Explore topic-wise MCQs in Internet of things (IoT).

This section includes 254 Mcqs, each offering curated multiple-choice questions to sharpen your Internet of things (IoT) knowledge and support exam preparation. Choose a topic below to get started.

51.

To access e-mails from any machine and anywhere, we use ................

A. PGP
B. PEM
C. IMAP
D. None of these
Answer» D. None of these
52.

Which of the following could be a legitimate MIB object identifier?

A. 1.3.6.1.2.1.1
B. 1.3.6.1.2.2.1
C. 2.3.6.1.2.1.2
D. none of the above
Answer» B. 1.3.6.1.2.2.1
53.

Port number for (Secure Shell) SSH?

A. 20
B. 21
C. 25
D. 22
Answer» E.
54.

A ________buffer is required for real-time traffic.

A. playback
B. reordering
C. sorting
D. none of the above
Answer» B. reordering
55.

In ________ encoding, the differences between the samples are encoded instead of encoding all the sampled values.

A. predictive
B. perceptual
C. both a and b
D. none of the above
Answer» B. perceptual
56.

An object id defines a _______. Add a zero suffix to define the _______.

A. variable; table
B. table; variable
C. variable; variable contents
D. none of the above
Answer» D. none of the above
57.

The second phase of JPEG is ___________.

A. DCT transformation
B. quantization
C. data compression
D. none of the above
Answer» C. data compression
58.

In FTP, when we _______, it is copied from the server to the client.

A. retrieve a file
B. retrieve a list
C. a and b
D. none of the above
Answer» D. none of the above
59.

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
Answer» C. both a and b
60.

The message contains the ________ and the __________.

A. header; envelop
B. header; body
C. envelop; body
D. none of the above
Answer» C. envelop; body
61.

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

A. composing messages
B. reading messages
C. replying messages
D. all are
Answer» E.
62.

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
Answer» B. two UAs, and two pairs of MTAs
63.

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
Answer» C. command-based and data-based
64.

________ 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
Answer» D. none of the above
65.

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
Answer» C. two UAs and a pair of MTAs
66.

_________ 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
Answer» D. none of the above
67.

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
Answer» B. global part; domain name
68.

The third stage in an email transfer uses a(n) ________ protocol.

A. UA
B. MTA
C. MAA
D. none of the above
Answer» D. none of the above
69.

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
Answer» D. none of the above
70.

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

A. envelope
B. address
C. header
D. none of the above
Answer» D. none of the above
71.

The third stage in an email transfer needs a ________ protocol.

A. pull
B. push
C. both a and b
D. none of the above
Answer» B. push
72.

A cookie is made by the ________ and eaten by the _________.

A. client; client
B. client; server
C. server; server
D. none of the above
Answer» D. none of the above
73.

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
Answer» B. SNMP
74.

In a ___________ connection, one TCP connection is made for each request/response.

A. persistent
B. non-persistent
C. both a and b
D. none of the above
Answer» C. both a and b
75.

_______ is more powerful and complex than _______.

A. POP3; IMAP4
B. IMAP4; POP3
C. SMTP; POP3
D. none of the above
Answer» C. SMTP; POP3
76.

The documents in the WWW can be grouped into ______ broad categories.

A. two
B. three
C. four
D. none of the above
Answer» C. four
77.

A _______ document is a fixed-content document that is created and stored in a server. The client can get a copy of the document only.

A. static
B. dynamic
C. active
D. none of the above
Answer» B. dynamic
78.

One way to create an active document is to use __________.

A. CGI
B. Java stand-alone programs
C. Java applets
D. none of the above
Answer» D. none of the above
79.

For many applications, we need a program or a script to be run at the client site. These are called _______________ documents.

A. static
B. dynamic
C. active
D. none of the above
Answer» D. none of the above
80.

___________ is a technology that creates and handles dynamic documents.

A. GIC
B. CGI
C. GCI
D. none of the above
Answer» C. GCI
81.

Dynamic documents are sometimes referred to as _________ dynamic documents.

A. client-site
B. server-site
C. both a and b
D. none of the above
Answer» C. both a and b
82.

A _______ document is created by a Web server whenever a browser requests the document.

A. static
B. dynamic
C. active
D. none of the above
Answer» C. active
83.

In a ___________connection, the server leaves the connection open for more requests after sending a response.

A. persistent connection
B. nonpersistent
C. both a and b
D. none of the above
Answer» B. nonpersistent
84.

To let the client know about the type of document sent, a CGI program creates

A. Body
B. Header
C. Borders
D. Footer
Answer» C. Borders
85.

An applet is _______ document application program.

A. a static
B. an active
C. a passive
D. a dynamic
Answer» C. a passive
86.

A browser can retrieve and run an HTML file that has embedded the address of

A. Applets
B. Language
C. HTML
D. HTTP
Answer» B. Language
87.

Nontextual information such as digitized photos or graphic images is not a physical part of an

A. WebPage
B. WebData
C. HTML
D. Web-document
Answer» D. Web-document
88.

A user needs to send the server some information. The request line method is _______.

A. OPTION
B. PATCH
C. POST
D. none of the above
Answer» D. none of the above
89.

To create the Web Pages we use a term, called

A. TCP/IP
B. WWW
C. HTML
D. FTP
Answer» D. FTP
90.

In FTP, there are three types of _______: stream, block, and compressed.

A. file types
B. data structures
C. transmission modes
D. none of the above
Answer» D. none of the above
91.

During an FTP session the data connection is opened _______.

A. exactly once
B. exactly twice
C. as many times as necessary
D. none of the above
Answer» D. none of the above
92.

SMTP is a __________protocol.

A. pull
B. push
C. both a and b
D. none of the above
Answer» C. both a and b
93.

Currently two message access protocols are available: _______ and _________.

A. POP3; IMAP2
B. POP4; IMAP1
C. POP3; IMAP4
D. none of the above
Answer» D. none of the above
94.

The World Wide Web (WWW), was originally designed as a

A. Stateless Document
B. Stateless Program
C. Stateless Entity
D. Stateless IP
Answer» D. Stateless IP
95.

In FTP, _______ is the service type used by the IP protocol because this is an interactive connection between a user (human) and a server.

A. maximize throughput
B. minimize delay
C. minimize error
D. none of the above
Answer» C. minimize error
96.

The process of transferring a mail message occurs in ________ phases.

A. two
B. four
C. five
D. none of the above
Answer» E.
97.

Active documents are sometimes referred to as _________ dynamic documents.

A. client-side
B. server-side
C. both a and b
D. none of the above
Answer» B. server-side
98.

In Uniform Resource Locator (URL), path is the pathname of the file where the information is

A. Stored
B. Located
C. to be transferred
D. Transferred
Answer» C. to be transferred
99.

The Hypertexts are documents linked to one another through the concept of

A. Variables
B. Pointers
C. Arrays
D. Stacks
Answer» C. Arrays
100.

_____________ is a language for creating Web pages.

A. HTTP
B. HTML
C. FTTP
D. none of the above
Answer» C. FTTP