Virtualization

Question 1

Host

Answer 1

This a physical computer and has a processor, memory, storage and networking components. The specialized software dynamically allocates resources

Question 2

Virtual machine escape

Answer 2

Occurs when a virtual machine and the host OS interact. Should never happen. It is essential that VM hosts are included in organization vulnerability and patch management

Question 3

virtualization spawl

Answer 3

occurs when the numbers of virtual systems is out of control- potentially unmanaged, unnecessarily and not in compliance with licensing agreements. Virtual devices should be treated the same as physical systems and subject to asset management, capacity and configuration management

Question 4

Containers

Answer 4

Are products of operating system virtualization, provide instances (lightweight virtual environment). OS containers are virtual environments that share the kernel of the host OS and provide user space isolation. Apps containers are virtual environments that she are the kernel of the host OS designed to package and run a single service

Question 5

Virtualization

Answer 5

Is technology that creates multiple environments from a single, physical hardware systems. Virtual instance behaves as if it were a physically separate system but is running on a shared physical host. . Benefit: resource virtualization is efficient use of hardware resources by allowing multiple virtual systems to run on 1 physical system.

Question 6

Flexible

Answer 6

Easy created , managed without additional hardware. It is scalable

Question 7

NSX network virtualization

Answer 7

Is the complete reproduction of physical network in software. Presents the logical networking devices and services (logical points,switches, routees,firewalls. Load balancers , VPN). Offer the same features and guarantees of physical network with the operational benefits and hardware independence of organization.

Question 8

Virtual machines

Answer 8

This is a guest server, VM acts exactly as through they are physical machines, each with independent OS. Apps, network connection,

Question 9

Hypervisor

Answer 9

Software or firmware components used to virtualize system resources on host system.
1 type, bare metal/native hypervisors, run directly on the system hardware. Direct access to hardware, no OS to load as the hypervisor is OS itself
2. Type hosted hypervisors runs a host operating system that provides virtualization services.
Type 1 is faster, more efficient but with greater hardware requirements and expenses

Question 10

VDI - virtual desktop infrastructure

Answer 10

Is a virtualization technology that hosts desktop OS on a centralized server in data center

Question 11

persistent VDI

Answer 11

Provides each user with his own desktop image, can be customized and saved for future use - like traditional desktop

Question 12

Non persistent VDI

Answer 12

Provides a pool of uniform desktops that users can access when needed. Non-persistent desktops revert to their original state, each time the users log out