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NEW QUESTION: 1
A. Option C
B. Option A
C. Option B
D. Option D
Answer: D
Explanation:
Detroit and New York users have direct connection to the internet but not Chicago users.
It appears that via a Send Connector Chicago email is sent to New York mail server.
Given this then the spf txt record listing the New York mail server is correct (131.107.1.200)
and there should not be any issues with the Chicago email
Once the planned changes have been implemented then the DNS txt record would have to
accommodate the Detroit Mail server (EX3) (131.107.2.200) in order for the email to
function correctly for Detroit users.
However the question relates to Chicago users not Detroit users.
CNAME record
A Canonical Name or CNAME record is a type of DNS record that links an alias name to another canonical domain name. You'll need to configure CNAME records if you want to use URL forwarding to create a custom web address, forward a URL to Google Sites, or forward a naked domain URL, as well as verify your site with your domain name provider. Lastly, you may need to use CNAME records to reset the administrator password if you can't access the Google Apps control panel because you've forgotten the administrator password. Your CNAME records are stored in the DNS Zone File as pairs of key values. The value of a CNAME record is always a domain name. CNAME records are often used to create subdomains. CNAME records are useful because they allow you to set up an alias to a server without using its IP address, through an intermediary standard domain name.
MX Record MX records are DNS settings associated with your domain that direct its mail to the servers hosting your users' mail accounts. These settings are managed by your domain host, not by Google. To make sure mail always gets delivered, you typically create records for multiple servers, all of which can deliver mail to users. That way, if one server is down, mail can be routed to another server, instead. You determine which servers get tried first by assigning priorities, using values like 10, 20, 30, and so on. The lowest value gets highest priority.
PTR Record A DNS PTR record - for those of you who are wondering - is a special entry in the Domain Name System (DNS) that basically maps an IP address (like 65.55.12.249) to a domain name (like wwwco2vip.microsoft.com). Having a DNS PTR record for your IP address is (somewhat) a sign of reliability in the Internet, since only the owner of a specific network zone has the ability to create and edit these DNS records. Today, most mail exchangers will check this record for each incoming connection and may abort the communication if they find your IP address does not have an associated DNS PTR entry: because of this reason, always suggest to make sure your public servers IP addresses have DNS PTR records configured properly. While EmailVerify.NET can validate email addresses even without a DNS PTR entry configured, the quality of the validation results in this event may be suboptimal.
TXT Record A TXT record is an entry within the Domain Name System (DNS) that provides supplemental information about your domain.
A TXT (text) record is used to hold some text information. You can put virtually any free text
you want within a TXT record.
A TXT record has a hostname so that you can assign the free text to a particular
hostname/zone.
The most common use for TXT records is to store SPF (sender policy framework) records
and to prevent emails being faked to appear to have been sent from you.
The name field of the SPF record should be left blank unless mail is sent from a subdomain
such as [email protected]. If this was the case "mail" would be entered in
the name field of the record.
Alternatively, of email is sent from [email protected], the name field is left blank.
The data field of the record is populated with the list of hosts that are permitted to send
email for the domain in SPF record format.
There are wizards which can assist in generating an SPF record available. The data field of
the record must be enclosed in quotations so servers will read the value as a single string.
Below is a default SPF record for example-1.com.
NOT A Today, most mail exchangers will check this record for each incoming connection and may abort the communication if they find your IP address does not have an associated DNS PTR entry: Need a ptr record.
NOT B Today, most mail exchangers will check this record for each incoming connection and may
abort the communication if they find your IP address does not have an associated DNS
PTR entry:
Need a ptr record.
NOT C
Need to modify the txt record for Detroit email users but not apparently for chicago email
users.
D
Today, most mail exchangers will check this record for each incoming connection and may
abort the communication if they find your IP address does not have an associated DNS
PTR entry:
Need a ptr record.
Managing DNS Records
NEW QUESTION: 2
A network engineer is configuring a routed interface to forward broadcasts of UDP 69, 53, and 49 to
172.20.14.225. Which command should be applied to the configuration to allow this?
A. router(config-if)#ip helper-address 172.20.14.225
B. router(config-if)#udp helper-address 172.20.14.225
C. router(config-if)#ip udp helper-address 172.20.14.225
D. router(config-if)#ip helper-address 172.20.14.225 69 53 49
Answer: A
Explanation:
Explanation/Reference:
Explanation:
To let a router forward broadcast packet the command ip helper-address can be used. The broadcasts will be forwarded to the unicast address which is specified with the ip helper command.
ip helper-address {ip address}
When configuring the ip helper-address command, the following broadcast packets will be forwarded by the router by default:
TFTP - UDP port 69
Domain Name System (DNS) - UDP port 53
Time service - port 37
NetBIOS Name Server - port 137
NetBIOS Datagram Server - port 138
Bootstrap Protocol (BOOTP) - port 67
TACACS - UDP port 49
NEW QUESTION: 3
You create a User Profile Synchronization connection.
You need to grant the necessary permissions to the synchronization account.
What should you do?
A. Grant the account Full Control on the ActiveUsers OU.
B. Grant the account Full Control on the AuthenticatedUsers AD security group.
C. Grant the account Read permission on the domain.
D. Grant the account the Replicate Directory Changes permission on the domain.
Answer: D