Question 1

Which layer of the TCP/IP hierarchy decides the direction in which message segments are transferred across the Internet?
A) Application
B) Transport
C) Network
D) Link

Accepted Answer

The Network layer of the TCP/IP hierarchy is responsible for routing and forwarding the message segments across the internet. It decides the direction of the transmission based on the network address of the destination device. The Transport layer, on the other hand, is responsible for segmenting and reassembling the data and ensuring its reliable delivery. The Application layer provides services for user applications such as email, web browsing, etc. and the Link layer is responsible for the physical transmission of data over the network.

Question 2

Which of the following connects existing networks to form an internet?
A) Bridge
B) Router
C) Switch
D) Repeater

Accepted Answer

A router is a networking device that connects multiple networks together and directs traffic between them, forming an internet. Bridges, switches, and repeaters are also networking devices but they are used to connect devices within a single network, not to form an internet.

Question 3

The primary purpose of which of the following is not the enhancement of security?
A) ICANN
B) Firewall
C) Encryption
D) CERT

Accepted Answer

ICANN stands for Internet Corporation for Assigned Names and Numbers and is responsible for managing the domain name system (DNS) and IP addresses for the internet. While ICANN plays a crucial role in ensuring the smooth functioning of the internet, its primary purpose is not the enhancement of security. On the other hand, firewalls, encryption, and CERT (Computer Emergency Response Team) are all security measures used to protect networks, data, and systems from unauthorized access and cyber attacks.

Question 4

Which of the following is not an application of the Internet?
A) FTP
B) Email
C) Telnet
D) CERT

Accepted Answer

The acronym CERT stands for Computer Emergency Response Team, which is a group responsible for responding to and handling computer security incidents. It is not an application of the Internet but rather a service provided by organizations to protect their networks against cyber attacks. FTP, email, and Telnet are all applications of the Internet that allow users to transfer files, send messages, and remotely log into other computers, respectively.

Question 5

Ethernet is a means of implementing which of the following network topologies?
A) Star
B) WiFi
C) Bus

Accepted Answer

The answer of Ethernet is a means of implementing which...

Question 6

Which layer of the TCP/IP hierarchy decides which application should receive an incoming message?
A) Application
B) Transport
C) Network
D) Link

Accepted Answer

The application layer is responsible for deciding which application should receive an incoming message. It is the highest layer in the TCP/IP hierarchy and deals with issues related to application-level protocols, such as HTTP, FTP, SMTP, etc.

Question 7

Which of the following is not a way of classifying networks?
A) WAN versus LAN
B) Closed versus open
C) Router versus bridge
D) Star versus bus

Accepted Answer

Router versus bridge refers to types of networking devices or functions rather than methods of classifying entire networks. WAN vs. LAN, closed vs. open, and star vs. bus are all ways to categorize network types or architectures.

Question 8

Which layer of the TCP/IP hierarchy is responsible for obtaining the correct address for a message's destination?
A) Application
B) Transport
C) Network
D) Link

Accepted Answer

The answer of Which layer of the TCP/IP hierarchy is...

Question 9

Which of the following is used to translate between IP addresses and mnemonic addresses?
A) File server
B) Mail server
C) Name server
D) FTP server

Accepted Answer

A name server, also known as a DNS server, is used to translate between IP addresses and mnemonic addresses (domain names). File servers, mail servers, and FTP servers all have specific functions related to file storage, email management, and file transfer, respectively, but they do not perform the function of translating between IP addresses and mnemonic addresses.

Question 10

Which layer of the TCP/IP hierarchy presents incoming messages to the computer user?
A) Application
B) Transport
C) Network
D) Link

Accepted Answer

The Application layer is responsible for presenting incoming messages to the computer user. It provides services that directly support user applications, such as email clients and web browsers. The Transport layer is responsible for providing reliable communication between processes running on different hosts, while the Network layer deals with routing and forwarding of packets. The Link layer is responsible for the transmission of data over a physical medium, such as Ethernet or Wi-Fi.

Question 11

Which layer of the TCP/IP hierarchy reassembles messages as their pieces arrive at the destination?
A) Application
B) Transport
C) Network
D) Link

Accepted Answer

The Transport layer of the TCP/IP model is responsible for reassembling the segmented messages as they arrive at the destination to ensure that data is received as a complete message.

Question 12

Which layer of the TCP/IP hierarchy actually transmits a message?
A) Application
B) Transport
C) Network
D) Link

Accepted Answer

The Link layer is responsible for transmitting a message over a physical network medium, such as Ethernet or Wi-Fi. The Application layer is responsible for formatting and interpreting data for specific applications, the Transport layer is responsible for establishing and maintaining end-to-end connections, and the Network layer is responsible for routing data between different networks.

