CTS1168C Chapter: 6 Configuring Network Security

An IP address is composed of a network ID and which of the following?

A host ID Correct. An IP address is composed of two parts: a network ID followed by a host ID.

Which of the following is the CIDR notation of 255.255.255.0?

/24 Correct. /24 is the CIDR notation of 255.255.255.0.

Which of the following IP addresses are Class B addresses? (Choose all that apply.)

131.107.10.150 189.10.14.1 Class A addresses go from 1-126 (127 is used for the loopback address). Class B addresses go from 128-191, and Class C addresses are from 192-223.

Which of the following IP addresses are Class A addresses? (Choose all that apply.)

65.102.17.9 10.14.100.240 Class A addresses go from 1-126 (127 is used for the loopback address). Class B addresses go from 128-191, and Class C addresses are from 192-223.

When Windows 10 can communicate with a domain controller, the network connection is automatically placed in which location category?

A domain network Correct. When Windows 10 can communicate with a domain controller, the network connection is automatically placed in the domain network location category.

Which of the following is responsible for enabling communications between Windows 10 and the network device(s) in your computer?

A network driver Correct. A network driver is responsible for enabling communication between Windows 10 and the network device(s) in your computer.

Which location type is used when a computer is connected as part of a peer-to-peer network in a trusted location?

A private network Correct. A private network is used when a computer is connected as part of a peer-to-peer network in a trusted location.

Which location type is used when a computer is connected in an untrusted public location, such as an airport?

A public network Correct. A public network is the default location type for a new network and is used when the computer is connected in an untrusted public location, such as an airport.

If Windows 10 is configured to use dynamic IP configuration and is unable to contact a DHCP server, the default action is to use which type of address?

APIPA Correct. If Windows 10 is configured to use dynamic IP configuration and is unable to contact a DHCP server, the default action is to use an APIPA address.

Identify the network security type commonly used by public Wi-Fi networks.

No authentication Correct. Public Wi-Fi networks use the no authentication security type. Credentials are not required to connect to this type of network.

Which of the following can be used to configure a dynamic IPv4 address in a Windows 10 computer? Automatic assignment The netsh command-line tool Static configuration The Set-NetIPAddress PowerShell cmdlet

Automatic assignment Correct. Automatic IPv4 configuration is done via DHCP servers. The automatic assignment of an IP address is referred to as a dynamic configuration.

You are the network administrator for a large organization with many laptop users who go on the road. Your organization would like to start moving away from users connecting in by VPN to get data. They have decided that they want to start moving the entire IT department to the cloud. What version of Active Directory can they start using?

Azure Active Directory Azure is Microsoft's cloud-based Active Directory subscription. Azure is great if you don't want to deal with the worries of managing and maintaining a server room and all of the hardware and it's also great for accessing Active Directory from anywhere in the world.

You have been hired as a TCP/IP contractor for an organization who wants to redo their network. The company currently uses a 192.168.x.x class but they are projecting a hiring of over 500 new employees this year. They currently have 175 employees. They do not want to buy a new TCP/IP class. What can you do to help them? (Choose all that apply.)

Change the network to 10.0.0.0/8. Change the network to 172.16.0.0/16. You have to use either a Class A or Class B. Class C addresses can only handle 254 users. 10.x.x.x and 172.16.x.x are both able to handle the 675 users and they are both internal private address schemes that anyone can use.

You are the network administrator for your company. Your service provider has assigned you the network address 192.168.154.0. You have been granted the entire range to use. What class of address have you been assigned?

Class C Because the first octet starts with 192, it's a Class C. If the first octet starts with 1-126, it's a Class A. 128-191 is a Class B, and 192-223 is a Class C.

Xervent Corp. uses the domain name "www.Xervent.com" and the IP address 172.225.120.40 to provide employees access to its services. Several employees report intermittent connectivity issues. When the network administrator troubleshoots the issue, the communication to the remote host works with the IP address but fails when the name is used.Identify the cause of the connectivity issue.

Domain name server resolution Correct. If communications to a remote host works when using the IP address but not with the name, then the issues is with the DNS resolution.

Which of the following is an automated mechanism used to assign IP addresses, subnet masks, default gateways, DNS servers, WINS servers, and other IP configuration information to network devices?

DHCP Correct. DHCP servers support an automated mechanism used to assign IP addresses, subnet masks, default gateways, DNS servers, WINS servers, and other IP configuration information to network devices.

Which of the following protocols is used for resolving host names to IP addresses?

DNS Correct. The most common use for DNS is to resolve host names to IP addresses.

As a network administrator, Joshua is helping a nearby library set up a local network. He manually assigns an IPv6 address, as well as a default gateway and DNS server, to each Windows 10 computer using the Network and Sharing Center.Which of the following is true of this configuration?

