CNIT 34220 EXAM 1 QUESTIONS WITH VERIFIED
ANSWERS
Name resolution - Answers - map station names back to IP addresses
Host files - Answers - common to both DNS host names
DNS - Answers - hierarchical naming system
Static - Answers - 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 - Answers - DNS namespace
structure
127, 63 - Answers - Domains have up to _____ levels, _____ characters
per domain
Authority - Answers - ______________ is handed down from top level to
lower levels
Inter Nic - Answers - manages the top level (root) domains (edu, com, gov,
mil, etc.)
Domains - Answers - map back to the names used in the DNS hierarchy
(purdue.edu, net.lcl)
Zones - Answers - represent the methods used to manage domains
authoritative - Answers - A zone is __________________ for a domain or
subdomain
2 - Answers - Each second level domain must have at least ______
authoritative DNS servers
, Authoritative server - Answers - contains actual DNS entries, must be up
24/7
Next higher level's configuration - Answers - where the address for the
authoritative server is listed
13 - Answers - number of root name servers around the world
Recursive and iterative - Answers - the two approaches to forward name
resolution
Recursive - Answers - 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 - Answers - approach to forward name resolution, when the name
server consults the root hints file, and it is pointed to the authoritative
server
name servers - Answers - Resolved names are cached by
_______________
TTL - Answers - the amount of time that a server can hold the cached data
is determined by
Zone administrator - Answers - who sets the TTL
DNS Zone Files - Answers - file for each zone containing records
SOA (Start of Authority) - Answers - DNS zone file, states that this is the
definitive name server for the domain, uses a '.' Instead of an '@' for email
NS - Answers - 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 - Answers - DNS zone file, provides IP address of for
each of the hosts that you want to make accessible via DNS
ANSWERS
Name resolution - Answers - map station names back to IP addresses
Host files - Answers - common to both DNS host names
DNS - Answers - hierarchical naming system
Static - Answers - 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 - Answers - DNS namespace
structure
127, 63 - Answers - Domains have up to _____ levels, _____ characters
per domain
Authority - Answers - ______________ is handed down from top level to
lower levels
Inter Nic - Answers - manages the top level (root) domains (edu, com, gov,
mil, etc.)
Domains - Answers - map back to the names used in the DNS hierarchy
(purdue.edu, net.lcl)
Zones - Answers - represent the methods used to manage domains
authoritative - Answers - A zone is __________________ for a domain or
subdomain
2 - Answers - Each second level domain must have at least ______
authoritative DNS servers
, Authoritative server - Answers - contains actual DNS entries, must be up
24/7
Next higher level's configuration - Answers - where the address for the
authoritative server is listed
13 - Answers - number of root name servers around the world
Recursive and iterative - Answers - the two approaches to forward name
resolution
Recursive - Answers - 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 - Answers - approach to forward name resolution, when the name
server consults the root hints file, and it is pointed to the authoritative
server
name servers - Answers - Resolved names are cached by
_______________
TTL - Answers - the amount of time that a server can hold the cached data
is determined by
Zone administrator - Answers - who sets the TTL
DNS Zone Files - Answers - file for each zone containing records
SOA (Start of Authority) - Answers - DNS zone file, states that this is the
definitive name server for the domain, uses a '.' Instead of an '@' for email
NS - Answers - 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 - Answers - DNS zone file, provides IP address of for
each of the hosts that you want to make accessible via DNS