Question 13

Which of the following is not a means of performing interprocess communication over a network?
A) Client/server
B) ICANN
C) Peer-to-peer

Accepted Answer

ICANN (Internet Corporation for Assigned Names and Numbers) is the organization responsible for managing the Internet's domain name system. It has no direct relation to interprocess communication between programs running on different computers on a network. Client/server and peer-to-peer are two common methods of performing interprocess communication over a network.

Question 14

Which layer of the TCP/IP hierarchy chops messages into units whose size is compatible with the Internet?
A) Application
B) Transport
C) Network
D) Link

Accepted Answer

The Transport layer is responsible for breaking down data into segments or packets that are of a size compatible with the Internet. It also provides reliability through error detection and correction mechanisms.

Question 15

Which of the following identifies the application to which a message arriving from the Internet should be given?
A) Protocol
B) Port number
C) Domain
D) Hop count

Accepted Answer

Port number identifies the application to which a message arriving from the Internet should be given. Each application uses a specific port number to receive incoming messages.

Question 16

Which of the following is an Internet application that is named after its underlying protocol?
A) Email
B) UDP
C) FTP
D) World Wide Web

Accepted Answer

FTP stands for File Transfer Protocol, which is both an Internet application and an underlying protocol.

Question 17

Which of the following is not a means of connecting networks?
A) Switch
B) Server
C) Router
D) Bridge

Accepted Answer

A server is a computer or device that provides services to other devices on the network, such as file sharing, printer sharing, or email services. However, it is not a means of connecting networks. The other options (Switch, Router, Bridge) are all devices that are used to connect networks.

Question 18

Which of the following is assigned the task of providing individual users access to the Internet?
A) Tier-1 ISPs
B) Tier-2 ISPs
C) Access ISPs
D) ICANN

Accepted Answer

Access ISPs, also known as retail ISPs, provide individual users with access to the Internet through a variety of technologies such as dial-up, DSL, and cable modems. Tier-1 and Tier-2 ISPs primarily provide interconnection among networks and may also directly supply Internet access to large organizations. ICANN is responsible for the administration of domain names and IP addresses.

Question 19

Which standards organization produced the OSI reference model for internet communication?
A) ANSI
B) IEEE
C) ISO

Accepted Answer

The OSI reference model was produced by the International Organization for Standardization (ISO).

Question 20

Which of the following is a protocol for controlling the right to transmit a message in a network?
A) UDP
B) CSMA/CD
C) TCP
D) FTP

Accepted Answer

CSMA/CD (Carrier Sense Multiple Access/Collision Detection) is a protocol used in Ethernet networks to control the right to transmit a message. It helps to prevent collisions between two or more devices trying to communicate at the same time.UDP (User Datagram Protocol) is a connectionless protocol used for data transfer, TCP (Transmission Control Protocol) is a reliable protocol used for establishing a connection and ensuring data delivery, and FTP (File Transfer Protocol) is a protocol used specifically for file transfers. None of these protocols are designed for controlling the right to transmit a message in a network.

Quiz 4: Networks and the Internet

Which layer of the TCP/IP hierarchy decides the direction in which message segments are transferred across the Internet?

Which of the following connects existing networks to form an internet?

The primary purpose of which of the following is not the enhancement of security?

Which of the following is not an application of the Internet?

Ethernet is a means of implementing which of the following network topologies?

Which layer of the TCP/IP hierarchy decides which application should receive an incoming message?

Which of the following is not a way of classifying networks?

Which layer of the TCP/IP hierarchy is responsible for obtaining the correct address for a message's destination?

Which of the following is used to translate between IP addresses and mnemonic addresses?

Which layer of the TCP/IP hierarchy presents incoming messages to the computer user?

Which layer of the TCP/IP hierarchy reassembles messages as their pieces arrive at the destination?

Which layer of the TCP/IP hierarchy actually transmits a message?

Which of the following is not a means of performing interprocess communication over a network?

Which layer of the TCP/IP hierarchy chops messages into units whose size is compatible with the Internet?

Which of the following identifies the application to which a message arriving from the Internet should be given?

Which of the following is an Internet application that is named after its underlying protocol?

Which of the following is not a means of connecting networks?

Which of the following is assigned the task of providing individual users access to the Internet?

Which standards organization produced the OSI reference model for internet communication?

Which of the following is a protocol for controlling the right to transmit a message in a network?