Question 1

Identify the various components in the following Web address and briefly describe each of them:

Accepted Answer

The answer of Identify the various components in the following...

Question 2

ISPs and IXPs that carry out peering are required by the FCC to charge each other fees based on their traffic contribution.

Accepted Answer

The FCC does not require ISPs and IXPs to charge each other fees for peering. Peering agreements are typically based on mutual benefits and negotiated between the parties involved.

Question 3

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

Accepted Answer

UDP is a connectionless protocol that does not provide reliability or error-checking mechanisms like TCP, but it operates at a much faster speed because it does not wait for acknowledgments or retransmit lost packets. Therefore, it is suitable for applications where occasional data loss or duplication is acceptable, such as gaming, video streaming, or real-time communication.

Question 4

Circuit-switched networks are advantageous because they offer an inexhaustible supply of bandwidth for telecommunications.

Accepted Answer

Circuit-switched networks allocate a fixed amount of bandwidth to each call, meaning that the total available bandwidth is limited and can be exhausted if there are too many calls or if a few calls use a disproportionate amount of bandwidth. This is in contrast to packet-switched networks, which dynamically allocate bandwidth as needed and can make more efficient use of available resources.

Question 5

Routers don't have perfect, end-to-end information on all points in the Internet.

Accepted Answer

Routers can only see a limited portion of the network that they are directly connected to, and they rely on other routers to pass along information to reach destinations outside of their network. Therefore, they don't have perfect, end-to-end information on all points in the Internet.

Question 6

Routing protocol that is in charge of forwarding packets on the Internet is known as voice over Internet protocol.

Accepted Answer

The routing protocol in charge of forwarding packets on the Internet is known as the Internet Protocol (IP). Voice over Internet Protocol (VoIP) is a technology used to make voice calls over the Internet.

Question 7

The TCP works at both ends of Internet communication.

Accepted Answer

The Transmission Control Protocol (TCP) is a protocol that works at both ends of Internet communication.

Question 8

_____ is the nonprofit organization responsible for managing the Internet's domain and numbering systems.

Accepted Answer

The answer of _____ is the nonprofit organization responsible for...

Question 9

_____ refers to the application transfer protocol that is used to copy files from one computer to another.

Accepted Answer

The answer of _____ refers to the application transfer protocol...

Question 10

The fault-tolerant nature of the DNS ensures that:
A) if users can't reach a host computer, they are redirected back to the previous page.
B) mistyped or misspelled Web addresses are automatically corrected.
C) if a document or file can't be accessed, it won't result in a 404 error.
D) the service continues functioning even if one nameserver goes down.
E) mismatched host names and domain names are still assigned with the correct IP address.

Accepted Answer

The fault-tolerant nature of the DNS ensures that the service continues functioning even if one nameserver goes down. This is achieved through redundant nameservers that are configured to serve the same zone. If one nameserver becomes unavailable, the other nameservers can still respond to DNS queries and provide the necessary information.

Question 11

_____ is the language used to compose Web pages.

Accepted Answer

The answer of _____ is the language used to compose...

Question 12

A technique known as _____ uses a gateway that allows multiple devices to share a single IP address. This can be useful in organizations that have a limited number of conventional IP addresses.

Accepted Answer

The answer of A technique known as _____ uses a...

Question 13

Wall Street traders often choose a colocation facility with the goal to provide high-latency connectivity to their partners.

Accepted Answer

Wall Street traders choose a colocation facility to provide low-latency connectivity to their partners, aiming for the fastest possible transaction and data exchange speeds.

Question 14

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 15

The protocol used for exchange of mail between e-mail servers across the world is called _____.

Accepted Answer

The answer of The protocol used for exchange of mail...

Question 16

Computer programs making decisions without any human intervention conduct most U.S. stock trading.

Accepted Answer

High frequency trading algorithms use complex formulas and mathematical models to analyze market conditions and execute trades automatically without human intervention.

Question 17

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 is commonly referred to as TCP/IP, where TCP stands for Transmission Control Protocol and IP stands for Internet Protocol. Therefore, the best choice is E (Transmission Control Protocol).

Question 18

TCP and IP operate above http and the other application transfer protocols.

Accepted Answer

TCP/IP operates at a lower layer than HTTP and other application transfer protocols, providing the foundational communication services they rely on.

Question 19

The exploit referred to as __________ allowed hackers to leverage vulnerability in DNS software to redirect users to sites they did not request.
A) cybersquatting.
B) phishing.
C) an online imposture.
D) cache poisoning.
E) a distributed denial of request.

Accepted Answer

Cache poisoning is the security exploit that allows hackers to exploit vulnerabilities in DNS software to redirect users to sites they did not request. The attacker poisons the DNS cache by feeding it false information so that it associates malicious IP addresses with legitimate domain names. As a result, unsuspecting users are redirected to fake websites where their sensitive data can be stolen or compromised.

Question 20

Briefly describe how the DNS helps users communicate with each other.

Accepted Answer

The answer of Briefly describe how the DNS helps users...

Quiz 16: A Managers Guide to the Internet and Telecommunications