer have a local proflie, user can modify any data in the profile
37Mandatory profile
A read only profile assigned to an account, ensures user profile is always the same, used for accoutns associated with specific tasks
38Roaming profiles
The users profiles is stored on a network share, allows for the user to always have a consistent enviroment as changes are always available
39Folder redirection
seperate uer data from profile data
40Name resolution
Converts between human names and network addresses
41Forward resolution
goes from names to addresses
42reverse resolution
goes from addresses to names
43NetBIOS names
used in Microsoft file and print sharing
44DNS names
used for internet protocols and hosts, also used in AD
45Hostname
name of a computer in human readable characters
46Namespace
name of adomain, not specifcally an AD domain, logical set of hosts signified by a name controlled by a set of name servers
47Fully qualified domain name
hostname + namespace
48HOSTS File
text file that helps a computer know static maps of hostnames to IP addresses
49Name Server
DNS server that resolves FQDNs to IP addresses
50DNS Name Space Structure
hostname.subdomain.top_level_domain, authority hneded down from top level to lower levels
51NETBIOS
Legacy - still part of newer windows OS, used in the SMB server protocol
52DNS
defines a hierarchical naming structure, supports IP and IPX addresses
53DNS caching
DNS server saves the result of each DNS query
54Dynamic DNS
Allows DNS to register their hostnames in an assigned namespace
55Service Records
Key to workstations and servers finding domain controllers, Service name, server FQDN, port, prioriry, weight
56Service name
standard value typically preceded by an uderscore, equivalent to the hostname
57Server FQDN
server that provides ther service
58Port
the TCP or UDP port on which the service is available
59Priority
number one priority
60weight
tie breaker for priority
61_gc, global catalog
The LDAP service to look up data within the global catalog
62_kerberos
THe authentication process
63_kpassword
Another part of the authentication process
64_ldap
the LDAP service to look up data within the domain
65System Virtualization
the process of emulating hardware so it can be made availabel to multiple logical systems
66Client based architecture
virtualization layer installed on top of an existing OS as an aplication
67Bare-Metal Architecture
Virtualization layer isntalled directly on the hardware
68Virtual Machine
Each enviroment available for OS isntallation
69Guest OS
The OS installed on the VM
70Host OS
In a hosted architecture, the OS in which the virtualization software runs
71Hypervisor
THe software that provides the virtualization layer in a bare-metal architecture
72Full Virtualization
uses binary translation to execute instructions, offers the est isolation and most security between VMs but is very complex
73Paravirtualization
uses a modified guest OS to remove non-virtualizable instruction
74Hardware assisted
Hypervisor traps non-virtualizable isntructions and re-issues them to hardware in root mode, whish is a function of CPU enhancements
75Memory virtualization
uses virtual to physical mappings maintained by the hypervisor
76Device and I/O virtualization
involves managing the routing of I/O requests between virtual devices and the shared physical hardware
77ESX Server
extensions to the linux kernal that include functionality of script execution, 3rd party hardware monitoring and low level backup
78ESXi Server
same functionallity as ESX server, uses special vm for console functionality, can be embedded or installable
79virtual networking
in a virtualized enviroment, network access is virtualized as well
80vSwitches
segregated into port groups, each has a seperate 802.1Q VLAN
81Kernel port groups
used by the hypervisor needed for management, vmotion, san storage
82VM port groups
Used by VMs for connectivity
83identity source
a repository for users and groups that vcenter sso can use for authentication
84Default domain
used by vcenter sso to authenitcate users when the user logs on without a domain name
85VMSF-6.5
allows concurrent access to shared storage, can be dynamically expanded, uses a 1MB block size, uses subblock addressing, provides on-disk block-level blocking
86Migration
moving a VM from one host or datastore to another host or datastore
87cold migration
migrate a powered off VM
88suspended migration
migrate a VM that is suspended
89vSphere vMotion
migrate a Vm that is powered on
90vSphere Storage vMotion
Migrate a VMs files while the VM is powered on to another datastore
91High Availability
a systm this continuosly opertion for an optimal length of time
92vSphere Fault Tolerance
part of HA, designed so that a backup VM can immediately take over with no loss of service when an outage occurs
93Block devices
physical device (hard drive)
94File containers
Logical device (formatted partition)
95Cluster
smallest unit of data that the file system will read or write
96File system
a hierarchy of files and their respective directories
97Disk partitioning
Each disk is brok into one or more partitions, each holds one file system, no dynamic way to combine or resize file systems on physical partitions
98Volumes and slices
block device are divided or aggregated into volumes or slices, can be resized as required
99Partitions
a collection of consecutive sectors in a volume, also a volume
100Journal file system
logs intended changes to a journal before they are made, used to replay changes if a crash occurs
101Basic disk
contain basic volumes
102Basic volumes
primary partitions, extended partitions, and logical drives
103Dynamic Disks
Contain dynaic volumes
104Dynamic volumes
5 types, simple, spanned, striped, mirrored, RAID-5
105Simple
uses free space from a single disk
106Spanned
Uses free space sequentially across multiple disks
107Striped
Uses free space hat is interleaved through multiple disks
108Mirrored
