Question 1

A problem with virtual networks is that data transmitting through them cannot be encrypted and therefore is not secure.

Accepted Answer

This statement is false. Data transmitting through virtual networks can be encrypted and made secure using various encryption protocols and security measures.

Question 2

What is the name of the 32-bit or 128-bit number that is used to identify a device on a network?

Accepted Answer

An IP address is a unique numerical identifier used to identify devices on a network. It can be either a 32-bit or 128-bit number, depending on whether it is an IPv4 or IPv6 address. Port numbers and protocol numbers are used to specify the type of communication between devices, while IP version refers to the specific version of the Internet Protocol being used (i.e. IPv4 or IPv6).

Question 3

How is the network portion and the host portion of an IP address identified?

Accepted Answer

The subnet mask is used to identify the network portion and the host portion of an IP address. The bits that are set to 1 in the subnet mask represent the network portion, while the bits set to 0 represent the host portion.

Question 4

What command can be used to display IP addresses assigned to all network connections on a system?

Accepted Answer

The ipconfig command displays IP addresses assigned to all network connections on a system. This command is available on Windows operating systems and is a useful tool for troubleshooting network connectivity issues. The other options (A, B, and D) are not relevant to displaying IP addresses on a system.

Question 5

What wireless networking radio frequency yields faster speeds but offers shorter range?

Accepted Answer

5 GHz radio frequency yields faster speeds with less interference but offers shorter range as it cannot penetrate obstacles easily.

Question 6

Packets are delivered to a single node on a network when using what type of IPv6 address?

Accepted Answer

Unicast address is used to deliver packets to a single node on a network. Anycast address is used to deliver packets to the nearest available node in a group of nodes, and multicast address is used to deliver packets to a group of nodes subscribed to a particular multicast address. Default gateway address is used for sending packets outside the local network.

Question 7

The User Datagram Protocol (UDP) guarantees delivery of data to its destination.

Accepted Answer

UDP does not provide any guarantee of delivery. It is a best-effort protocol, meaning that packets may be lost or arrive out of order.

Question 8

When using static IP addressing, software automatically configures the network connection on each device.

Accepted Answer

Static IP addressing requires manual configuration of each device's network connection settings.

Question 9

The current release of SMB is CIFS, also called SMB2.

Accepted Answer

CIFS, also known as SMB1, was the first version of SMB protocol. SMB2 is the current version, also known as SMB.

Question 10

How are IP addresses available to the Internet classified?

Accepted Answer

Public IP addresses are the ones available to the Internet, allowing devices to communicate globally.

Question 11

What TCP port is utilized by an SSH server listening for connections?

Accepted Answer

TCP port 22 is the default port utilized by an SSH server to listen for incoming connections.

Question 12

Originally developed by IBM, what protocol is used by Windows to share files and printers on a network?

Accepted Answer

Server Message Block (SMB) is the protocol used by Windows to share files and printers on a network.

Question 13

What command can be used to flush the local DNS cache on a Windows computer?

Accepted Answer

The correct command to flush the local DNS cache on a Windows computer is "ipconfig /flushdns". Option A, "nslookup -f", is not a valid command to flush the local DNS cache. Option C, "dns dump", does not exist as a command. Option D, "service dnscache restart", is a command that may work on Linux, but not on Windows.

Question 14

What type of IP address is configured by a server when a device first initiates a connection to the network?

Accepted Answer

When a device first initiates a connection to the network, it is typically configured to receive a dynamic IP address from a Dynamic Host Configuration Protocol (DHCP) server. This allows for efficient use of IP addresses and simplifies network administration, as devices can be easily moved or replaced without disrupting the network's addressing scheme. Default, static, and configured IP addresses are all possible, but not the default choice for a newly connected device.

Question 15

The solution for securing private data traveling over a public network, such as the Internet, is the use of what type of network?

Accepted Answer

The best choice for securing private data traveling over a public network is to use a virtual private network (VPN). A VPN creates a secure and encrypted connection between the user's device and a remote server, enabling the user to access the Internet as if they were connected to a private network. This ensures that any data transmitted over the Internet is secure and protected from eavesdropping or interception by unauthorized parties. A public encrypted network could provide encryption, but it wouldn't be private as it would be open to anyone. A private encrypted network is a good option, but it would require the user to have their own private network infrastructure, which may not be feasible for many individuals or organizations. A virtual prevention network is not a type of network and does not exist.

Question 16

What type of device can be used to block unwanted traffic initiated from the Internet and can also restrict Internet access from an internal network?

Accepted Answer

A firewall is the best choice for blocking unwanted traffic from the internet and restricting internet access from an internal network. A hub and switch are not designed for this purpose. A VPN provides secure remote access to a network, but it does not block or restrict internet access.

Question 17

What protocol makes a connection, checks whether the data is received, and resends it if it is not?

Accepted Answer

TCP (Transmission Control Protocol) is a reliable protocol that establishes a connection between two devices and makes sure that data is sent and received successfully. It uses error-checking mechanisms and resend capabilities to ensure that data is not lost or corrupted during transmission. UDP (User Datagram Protocol), on the other hand, is a connectionless protocol that does not provide reliability or error checking. Therefore, TCP is the best choice for ensuring reliable data transmission. IP (Internet Protocol) is responsible for routing packets through the network, while DNS (Domain Name System) is used for resolving domain names to IP addresses.

Question 18

If the computer you are using is a laptop that moves from one network to another, what tab can be used to configure a secondary configuration, such as a static IP if a DHCP server cannot be reached?

Accepted Answer

The Alternate Configuration tab in the network settings allows you to configure a secondary configuration, such as a static IP, to be used if the computer cannot connect to a DHCP server. This is particularly useful for laptops that move between networks frequently.

Question 19

The Telnet protocol encrypts transmitted data, which therefore cannot be read by others on the network.

Accepted Answer

Telnet protocol does not encrypt transmitted data and can be read by others on the network. It is recommended to use secure protocols such as SSH instead.

Question 20

What functions as the name of a wireless network?

Accepted Answer

SSID stands for Service Set Identifier and is the name given to a wireless network. It is what users select when connecting to a Wi-Fi network. A MAC address is a unique identifier assigned to a network interface controller for use as a network address in communications within a network segment. A secure key is a password or passphrase used for authentication to secure a network. A Network ID is an identifier for a network, usually used in the context of computer networks, such as a local area network (LAN) or a wide area network (WAN).

Quiz 14: Connecting To and Setting Up a Network