Question 1

Cloud computing is decreasing as hardware resources become cheaper because acquisition of resources is slow and not scalable.

Accepted Answer

Cloud computing is increasing as hardware resources become cheaper because it allows for scalability and faster acquisition of resources.

Question 2

A virtual private network:
A) is a password-controlled network for private users rather than the general public.
B) is a private network within a public network.
C) is an Internet facility that links user sites locally and around the world.
D) defines the path to a facility or file on the web.
E) none of the above is true.

Accepted Answer

A virtual private network (VPN) is a private network within a public network such as the Internet. It allows users to securely and privately access and transmit data as if they were connected to the private network, even if they are physically located elsewhere. It is a common tool for remote workers, travelers, and businesses that need to protect sensitive information. Option A is describing a private network with password control, but it does not necessarily involve a VPN. Option C is describing the Internet itself and not specific to VPNs. Option D is describing a URL path, which is not related to VPNs. Option E is incorrect as B is the correct answer.

Question 3

The intermediary in a smurf attack is also a victim.

Accepted Answer

In a smurf attack, the attacker sends a large number of ICMP Echo Request messages to a broadcast address, and these messages are then broadcast to all devices on the network. The source IP address of these messages is spoofed to make it appear like they are coming from the victim's IP address. As a result, the intermediary devices unwittingly amplify the attack by sending a flood of ICMP Echo Reply messages back to the victim's IP address. Although the intermediary devices are unwittingly participating in the attack, they are still victims because they are being used as pawns by the attacker.

Question 4

The most frequent use of EDI is in making vendor payments.

Accepted Answer

While EDI can be used for vendor payments, it has many other uses such as purchase orders, invoices, and shipment notices.

Question 5

A ping is used to test the state of network congestion and determine whether a particular host computer is connected and available on the network.

Accepted Answer

A ping is a network utility tool that sends a small packet of data to a specified network address (host computer) and measures the response time. The response time and success/failure of the ping can be used to test the state of network congestion and determine whether the host computer is connected and available on the network.

Question 6

In a hierarchical topology, network nodes communicate with each other via a central host computer.

Accepted Answer

In a hierarchical topology, nodes are organized in a tree-like structure with a central host computer at the top or root of the structure. Nodes communicate with each other by sending messages to the central host, which then relays the message to the appropriate node.

Question 7

Cloud computing is the technology that has unleashed virtualization.

Accepted Answer

Virtualization technology predates cloud computing and serves as a foundational technology that enables the creation of cloud computing environments by allowing multiple virtual machines to run on a single physical hardware.

Question 8

To physically connect a workstation to a LAN requires a
A) file server
B) network interface card
C) multiplexer
D) bridge

Accepted Answer

A network interface card (NIC) is required to physically connect a workstation to a LAN. The NIC allows the workstation to access the LAN and communicate with other devices on the network. The other options (file server, multiplexer, and bridge) may be components of a LAN, but they are not required to physically connect a workstation to a LAN.

Question 9

HTML controls web browsers that access the web.

Accepted Answer

HTML (Hypertext Markup Language) is a markup language used for creating and structuring content on the web, not for controlling web browsers.

Question 10

Network protocols fulfill all of the following objectives except
A) facilitate physical connection between network devices
B) provide a basis for error checking and measuring network performance
C) promote compatibility among network devices
D) result in inflexible standards

Accepted Answer

Network protocols do not result in inflexible standards, but rather provide a standardized and agreed-upon way for devices to communicate with each other. The other options are all objectives fulfilled by network protocols.

Question 11

EDI is the inter-company exchange of computer processible business information in standard format.

Accepted Answer

EDI (Electronic Data Interchange) is indeed the inter-company exchange of computer processible business information in standard format, usually used for transactions such as purchase orders, invoices, and shipping notices.

Question 12

Polling is one technique used to control data collisions.

Accepted Answer

Polling is a technique used to control data collisions in which a coordinating device sends a request to a device on a network to transmit data. This helps to prevent multiple devices from trying to transmit data simultaneously and causing collisions.

