MS-102 Cert Study

Question 1

Contoso wants to prevent other people from using its domain to send spam or other malicious email. Which external Exchange Online DNS record should Contoso create to prevent spoofing and phishing?

SRV
Host (A)
or SPF?

Answer 1

SPF

Question 2

As the Microsoft 365 Administrator for Contoso, you manage the company’s Microsoft 365 tenant. You must add a DNS record for Exchange Online that’s used by Outlook clients to locate the Autodiscover service in Microsoft 365. Which DNS record type should you create?

CNAME
MX
or TXT?

Answer 2

CNAME

Question 3

Fabrikam has a Microsoft 365 Business Premium subscription. The company recently purchased a new subsidiary that it renamed Fabrikam Residences. As Fabrikam’s Microsoft 365 Administrator, you want to add a custom domain titled fabrikamresidences.com for the new subsidiary. You also want to register a subdomain titled content.fabrikamresidences.com that’s under the fabrikamresidences.com root domain. What should you do to add these two domains to your Microsoft 365 Business Premium subscription?

Answer 3

Register the ROOT domain first and then register the subdomain

What is a root domain? imagine befulfilledsystems.com and then the subdomain would be sales.befulfilledsystems.com

Question 4

How many domains are you limited to register in your organization?

Answer 4

up to 900 with M365

Question 5

If you want to use M365 for email services you must setup what?

Answer 5

MX Record (Mail Exchanger)

You must publish these MX records in the publicly available DNS zone to ensure proper email delivery.

IMPORTANT: While the DNS zone must be publicly available, you can still implement security measures, such as Domain Name System Security Extensions (DNSSEC) and access controls, to protect the integrity and confidentiality of your DNS records and domain

Question 6

What is DNSSEC?

Answer 6

Donmain Name System Security Extensions

you can implement security measures, such as Domain Name System Security Extensions (DNSSEC) and access controls, to protect the integrity and confidentiality of your DNS records and domain

Question 7

What is the limitation of how many domains can you register in M365?

Answer 7

900

Question 8

What is a TXT DNS Record?

Answer 8

Used by Microsoft 365 to verify that you own your domain. It doesn’t affect anything else.

Question 9

What is a CNAME
(Suite) ?

Answer 9

Consider an example root domain techtarget.com. With a CNAME record, a user accessing www.techtarget.com is referred to the CNAME techtarget.com.

A canonical name (CNAME) is a type of Domain Name System (DNS) database record that indicates that a domain name is the nickname or alias for another domain name. Also referred to as the “true name,” the CNAME is especially important when multiple services run from a single IP address.

The CNAME is commonly used instead of an A record, which is a type of DNS record that shows the IP address of a domain. CNAME records must point to a domain and not an IP address. A domain with a CNAME record can either point to another domain with a CNAME record or to a domain with an A record.

Question 10

What connects Outlook to Exchange Server?

Answer 10

Autodiscover

Question 11

The process for an Outlook client to connect to Exchange Online for the first time includes the following steps:

Answer 11

1. An Outlook user enters their email address and password.
2. Based on the email address information and Autodiscover record on the Internet-located DNS, the client locates the Autodiscover service in Microsoft 365.
3. The client provides its SMTP address and password to authenticate with the Autodiscover service in Microsoft 365.
4. The client then asks for the appropriate connection settings.
5. Microsoft 365 provides the connection settings in an XML configuration information format.

6.Outlook downloads the information and applies it to its connection settings.

7. Outlook connects to Exchange Online in Microsoft 365.

Question 12

For an organization to use Autodiscover in this manner, it must first configure the appropriate

Answer 12

DNS records on the publicly available DNS servers on the Internet.

Check here: https://learn.microsoft.com/en-us/training/modules/configure-client-connectivity-microsoft-365/3-explore-dns-records-required-client-configuration

Question 13

For Autodiscover to work properly, you must configure

Answer 13

the appropriate DNS records during the Microsoft 365 tenant setup.

Question 14

What does MAPI stand for? (Outlook configuration)

Answer 14

Messaging Application Programming Interface - MAPI over HTTP is the most secure and enhanced performance compared to pop3 and imap.

Question 15

What 2 Troubleshooting website/applications are there for Microsoft?

Answer 15

Microsoft Remote Connectivity Analyzer and SARA

Question 16

Which of the following DNS record types must be created so that Outlook clients can use the Autodiscover process to connect to Exchange Online? TXT, MX, or CNAME?

Answer 16

CNAME