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CompTIA Network+ > Cloud and the Datacenter > Flashcards

Cloud and the Datacenter Flashcards

1
Q

Virtual Servers

A

Allows multiple virtual instances to exist on a single physical server
cheaper, consolidate physical servers
Multiple NICs increase bandwidth

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2
Q

Hypervisor

A

Specialized software that emulates physical hardware

VMWare, Microsoft Hyper-V, Virtual Box

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3
Q

Virtualized Storage Solutions

A

(NAS) - Network Attached Storage: disk storage over TCP/IP

(SAN) - Storage Area Network: Specialized LAN designed for data transfer

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4
Q

storage area network (san) connection types

A

Fibre Channel
Fibre Channel over Ethernet (FCoE)
iSCSI (IP Small Computer System Interface)

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5
Q

Virtual Switches

A

Overcomes the problem of all virtual servers being on one broadcast domain
Layer 2 control provides VLANs and trunking

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6
Q

Virtual Desktop and pros?

A

User’s desktop computer is run in browser

Easier to secure and upgrade for the admins

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7
Q

Private Cloud

A

Systems and users only have access with other devices inside the
same private cloud or system
ex: government cloud

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8
Q

Public Cloud

A

Systems and users interact with devices on public networks, such
as the Internet and other clouds
ex: google drive

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9
Q

Hybrid Cloud

A

Combination of private and public

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10
Q

Community Cloud

A

Collaborative effort where infrastructure is shared between
several organizations from a specific community with common
concerns
ex: infrastructure shared by different organizations

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11
Q

(IaaS)

A

Infrastructure as a Service
Allows outsourcing of the infrastructure of the servers or desktops to a
service provider
Hosted off-site at the service provider’s data center and the customer is
billed for usage
AWS, Azure

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12
Q

(SaaS)

A

Software as a Service
User interacts with a web-based application
Details of how it works are hidden from users
google docs, office 365

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13
Q

(PaaS)

A

Platform as a Service
Provides a development platform for companies that are developing
applications without the need for infrastructure
OpenShift, Apprenda

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14
Q

(DaaS)

A

Desktop as a Service
Provides a desktop environment that is accessible through the Internet in
the form of a cloud desktop or virtual desktop environment
Virtual Desktop Infrastructure (VDI)

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15
Q

Elasticity

A

match the resources allocated with the actual amount of
resources needed at any given point in time
meeting the sudden increases and decreases
in the workload
dynamic, Short-term addition or subtraction of resources

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16
Q

Scalability

A

Handles the growing workload required to maintain good performance
and efficiency for a given software or application
Long-term planning and adoption

17
Q

Vertical Scaling

A

(Scaling Up)
Increasing the power of the existing resources in the working
environment

18
Q

Horizontal Scaling

A

(Scaling Out)
Elasticity
Adding additional resources to help handle the extra load
more redundancy and less downtime

19
Q

Multitenancy

A

Allowing customers to share computing resources in a public or private
cloud
Better storage/access, resources, cost
More security risk

20
Q

Virtual Machine (VM) Escape

A

Occurs when an attacker breaks out of one of the isolated VMs and
begins to directly interact with the underlying hypervisor

21
Q

(IAC)

A

Infrastructure as Code
Enables managing and provisioning of infrastructure through code instead of
through manual processes
Scripted automation and orchestration

22
Q

Automation/Orchestration

A

Process of coordinating the installation and
configuration of multiple systems
Lower costs, Speed up deployments, Increase security

23
Q

Snowflake Systems

A

Any system that is different from the standard configuration template used with IAC

24
Q

(VPN)

A

Virtual Private Network
cloud connection option
cheaper than private-direct
aws, azure

25
Q

Private-Direct Connection

A

Extends preexisting, on-premise data center into the provider’s network
to directly connect to your virtual private cloud network
faster, better performance, better redundancy

26
Q

data center

A

facility that organizes, processes, stores and disseminates amounts of data

27
Q

Three-tiered hierarchy

A

core: fastest, backbone, redundant
distribution/aggregation layer: policies, layer 3 switches
access/edge: connect to end points

28
Q

sdn

A 
software-defined networking
admins can control networks via software
1. application layer
2. control layer
3. infrastructure layer
4. management plane
29
Q

spine and leaf

A

spine: switches that create full mesh with leaves
leaf: access switches
increased speed, decreased latency compared to 3-tiered

30
Q

traffic flow

A

north-south: exit-entering data center

east-west: data flow within data center

31
Q

on premise

A

traditional, usually inside building

32
Q

co-located

A

rent space in data center

33
Q

cloud based

A

migrate data to csp facilities

CompTIA Network+ (22 decks)

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