Software-Defined Data Center
6 important questions on Software-Defined Data Center
ESXi has the following availability and features:
- Available for purchase with vSphere 5.5 or as a a free version that can
be downloaded
- High security
+ Memory hardening
+ Kernel module integrity
+ Trusted platform module
- Small disk footprint "(about 144MB)"
- Installable on hard disks, SAN LUNs, USB devices, SD cards, or diskless hosts " (directly into memory) with a feature called VMware vSphere® Auto DeployTM."
An ESXi host can be accessed through several interfaces, including:
•The vSphere Client (connected directly to the host or to vCenter Server)
•VMware vSphere® Command-Line Interface (vCLI)
•The VMware vSphere® API and VMware vSphere® Management SDK
•Common Information Model (CIM)
CIM is a management standard that is promoted by the Distributed Management Task Force. Much of the information that you can find through the CIM interface is also available through the vSphere API. But some information can be found only through CIM, including the health status of the hardware hosting ESXi.
The DCUI allows you to modify network settings:
- Host name
- IP configuration (IP address, subnet mask, default gateway)
- DNS servers
- You can also modify the network adapter used for the management network, configure VLAN settings
- use an IPv6 configuration
- and set custom DNS suffixes
- restart the management network (without having to reboot the system),
- test the management network (using ping requests),
- and disable a management network
- Higher grades + faster learning
- Never study anything twice
- 100% sure, 100% understanding
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Network Time Protocol (NTP) is a client-server protocol used to synchronize a computers clock to a time reference.
NTP is important:
- For accurate performance graphs
- For accurate time stamps in log messages
- So that virtual machines have a source to synchronize with
An ESXi host can be configured as an NTP client.
- It can synchronize time with an NTP server on the Internet or your corporate NTP server.
- ESXi 5 hosts support NTP versions 3 and 4
Network Settings: DNS and Routing - link allows you to change:
• The host name and domain
• The primary and secondary DNS servers
• The search domain
• The VMkernel default gateway
Remote Access Settings: Security Profile
On ESXi hosts:
- Remote clients are prevented from accessing services on the host.
- Local clients are prevented from accessing services on remote hosts. Unless configured otherwise, daemons will start and stop with the ESXi
host: For example, DCUI or NTP server
- An ESXi host includes a firewall as part of the default install.
The question on the page originate from the summary of the following study material:
- A unique study and practice tool
- Never study anything twice again
- Get the grades you hope for
- 100% sure, 100% understanding
