MGT601 Midterm Solved MCQs

Application Layer (TCP/IP Suite)

DNS

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

EMail

33: When the sender and the receiver of an email are on the same system, we need only ___________. a. one UA b. two UAs c. one UA and one MTA d. none of the above

34: When the sender and the receiver of an email are on different systems, we need only _____________. a. one MTA b. two UAs c. two UAs and one pair of MTAs d. none of the above

35: When the sender is connected to the mail server via a LAN or a WAN, we need ______________. a. two MTA b. two UAs and two pairs of MTAs c. two UAs and a pair of MTAs d. none of the above

36: When both sender and receiver are connected to a mail server via a LAN or a WAN, we need a. two UAs, two pairs of MTAs, and a pair of MAAs b. two UAs, and two pairs of MTAs c. two UAs, two pairs of MTAs, and two pairs of MAAs d. none of the above

37: ________ provides service to the user to make the process of sending and receiving a message easier. a. An MTA b. An MAA c. A UA d. none of the above

38: Which of the following services is not provided by a UA?

1. composing messages
2. reading messages
3. replying messages
4. all are

39: There are two types of user agents: _________ and ___________. a. command-driven; data-driven b. command-driven; GUI-based c. command-based and data-based d. none of the above

40: The ________ usually contains the sender address, the receiver address, and other information. a. message b. envelope c. both a and b d. none of the above

41: The message contains the ________ and the __________. a. header; envelop b. header; body c. envelop; body d. none of the above

42: In the Internet, the email address consists of two parts: a _______ and a _______. a. local part; domain name b. global part; domain name c. label; domain name d. none of the above

43: _________ is a supplementary protocol that allows non-ASCII data to be sent through email. a. JPEG b. MPEG c. MIME d. none of the above

44: The actual mail transfer is done through ____________. a. Uas b. MTAs c. MAAs d. none of the above

45: The formal protocol that defines the MTA client and server in the Internet is called ___________. a. SMTP b. SNMP c. TELNET d. none of the above

46: The process of transferring a mail message occurs in ________ phases. a. two b. four c. five d. none of the above

47: SMTP is a __________protocol. a. pull b. push c. both a and b d. none of the above

48: The third stage in an email transfer needs a ________ protocol. a. pull b. push c. both a and b d. none of the above

49: The third stage in an email transfer uses a(n) ________ protocol. a. UA b. MTA c. MAA d. none of the above

50: Currently two message access protocols are available: _______ and _________. a. POP3; IMAP2 b. POP4; IMAP1 c. POP3; IMAP4 d. none of the above

51: Which part of the mail created by the UA contains the sender and receiver names?

1. envelope
2. address
3. header
4. none of the above

52: The MIME _______ header uses text to describe the type of data in the body of the message. a. content-type b. content-transfer-encoding c. content-description d. none of the above

53: _______ is more powerful and complex than _______. a. POP3; IMAP4 b. IMAP4; POP3 c. SMTP; POP3 d. none of the above