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