Install and Configure DHCP and DNS
Servers Review
Users on a network are complaining that they cannot connect to a Webserver by its name in the Web
browser. You can access the Webserver using its IP address. You discover an access list is blocking several
UDP ports. Which port should you remove from the access list to allow users to connect to the
Webserver? - correct answer ✔✔The Domain Name System (DNS) is a hierarchical decentralized naming
system for computers services and other resources connected to the Internet. It is used to associate
various information with domain names. More specifically, it is used to translate IP addresses to human-
friendly domain names. DNS uses UDP port 53.
What method of IP network configuration would you use for devices such as servers and printers so that
all users on a network will always be able to reach these resources using the same network address? -
correct answer ✔✔When provisioning network equipment that will be accessed by many users over the
network, it is always good practice to statically assign IP address and connectivity parameters to make
certain that their IP addresses on the network will remain the same. This is also advisable to provide
availability of these resources in the event IP address allocation services such as DHCP fail.
DNS clients can use this zone to obtain information such as IP address that correspond to DNS domain
names or services. What type of DNS zone is this? - correct answer ✔✔A forward lookup zone is the
most common type of zone. DNS clients can use this zone to obtain such information as IP addresses that
correspond to DNS domain names or services that are stored in the zone. This zone essentially performs
the primary function of the DNS service. NS and SOA records are automatically created.
Which of the following describes the configuring of MAC reservation in a DHCP server? - correct answer
✔✔MAC reservation is a method of implementing DHCP such that a DHCP server will always give a
preassigned IP address to the same host. In other words, the DHCP server assigns a specific IP address
based on the MAC address of the client. This is also known as DHCP reservation or static DHCP.
You have configured a DHCP pool to allocate the IP addresses to the system for 3 days. What have you
defined? - correct answer ✔✔An IP address that is allocated to a DHCP client includes the parameter of
Lease Time. This is the period that the client can use the IP address. When this time is over, the client is
required to either release the address or send a new DHCP request for a renewal of the address lease.
Servers Review
Users on a network are complaining that they cannot connect to a Webserver by its name in the Web
browser. You can access the Webserver using its IP address. You discover an access list is blocking several
UDP ports. Which port should you remove from the access list to allow users to connect to the
Webserver? - correct answer ✔✔The Domain Name System (DNS) is a hierarchical decentralized naming
system for computers services and other resources connected to the Internet. It is used to associate
various information with domain names. More specifically, it is used to translate IP addresses to human-
friendly domain names. DNS uses UDP port 53.
What method of IP network configuration would you use for devices such as servers and printers so that
all users on a network will always be able to reach these resources using the same network address? -
correct answer ✔✔When provisioning network equipment that will be accessed by many users over the
network, it is always good practice to statically assign IP address and connectivity parameters to make
certain that their IP addresses on the network will remain the same. This is also advisable to provide
availability of these resources in the event IP address allocation services such as DHCP fail.
DNS clients can use this zone to obtain information such as IP address that correspond to DNS domain
names or services. What type of DNS zone is this? - correct answer ✔✔A forward lookup zone is the
most common type of zone. DNS clients can use this zone to obtain such information as IP addresses that
correspond to DNS domain names or services that are stored in the zone. This zone essentially performs
the primary function of the DNS service. NS and SOA records are automatically created.
Which of the following describes the configuring of MAC reservation in a DHCP server? - correct answer
✔✔MAC reservation is a method of implementing DHCP such that a DHCP server will always give a
preassigned IP address to the same host. In other words, the DHCP server assigns a specific IP address
based on the MAC address of the client. This is also known as DHCP reservation or static DHCP.
You have configured a DHCP pool to allocate the IP addresses to the system for 3 days. What have you
defined? - correct answer ✔✔An IP address that is allocated to a DHCP client includes the parameter of
Lease Time. This is the period that the client can use the IP address. When this time is over, the client is
required to either release the address or send a new DHCP request for a renewal of the address lease.
