CNAME records in DNS are used to provide an alias for another domain name, making it easier to manage multiple services under a single domain.

Root DNS servers are at the top of the DNS hierarchy and provide information about the authoritative servers for top-level domains.

Authoritative name servers hold the authoritative DNS records for a domain.

A forward DNS lookup should be performed to determine if a specific DNS server is providing the correct IP address for a domain.

Reservations in DHCP should be configured to ensure specific devices always receive the same IP address based on their MAC address.

DNS caching temporarily stores DNS query results to improve resolution times and reduce the load on DNS servers.

A DHCP relay agent forwards DHCP requests from clients in different subnets to a central DHCP server.

NTP (Network Time Protocol) is used to synchronize the clocks of computers over a network.

The Start of Authority (SOA) record specifies the authoritative information about a domain, including the primary name server and the domain administrator.

The TTL (Time to Live) value in DNS specifies how long a DNS record should be cached by a DNS resolver before it is discarded or refreshed.

Scope options in DHCP allow administrators to configure additional options such as the default gateway and DNS server addresses.

A reverse DNS lookup is used to determine the domain name associated with a given IP address.

SRV (Service) records are used to identify hosts that offer specific services, such as VoIP or instant messaging.

The lease time in DHCP specifies the duration for which an IP address is assigned to a device before it must be renewed.

A DHCP scope defines the range of IP addresses available for dynamic assignment to devices on the network.

A zone transfer should be configured to ensure that a DNS server has the latest records from the primary DNS server.

An NTP client synchronizes its clock with an NTP server to ensure accurate timekeeping across the network.

A CNAME (Canonical Name) record should be configured to provide an alias for the domain name in the event of a failure to resolve from the primary DNS server.

A records in DNS are used to map a domain name to an IPv4 address.

The term ‘stratum’ in NTP is used to describe the hierarchical level of a time source, with lower stratum numbers indicating higher accuracy and reliability.

NS (Name Server) records are used to specify the authoritative DNS server for a domain.

CNAME (Canonical Name) records are used to point to the canonical name of a server and can be used to create an alias for a domain name.

An exclusion range in DHCP ensures that specific IP addresses within the defined scope are not assigned to devices dynamically.

PTR (Pointer) records in DNS are used for reverse DNS lookups, mapping an IP address to a domain name.

Reservation in DHCP is used to ensure specific devices always receive the same IP address based on their MAC address.