ACTUAL CNIT 34220 Exam 1 |2025-2026 LATEST UPDATED| REAL EXAM
QUESTIONS AND ANSWERS | 100% RATED CORRECT | 100% VERFIED |
ALREADY GRADED A+
Name resolution - (ANSWER)map station names back to IP addresses
Host files - (ANSWER)common to both DNS host names
DNS - (ANSWER)hierarchical naming system
Static - (ANSWER)DNS is traditionally a __________ approach (Hard coded list of names and IP Addresses,
Assumes a station always has the same IP Address, Works well with Manual or BOOTP, but not with DHCP)
Host.subdomain(s).top_level_domain - (ANSWER)DNS namespace structure
127, 63 - (ANSWER)Domains have up to _____ levels, _____ characters per domain
Authority - (ANSWER)______________ is handed down from top level to lower levels
Inter Nic - (ANSWER)manages the top level (root) domains (edu, com, gov, mil, etc.)
,Domains - (ANSWER)map back to the names used in the DNS hierarchy (purdue.edu, net.lcl)
Zones - (ANSWER)represent the methods used to manage domains
authoritative - (ANSWER)A zone is __________________ for a domain or subdomain
2 - (ANSWER)Each second level domain must have at least ______ authoritative DNS servers
Authoritative server - (ANSWER)contains actual DNS entries, must be up 24/7
Next higher level's configuration - (ANSWER)where the address for the authoritative server is listed
13 - (ANSWER)number of root name servers around the world
Recursive and iterative - (ANSWER)the two approaches to forward name resolution
Recursive - (ANSWER)approach to forward name resolution, an end node (resolver) sends a request to the name server
is obligated to supply an IP address for a DNS name
,Iterative - (ANSWER)approach to forward name resolution, when the name server consults the root hints file, and it is
pointed to the authoritative server
name servers - (ANSWER)Resolved names are cached by _______________
TTL - (ANSWER)the amount of time that a server can hold the cached data is determined by
Zone administrator - (ANSWER)who sets the TTL
DNS Zone Files - (ANSWER)file for each zone containing records
SOA (Start of Authority) - (ANSWER)DNS zone file, states that this is the definitive name server for the domain, uses a
'.' Instead of an '@' for email
NS - (ANSWER)DNS zone file, name server in the domain, identifies the name servers that are authoritative for the
zone, useful for backups, needs the FQDN of the zone and FQDN of the name server
A(ddress) Record - (ANSWER)DNS zone file, provides IP address of for each of the hosts that you want to make
accessible via DNS
, MX Record - (ANSWER)DNS zone file, mail exchange, indicates that mail addressed to a domain name should be
forwarded to another host, identify the mail server for a domain
HINFO - (ANSWER)DNS zone file, host info record, machine type, operating system, serial number
WKS (well-known service record) - (ANSWER)DNS zone file, address, protocol, and service provided by a host
CNAME (Canonical Name) Record - (ANSWER)DNS zone file, stores nickname for a host, creates an alias for a FQDN
TXT - (ANSWER)DNS zone file, documentation file
Reverse DNS Resolution - (ANSWER)allows the DNS name of a known IP address to be resolved
In-addr-arpa - (ANSWER)where information on IP address in reverse order are stored
PTR records - (ANSWER)opposite of an A record, stores the FQDN for an IP address (in reverse order)
Authoritative and non-authoritative servers - (ANSWER)two types of DNS servers
Authoritative servers - (ANSWER)contain a persistent copy of the domain's records, primary and secondary server
QUESTIONS AND ANSWERS | 100% RATED CORRECT | 100% VERFIED |
ALREADY GRADED A+
Name resolution - (ANSWER)map station names back to IP addresses
Host files - (ANSWER)common to both DNS host names
DNS - (ANSWER)hierarchical naming system
Static - (ANSWER)DNS is traditionally a __________ approach (Hard coded list of names and IP Addresses,
Assumes a station always has the same IP Address, Works well with Manual or BOOTP, but not with DHCP)
Host.subdomain(s).top_level_domain - (ANSWER)DNS namespace structure
127, 63 - (ANSWER)Domains have up to _____ levels, _____ characters per domain
Authority - (ANSWER)______________ is handed down from top level to lower levels
Inter Nic - (ANSWER)manages the top level (root) domains (edu, com, gov, mil, etc.)
,Domains - (ANSWER)map back to the names used in the DNS hierarchy (purdue.edu, net.lcl)
Zones - (ANSWER)represent the methods used to manage domains
authoritative - (ANSWER)A zone is __________________ for a domain or subdomain
2 - (ANSWER)Each second level domain must have at least ______ authoritative DNS servers
Authoritative server - (ANSWER)contains actual DNS entries, must be up 24/7
Next higher level's configuration - (ANSWER)where the address for the authoritative server is listed
13 - (ANSWER)number of root name servers around the world
Recursive and iterative - (ANSWER)the two approaches to forward name resolution
Recursive - (ANSWER)approach to forward name resolution, an end node (resolver) sends a request to the name server
is obligated to supply an IP address for a DNS name
,Iterative - (ANSWER)approach to forward name resolution, when the name server consults the root hints file, and it is
pointed to the authoritative server
name servers - (ANSWER)Resolved names are cached by _______________
TTL - (ANSWER)the amount of time that a server can hold the cached data is determined by
Zone administrator - (ANSWER)who sets the TTL
DNS Zone Files - (ANSWER)file for each zone containing records
SOA (Start of Authority) - (ANSWER)DNS zone file, states that this is the definitive name server for the domain, uses a
'.' Instead of an '@' for email
NS - (ANSWER)DNS zone file, name server in the domain, identifies the name servers that are authoritative for the
zone, useful for backups, needs the FQDN of the zone and FQDN of the name server
A(ddress) Record - (ANSWER)DNS zone file, provides IP address of for each of the hosts that you want to make
accessible via DNS
, MX Record - (ANSWER)DNS zone file, mail exchange, indicates that mail addressed to a domain name should be
forwarded to another host, identify the mail server for a domain
HINFO - (ANSWER)DNS zone file, host info record, machine type, operating system, serial number
WKS (well-known service record) - (ANSWER)DNS zone file, address, protocol, and service provided by a host
CNAME (Canonical Name) Record - (ANSWER)DNS zone file, stores nickname for a host, creates an alias for a FQDN
TXT - (ANSWER)DNS zone file, documentation file
Reverse DNS Resolution - (ANSWER)allows the DNS name of a known IP address to be resolved
In-addr-arpa - (ANSWER)where information on IP address in reverse order are stored
PTR records - (ANSWER)opposite of an A record, stores the FQDN for an IP address (in reverse order)
Authoritative and non-authoritative servers - (ANSWER)two types of DNS servers
Authoritative servers - (ANSWER)contain a persistent copy of the domain's records, primary and secondary server
