Chapter 17 Quiz

1		In a _______ name space, a name is assigned to an address. A name in this space is a sequence of characters without structure.
			A)	flat
			B)	hierarchical
			C)	organized
			D)	none of the above
2		In a _________name space, each name is made of several parts.
			A)	flat
			B)	hierarchical
			C)	organized
			D)	none of the above
3		To have a hierarchical name space, a ______________ was designed.
			A)	domain space
			B)	domain name
			C)	domain name space
			D)	none of the above
4		In the DNS, the names are defined in ___________ structure.
			A)	a linear list
			B)	an inverted-tree
			C)	a graph
			D)	none of the above
5		Each node in the tree has a _______, which is a string with a maximum of ___ characters.
			A)	label; 127
			B)	name; 255
			C)	label; 63
			D)	none of the above
6		The root of the DNS tree is _______.
			A)	a string of characters
			B)	a string of 63 characters
			C)	an empty string
			D)	none of the above
7		A full domain name is a sequence of labels separated by ________.
			A)	semicolons
			B)	dots
			C)	colons
			D)	none of the above
8		If a label is terminated by a null string, it is called a __________.
			A)	PQDN
			B)	FQDN
			C)	SQDN
			D)	none of the above
9		If a label is not terminated by a null string, it is called a __________.
			A)	PQDN
			B)	FQDN
			C)	SQDN
			D)	none of the above
10		A _________ is a subtree of the domain name space.
			A)	label
			B)	name
			C)	domain
			D)	none of the above
11		What a server is responsible for or has authority over is called a _________.
			A)	domain
			B)	label
			C)	zone
			D)	none of the above
12		A _______ is a server whose zone consists of the whole tree.
			A)	domain server
			B)	zone server
			C)	root server
			D)	none of the above
13		A ________ server loads all information from the disk file.
			A)	primary
			B)	secondary
			C)	zone
			D)	none of the above
14		A ________ server loads all information from the primary server.
			A)	primary
			B)	secondary
			C)	zone
			D)	none of the above
15		When the secondary downloads information from the primary, it is called ______ transfer.
			A)	domain
			B)	zone
			C)	label
			D)	none of the above
16		In the Internet, the domain name space (tree) is divided into _______ different sections:
			A)	three
			B)	two
			C)	four
			D)	none of the above
17		The _______ domains define registered hosts according to their generic behavior.
			A)	generic
			B)	country
			C)	inverse
			D)	none of the above
18		The first level in the generic domains section allows ______ possible labels.
			A)	10
			B)	12
			C)	16
			D)	none of the above
19		The ____________ domain section uses two-character country abbreviations.
			A)	generic
			B)	country
			C)	inverse
			D)	none of the above
20		The _________ domain is used to map an address to a name.
			A)	generic
			B)	country
			C)	inverse
			D)	none of the above
21		In __________ resolution, the resolver expects the server to supply the final answer.
			A)	iterative
			B)	recursive
			C)	straight
			D)	none of the above
22		In __________ resolution, the server returns the IP address of the server that it thinks can resolve the query.
			A)	iterative
			B)	recursive
			C)	straight
			D)	none of the above
23		In the domain name chal.atc.fhda.edu, _______ is the least specific label.
			A)	chal
			B)	atc
			C)	edu
			D)	none of the above
24		In the domain name chal.atc.fhda.edu, _______ is the most specific label.
			A)	chal
			B)	atc
			C)	fhda
			D)	none of the above
25		A host with the domain name pit.arc.nasa.gov. is on the _______ level of the DNS hierarchical tree. (The root is level one.)
			A)	third
			B)	fourth
			C)	fifth
			D)	none of the above
26		A pointer query involves the _______ domain.
			A)	inverse
			B)	reverse
			C)	root
			D)	none of the above
27		DNS can use the services of ________ using the well-known port 53.
			A)	UDP
			B)	TCP
			C)	either a or b
			D)	none of the above