Uses free space on disk that is duplicated on a second disk (RAID 1)
109RAID-5
Uses free space across three or more disks and uses one for parity or fault tolerance
110Master Boot Record
Where the system boots from in Intel x86 systems, stored in the boot sector, tells the system where to find the active bootable partition
111ATA
uses 40-pin ribbon cable to connect hard drives
112SATA
provides more bandwidth, higher speed and smaller footprint than ATA
113SCSI
used in high performacne systems and RAID arrays
114Drive
Physical torage mechanism
115Disk controller
controls read/write from/to drives, all transactions are originated by the controller
116RAID
Can be used to aggregate multiple devices into a single, fault tolerant, higher perfoming storage device
117RAID
redundant array of inexpensive disks, used to create a single logical disk from multiple physical disks
118Hardware RAID
RAID operations are manged by the attachment controller, looks like a single large drive to a the computer
119Software RAID
operations are manged by the OS, can limit RAID types
120RAID 0 (striping)
Data is distributed across multiple disks, increased performance, no redundancy
121RAID 1 (mirroring)
Data is duplicated acorss multiple disks, no increased perfomrance
122RAID 5 (Striped with parity)
Dat ais striped across multiple disks, parity is kept for each set of stripes, increased performance, provides some redundancy
123RAID 10/1+0 (Mirrored Stripes)
Stripes data across multiple disks wich are then mirrored, increased performance, fault tolerant
124Network atached storage
File level storage that is avaialable over the network, already partioned and formatted
125Storage Area Netwokes
Block level storage accessible over a networkm, uses dedicated hardware to interconnect the storage arrays (iSCSI)
126iSCSI
Internet Small Computer Systems Interface, SCSI command protocol over TCP/IP
127Initiator
Device that originates a session to a storage device
128Target
The storage device to which an initiator connects
129LUN
A logical device/partition presented over the network
130Network fabric
the interconnection between nodes
131iQN
iSCSI Qualified name, iqn.yyyy.mm
132Eui
extended Unique Identifier, eui.{EUI-64 bit address}
133Backup
Making copies of data that can be used to restore in the event of a data loss event
134Full Backups
Back up all files every time, disregards the archive bit setting
135Differenctial Backups
Back up files that have been changed or added since the last Full backup, Level 1 backup
136Incremental Backups
BAck up files that have changed or been added since last backup of any kind
137Custom backups
Enables you to configure backups differently for each
138Subnets
used to determine relative location of an item in the directory
139Sites
Reflects one or more interconnected subnets
140DFS Namespace
A central network file sharing hierarchy
141Namespace server
Server that contains the namespace root
142Target
A network share located on a server that is part of the namespace
143Referral
The process of pointing a client to a target
144DFS Folder
A folder within the namespace, virtual or a referral to an actual target
145Scripts
Sequence of instructions telling a program to do something
146Scripting languages
Programming languages wuth limit functionality
147System image
Standardized client software installations
148WSUS
Microsoft powered tool to automate windows updates
149Software/Hardware audits
can assist in buidling and maintaining a hardware database
150Proprietary Licensing
A license is granted for use of a copy of software but ownership of the copy remains with the publisher
151time-based licensing
software rental, perpetual or annual
152Deployment based licensing
licensing based on how software is deployed
153stand alone licensing
Software that runs on an individual machine rather than in a clinet/server enviroment
154Per-Connection licenses
Enforced on the server and governs the number of concurrent connetions to that particular server
155Client Access Licenses
Enforced on the client and governs how a client can access a server based resource
156Volume licensing
Alows a single license key to validate multiple software copies
157Open source licensing
License granted for use of a copy of software and ownership of the copy transfers to the end user
158Direct Printing model
application printed directly to the printer
159Modern printing model
uses a print server to manage communications between clients and printers
160LPR
traditional printer protocol for a delivery access network
161RAW
default networking printing protocol in modern windows systems
162CUPS
de facto printing protcol in UNIX systems to enable print server functionality
163PDL
A programming language used to describe the print job to the printer
164PCL
Printer command language, simple efficient lightweight, de facto standard for inkjet printing
165Postcript
developed for laser printer and licensed to adobe
166SCCM
System Center Configuration Manager
167BITS
Background Intelligent Service, transfers files between a client and a server and provides progress infprmation related to the transfers
168BrancheCache
WAN bandwidth optimization technology
169Application Virtualization
Allows apps to be encapsulated from the underlying OS
170SaaS (Software as a sService
Software hosted by a provider designed to run in a web browser
171PaaS (Platform as a Service)
Delivers a development enviroment to app developers as a service over the cloud
172IaaS (Infrastructure as a Service)
Allows the custoemr to provision resources on an as needed basis
173Public cloud
Clients and service providers are seperate entities
174Private Cloud
Infrastructure is owned and operated solely for a single organization
175Community Cloud
Shared by multiple organizations all supporting a single commnity with shared concerns
176Hybrid Cloud
Any combination of clouds that remain unique entities but are bound together through the sue of technology that enables data and applicaiton portability