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5.5.10 Practice Question

Ula Green avatar Ula Green
9 September 2022
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question
You need to enable hosts on your network to find the IP address of logical names such as srv1.myserver.com Which device would you use?
answer
DNS server
Explanation: A device that would enable hosts on a network to find the IP address of logical names such as srv1.myserver.com is called a Domain Name System (DNS) server. DNS servers maintain a directory of domain names and translate them to IP addresses. This allows users to access websites by typing in the domain name instead of the IP address.
question
You want to implement a protocol on your network that allows computers to find the IP address of a host from a logical name. Which protocol should you implement?
answer
DNS
question
Listed below are several DNS record types. Match the record the on the left with its function on the right.
answer
Points a hostname to an IPv4 A Provides alternate names to hosts that already have a host record. CNAME Points an IP address to a hostname PTR Points a hostname to an IPv6 address AAAA identifies servers that can be used to deliver mail. MX
Explanation: A recordCNAME recordMX recordNS recordPTR recordThe A record is the record type used to map a hostname to a numeric IP address. The CNAME record is the record type used to map an alias to a canonical name. The MX record is the record type used to specify a mail server for a domain. The NS record is the record type used to specify a name server for a domain. The PTR record is the record type used to map a numeric IP address to a hostname.
question
Listed below are several DNS record types. Match the record type on the left with its function on the right.
answer
Identify a domain controller- SRV identify a mail server- MX Map a host name to an IPv4 address- A Map an IPv4 address to a host name- PTR
Explanation: A. Name serverB. AliasC. HostD. Mail serverE. TextF. Canonical nameG. Pointer1. Associates an IP address with a domain name2. Points to another DNS name3. Indicates where email for a domain should be delivered4. Specifies authoritative DNS servers for a domain5. Stores text-based information1. C. Host2. B. Alias3. D. Mail server4. A. Name server5. E. Text
question
which of the following services automatically creates and deletes host records wen an ip address lease is created or released?
answer
DYNAMIC DNS
question
If dynamic DNS is being used, which of the following events will cause a dynamic update of the host records?
answer
The DHCP server renews an ip address lease The ipconfig/release command is entered on a workstation.
Explanation: If dynamic DNS is being used, the following events will cause a dynamic update of the host records:-The DHCP server is restarted-A new DHCP lease is assigned-The DHCP lease is renewed-The DHCP lease is released