 |
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 |