Question 13

Packet switching
A) combines the messages of multiple users into one packet for transmission. At the receiving end, the packet is disassembled into the individual messages and distributed to the intended users.
B) is a method for partitioning a database into packets for easy access where no identifiable primary user exists in the organization.
C) is used to establish temporary connections between network devices for the duration of a communication session.
D) is a denial of service technique that disassembles various incoming messages to targeted users into small packages and then reassembles them in random order to create a useless garbled message.

Accepted Answer

Packet switching is a method used in networking to send data in small packets over a network, establishing temporary connections between devices for the duration of a communication session.

Question 14

A certification authority is an independent and trusted third party empowered with responsibility to vouch for the identity of organizations and individuals engaging in Internet commerce.

Accepted Answer

This definition of a certification authority is accurate.

Question 15

A ping is an Internet maintenance tool that is used to test the state of network congestion and determine whether a particular host computer is s and available on the network.

Accepted Answer

A ping sends a small packet of data to a host computer and measures the round-trip time it takes for the packet to reach the host and be returned. By analyzing the results of the ping, a network administrator can determine whether the host is online and responding to network traffic. This can be useful for troubleshooting network issues and identifying areas where congestion or other network problems may be affecting performance.

Question 16

Protocols
A) facilitate the physical connection between the network devices.
B) synchronize the transfer of data between physical devices.
C) provide a basis for error checking and measuring network performance.
D) all of the above.

Accepted Answer

Protocols provide a way for physical devices to connect, synchronize data transfer, and check for errors or measure performance. Therefore, all of the above options are correct.

Question 17

The more individuals that need to exchange encrypted data, the greater the chance that the key will become known to an intruder. To overcome this problem, private key encryption was devised.

Accepted Answer

Private key encryption is also known as symmetric key encryption, where the same key is used for both encryption and decryption. It is not a solution for the problem of key distribution in public key encryption.

Question 18

A ping signal is used to initiate
A) URL masquerading
B) digital signature forging
C) Internet protocol spoofing
D) a smurf attack
E) none of the above is true

Accepted Answer

A smurf attack is a type of denial-of-service attack that uses ping signals to flood a target system with ICMP echo requests, overwhelming it.

Question 19

Which topology has a large central computer with direct connections to a periphery of smaller computers? Also in this topology, the central computer manages and controls data communications among the network nodes.
A) star topology
B) bus topology
C) ring topology
D) client/server topology

Accepted Answer

The description matches the characteristics of a star topology where a central node (the hub or switch) has direct connections to the peripheral nodes (workstations or devices) and manages the network communication.

Question 20

What do you call a system of computers that connects the internal users of an organization that is distributed over a wide geographic area?
A) LAN
B) decentralized network
C) multidrop network
D) Intranet

Accepted Answer

An intranet is a system of interconnected computers that provides access to proprietary information to the internal users of an organization. It is designed to facilitate communication, collaboration, and information sharing among employees and departments within an organization. An intranet is restricted to users within the organization and is not accessible to the public.

Quiz 12: Electronic Commerce Systems

Cloud computing is decreasing as hardware resources become cheaper because acquisition of resources is slow and not scalable.

A virtual private network:

The intermediary in a smurf attack is also a victim.

The most frequent use of EDI is in making vendor payments.

A ping is used to test the state of network congestion and determine whether a particular host computer is connected and available on the network.

In a hierarchical topology, network nodes communicate with each other via a central host computer.

Cloud computing is the technology that has unleashed virtualization.

To physically connect a workstation to a LAN requires a

HTML controls web browsers that access the web.

Network protocols fulfill all of the following objectives except

EDI is the inter-company exchange of computer processible business information in standard format.

Polling is one technique used to control data collisions.

Packet switching

A certification authority is an independent and trusted third party empowered with responsibility to vouch for the identity of organizations and individuals engaging in Internet commerce.

A ping is an Internet maintenance tool that is used to test the state of network congestion and determine whether a particular host computer is s and available on the network.

Protocols

The more individuals that need to exchange encrypted data, the greater the chance that the key will become known to an intruder. To overcome this problem, private key encryption was devised.

A ping signal is used to initiate

Which topology has a large central computer with direct connections to a periphery of smaller computers? Also in this topology, the central computer manages and controls data communications among the network nodes.

What do you call a system of computers that connects the internal users of an organization that is distributed over a wide geographic area?