Question 1

The User Datagram Protocol (UDP) acts as a substitute to TCP when there is a need for speed of communication and quality can be sacrificed.

Accepted Answer

UDP provides faster communication as it does not guarantee reliable delivery of data and does not involve the overhead of error-checking and retransmission of lost packets, which are features provided by TCP. However, this speed comes at the expense of quality as there is no guarantee that all packets will be delivered or received in the correct order.

Question 2

Compare circuit- and packet-switched networks.

Accepted Answer

The answer of Compare circuit- and packet-switched networks....

Question 3

_____ act as storage places where a firm's servers get super-fast connections as close to the action as possible.
A) Colocation facilities
B) Incubation facilities
C) Internet exchange points
D) Dispatch facilities
E) Preening facilities

Accepted Answer

Colocation facilities provide a physical space for a firm's servers, with high-speed connections to the internet. They are designed to offer a secure, reliable, and cost-effective option for companies to host their servers and network equipment.

Question 4

Describe the process involving the transmission of a Web page from a Web server to a user's computer.

Accepted Answer

The answer of Describe the process involving the transmission of...

Question 5

____ repeatedly sends a cluster of three packets starting at the first router connected to a computer, then the next, and so on, building out the path that packets take to their destination.
A) Firewall
B) Router
C) Pathfinder
D) Mapper
E) Traceroute

Accepted Answer

The technique described in the question is known as Traceroute. Traceroute is a network diagnostic tool that is used to track in real-time the pathway taken by packets over an IP network, including the routers and firewalls that are encountered along the way. This is done by sending a cluster of packets and analyzing the results to determine the latency, loss rates, and other characteristics of the network. Therefore, the correct answer is E) Traceroute.

Question 6

ISPs and IXPs that carry out peering generate revenue by charging each other fees based on their traffic contribution.

Accepted Answer

Peering agreements between ISPs and IXPs are typically settlement-free, meaning they do not charge each other fees for traffic exchange.

Question 7

Which of the following applications is most likely to use UDP instead of TCP?
A) E-mail
B) Web transmissions
C) File transfer
D) Peer-to-peer downloads
E) Web-based phone calls

Accepted Answer

Web-based phone calls (also known as VoIP or Voice over Internet Protocol) often use UDP instead of TCP because it prioritizes real-time communication over data integrity. Unlike TCP, UDP does not guarantee that all data packets will be delivered, but this is less of an issue for real-time communication where a delayed or lost packet can be compensated for.

Question 8

When considering overall network speed, a system's speed is determined by its fastest component.

Accepted Answer

A system's overall network speed is determined by its slowest component, due to the principle of bottlenecking where the slowest part limits the performance of the entire system.

Question 9

Internet networks are _____.
A) bit-switched networks
B) circuit-switched networks
C) data-switched networks
D) packet-switched networks
E) byte-switched networks

Accepted Answer

Internet networks use packet-switched technology, where data is broken up into small packets and sent individually across the network, with each packet taking its own unique route to its destination. This allows for more efficient use of network resources and faster data transfer speeds.

Question 10

Peering refers to:
A) high-speed data lines provided by many firms all across the world that interconnect and collectively form the core of the Internet.
B) the broadband service provided via light-transmitting fiber-optic cables.
C) the language used to compose Web pages.
D) a situation when separate ISPs connect their networking equipment together to share traffic.
E) a system that connects end users to the Internet.

Accepted Answer

Peering refers to the practice of separate Internet Service Providers (ISPs) connecting their networks together to share traffic. This allows for more efficient routing of traffic and can improve network performance.

Question 11

A unit of data forwarded by a network is called _____.

Accepted Answer

The answer of A unit of data forwarded by a...

Question 12

One of the functions of the IP is to:
A) route message packets to the final destination.
B) slice up the message into smaller chunks of data called packets, to be sent over the network.
C) check for damaged or corrupt message packets and request for replacements, if needed.
D) label message packets with source and destination addresses.
E) rearrange message packets in the same sequence as they were sent.

Accepted Answer

The answer of One of the functions of the IP...

Question 13

Peering usually takes place at neutral sites called _____.
A) https
B) IPs
C) ISPs
D) IXPs
E) STPs

Accepted Answer

Peering usually takes place at neutral sites called Internet Exchange Points (IXPs).

Question 14

The Internet Protocol Suite consists of the Internet Protocol and _____.
A) File Transfer Protocol
B) Simple Mail Transfer Protocol
C) Session Initiation Protocol
D) Datagram Congestion Control Protocol
E) Transmission Control Protocol

Accepted Answer

The Internet Protocol Suite consists of the Internet Protocol (IP) and the Transmission Control Protocol (TCP). While other protocols such as File Transfer Protocol (FTP), Simple Mail Transfer Protocol (SMTP), and Session Initiation Protocol (SIP) are part of the suite, they are not essential components of it. The Datagram Congestion Control Protocol is not part of the Internet Protocol Suite.

