Amazon DNS service is called?

Amazon DNS service is called?

• EC2
• S3 Bucket
• SES
• Route 53 

 

EXPLANATION

Amazon Route 53 is a highly available and scalable cloud Domain Name System (DNS) web service. It is designed to give developers and businesses an extremely reliable and cost effective way to route end users to Internet applications by translating names like www.example.com into the numeric IP addresses. 

SOURCE

https://aws.amazon.com/route53/
 

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In PowerShell, which of the following is a feature that you use to assign a set of commands (optionally with input parameters) to execute by a single name?

In PowerShell, which of the following is a feature that you use to assign a set of commands (optionally with input parameters) to execute by a single name?

• subroutine
• procedure
• function
• method 

 

EXPLANATION

In PowerShell, functions can act like miniature scripts within scripts which are executed by name, and they can be everything from a few commands, to full blown cmdlets written entirely in PowerShell (called Advanced Functions).
about_Functions on MSDN: https://msdn.microsoft.com/en-us/powershell/reference/4.0/microsoft.powershell.core/about/about_func...
about_Functions_Advanced on MSDN: https://msdn.microsoft.com/en-us/powershell/reference/4.0/microsoft.powershell.core/about/
Methods exist in PowerShell as well, as members of .NET objects: https://msdn.microsoft.com/en-us/powershell/reference/4.0/microsoft.powershell.core/about/about_meth...
Note: you can also access the above three directly in PowerShell with the commands:

Get-Help about_Functions
Get-Help about_Functions_Advanced
Get-Help about_Methods

Going beyond PowerShell, this is mostly a naming convention: the differences between the four names seem to vary from language to language.  While there are general technical definitions for each of the terms (for instance, "functions return a value; procedures do not"), these are not used universally among languages and programmers; as such, it's generally best to follow the naming convention common to the specific language.For more reading on the terms: http://softwareengineering.stackexchange.com/questions/20909/method-vs-function-vs-procedure

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In Windows, What does the "ping -a" command allow you to find out about an IP address?

In Windows, What does the "ping -a" command allow you to find out about an IP address?

• Router address of the host
• IP address of the host
• Resolve the host name
• Default gateway of the host 

 

EXPLANATION

In many cases, the "ping -a" command will return the host name if you know the IP address.
This is a good first step when attempting to identify the host.

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A hypervisor that runs directly on top of hardware (as opposed to on an OS) is known as:

A hypervisor that runs directly on top of hardware (as opposed to on an OS) is known as:

• Side saddle
• Hosted
• Bare metal
• Type 2 

 

EXPLANATION

A bare-metal (also known as native or type-1) hypervisor runs directly on the host's hardware to control the hardware and to manage guest operating systems. For this reason, they are sometimes called bare-metal hypervisors.
A guest operating system runs as a process on the host.

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Which benefit of being joined to a domain is not natively shared by Apple Macintosh computers?

Which benefit of being joined to a domain is not natively shared by Apple Macintosh computers?

• Group Policy
• Password Policy Enforcement
• Single Sign-On
• Windows Home Folders 

 

EXPLANATION

A domain-joined Mac workstation allows users to enjoy the following privileges:

• Kerberos authentication and delegation, including Single Sign-On to local, AD, and Open Directory resources
• AD password policy enforcement
• Support for AD user and group accounts
• Windows home folders

Of course, Mac computers do not have a Windows Registry and so therefore cannot be managed natively by Group Policy (the password policy issue previously mentioned is a notable exception).

SOURCE

https://4sysops.com/archives/how-to-join-a-mac-os-x-computer-to-active-directory/

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In Linux and Unix systems, what directory is most likely to contain system configuration data?

In Linux and Unix systems, what directory is most likely to contain system configuration data?

• /boot/
• ~/.config
• /usr/share/doc
• /etc/ 

 

EXPLANATION

As a rule, system configuration data should be kept in /etc/ http://tldp.org/LDP/Linux-Filesystem-Hierarchy/Linux-Filesystem-Hierarchy.pdf This can be quite useful knowledge when figuring out backup and recovery plans!

 

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You setup your server to accept PPTP VPN client connections. You accurately port forward TCP 1723 on the firewall to the server, but clients still cannot connect. Of the below options, what would be the most likely reason?

You setup your server to accept PPTP VPN client connections. You accurately port forward TCP 1723 on the firewall to the server, but clients still cannot connect. Of the below options, what would be the most likely reason?

• GRE not enabled or blocked on the firewall.
• Port forward of UDP 1723 missing.
• No static routes configured on the firewall.
• Port forward of UDP 500 missing.

EXPLANATION

GRE is an encapsulation protocol required by some PPTP VPN connections, notably Microsoft's implementation. Some cheaper and consumer level firewall/routers do not support or have an option for GRE, or if it does it might be disabled or blocked.
UDP 500 is specific to IPSEC.
Along with the citation, also see...
http://whp-aus1.cold.extweb.hp.com/pub/networking/software/ProCurve-SR-dl-GRE-Config-Guide.pdfhttp://www.cisco.com/c/en/us/support/docs/ip/generic-routing-encapsulation-gre/118361-technote-gre-0....
https://en.wikipedia.org/wiki/Generic_Routing_Encapsulation

SOURCE

https://blogs.technet.microsoft.com/rrasblog/2009/08/12/troubleshooting-common-vpn-related-errors/

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