Question 15

_____ involves allowing voice packets to gain delivery importance over packets for applications like e-mail.
A) Voice precedence
B) Data rationing
C) Right-of-way for voice
D) Information queuing
E) Packet prioritization

Accepted Answer

Packet prioritization involves assigning a higher priority to voice packets over other types of packets in order to ensure real-time delivery of voice data. This is achieved through techniques such as Quality of Service (QoS) and Differentiated Services (DiffServ).

Question 16

Which of the following represents the correct sequence of actions taken by the TCP at the destination computer to ensure a perfect copy of the sent message is received?
A) Slice the message into packets; route the packets to the destination; check if packets are damaged; request for new copies of damaged packets
B) Check if all sent packets are received; check if packets are damaged; request for new copies of damaged packets; put packets in correct order
C) Slice the message into packets; check if packets are damaged; put packets in correct order; request for new copies of damaged packets
D) Route the packets to the destination; put packets in correct order; check if packets are damaged; request for new copies of damaged packets
E) Put the packets in correct order; check if all sent packets are received; check if packets are damaged; request for new copies of damaged packets

Accepted Answer

Option B represents the correct sequence of actions taken by the TCP to ensure a perfect copy of the sent message is received. The TCP checks if all sent packets are received, then checks if any packets are damaged. If damaged packets are found, it requests new copies of those packets. Finally, the packets are put in the correct order to recreate the original message.

Question 17

A(n) _____ is a computing device that connects networks and exchanges data between them.

Accepted Answer

The answer of A(n) _____ is a computing device that...

Question 18

Circuit-switched networks are more efficient than packet-switched networks because of the nature of the dedicated connection they provide.

Accepted Answer

Packet-switched networks are generally considered to be more efficient than circuit-switched networks because they can dynamically allocate resources based on demand and can transmit multiple data packets simultaneously. Circuit-switched networks, on the other hand, require a dedicated connection for the entire duration of the call, even if there is no actual data being transmitted. This can result in inefficient use of network resources.

Question 19

Circuit-switched networks provide connection between two parties by:
A) assigning entire circuit capacity to the call on a first-come first-serve basis.
B) dedicating a part of the circuit capacity to the call.
C) repeatedly switching between an open and closed state depending on the duration of the call.
D) slicing up the conversation into smaller chunks and transmitting them over the circuit.
E) prioritizing voice calls over other connections.

Accepted Answer

Circuit-switched networks dedicate a part of the circuit capacity to the call, ensuring that the connection is not shared with other calls or data. This allows for a predictable level of connection quality, but can result in underutilization of the circuit.

Question 20

Most mobile cell phone services are exempted from having to license the wireless spectrum for transmission.

Accepted Answer

Mobile cell phone services do have to obtain licenses for using the wireless spectrum for transmission. These licenses are issued by regulatory bodies such as the Federal Communications Commission (FCC) in the United States.

Quiz 13: A Managers Guide to the Internet and Telecommunications

The User Datagram Protocol (UDP) acts as a substitute to TCP when there is a need for speed of communication and quality can be sacrificed.

Compare circuit- and packet-switched networks.

_____ act as storage places where a firm's servers get super-fast connections as close to the action as possible.

Describe the process involving the transmission of a Web page from a Web server to a user's computer.

____ repeatedly sends a cluster of three packets starting at the first router connected to a computer, then the next, and so on, building out the path that packets take to their destination.

ISPs and IXPs that carry out peering generate revenue by charging each other fees based on their traffic contribution.

Which of the following applications is most likely to use UDP instead of TCP?

When considering overall network speed, a system's speed is determined by its fastest component.

Internet networks are _____.

Peering refers to:

A unit of data forwarded by a network is called _____.

One of the functions of the IP is to:

Peering usually takes place at neutral sites called _____.

The Internet Protocol Suite consists of the Internet Protocol and _____.

_____ involves allowing voice packets to gain delivery importance over packets for applications like e-mail.

Which of the following represents the correct sequence of actions taken by the TCP at the destination computer to ensure a perfect copy of the sent message is received?

A(n) _____ is a computing device that connects networks and exchanges data between them.

Circuit-switched networks are more efficient than packet-switched networks because of the nature of the dedicated connection they provide.

Circuit-switched networks provide connection between two parties by:

Most mobile cell phone services are exempted from having to license the wireless spectrum for transmission.