Each computer in the network is assigned a static IP address. Correct. The IPv6 address is configured statically. To configure a static address, a network interface's IPv6 properties must be configured to a specific IPv6 address.

A user cannot access a server in the domain. After troubleshooting, you determine that the user cannot access the server by name but can access the server by IP address. What is the most likely problem?

Incorrectly defined DNS server The DNS server turns a hostname into an IP address so you can connect to a machine by the machine name. If you can connect to a machine by using the TCP/IP address but not the name, DNS is the issue.

Which of the following allows you to configure the security settings for each location type differently?

Network location awareness Correct. Network location awareness allows you to configure the security settings for each location differently.

You are hired by a small company to set up a network. The company sells pocket watches and they have only five employees. They can't afford a server and client access licenses. What type of network can you set up for them?

Set up all Windows 10 clients on a workgroup. Create a new Workgroup and add all the employees to the Workgroup. You don't want to use a HomeGroup because even though it's five users, you need to make sure that permissions are setup properly so that users can't look at data of other users. Because they are never going to get any larger, there is no reason to have them use any version of Active Directory or Windows Server.

Which protocol is included with Windows 10 for network communication?

TCP/IP Correct. TCP/IP is included with Windows 10 for network communication, such as file sharing or accessing the Internet.

Which of the following is an updated version of TCP/IPv4 with a larger address space and additional features?

TCP/IPv6 Correct. TCP/IPv6 is an updated version of TCP/IPv4 with a larger address space and additional features.

Which of the following obtains IP configuration information when you connect a Windows 10 computer to a cable modem? - The Dynamic Host Configuration Protocol - A wireless wide area network service - A digital subscriber line modem - The Point-To-Point Protocol over Ethernet

The Dynamic Host Configuration Protocol Correct. Windows 10 by default obtains IP configuration using the Dynamic Host Configuration Protocol when a cable modem is used to connect to the Internet.

Lara works as a system administrator in a small start-up. The computers in her office are configured to use dynamic IP configuration. One day, the computers had intermittent Internet access, and as the administrator, she was trying to troubleshoot the issue. While the computers could not access the Internet, they were able to communicate with each another. Upon investigating, it was noted that the computers were connected to the 169.274.0.0/16 network.What do you think caused the connectivity issue? - The IP addresses uses by the computers were manually entered. - The computers could not contact the DHCP server. - The computers were sending requests to the wrong DNS server. - The default gateway configured was incorrect.

The computers could not contact the DHCP server. Correct. If the computers are connected to the 169.274.0.0/16 network, it implies that they are using APIPA addresses. An APIPA address is usually used when a computer is not able to connect to the DHCP server.

Martha sets up a local peer-to-peer network at her home office. She has five Windows 10 computers connected to the network. The computers were not able to access the Internet. Upon troubleshooting, she noticed that the packets sent from the computers were blocked by an IPv6-aware router; however, she was able to send ping requests from one computer to another.Identify the issue with the network configuration. The TCP/IP IPv6 protocol on each computer was nonfunctional. The network IDs of the computers were not the same. The computers were assigned link-local unicast addresses. The IPv6 settings on each computer connected to the network were incorrect.

The computers were assigned link-local unicast addresses. Correct. A computer with a link-local unicast address can communicate with another computer with a link-local unicast address; however, it cannot connect to the Internet or access a remote server as data sent from these addresses is blocked by IPv6-aware routers.

Sasha is freelance graphic designer. She often works out of a café close to her house. The café provides free network connection for regular customers. When she tries to connect to the network using her Windows 10 laptop, she is prompted to confirm if she wants to make her laptop visible on the network. ​ Assuming this is not the first time Sasha is connecting to the network, why do you think Windows 10 prompts her with this query? ​

The network location awareness service in Sasha's laptop has been disabled. Correct. The network location awareness service allows Windows 10 to configure a computer based on the list of remembered networks. However, if the service is disabled or stopped, Windows 10 will assume a network to be a new network and prompt the user to configure the visibility of the computer.

Which IP utility is used to display response times for every router on the path to the destination?

Tracert Correct. The tracert command shows response times for every router on the path to the destination.

Mika is on a flight to visit her parents. Before the takeoff, she is instructed to turn off her devices or put them in Airplane mode. After she gets off the flight and enters the airport, she notices that her Windows 10 laptop does not detect the public network.What do you think is preventing the laptop from connecting to the network?

Wi-Fi and Bluetooth are disabled on the laptop. Correct. Wi-Fi and Bluetooth are likely disabled if Airplane mode is still activated on her laptop. This will prevent the laptop from detecting available public networks.

You have two DHCP servers on your network. Your computer accidentally received the wrong IP and DNS server configuration from a DHCP server that was misconfigured. The DHCP server with the incorrect configuration has been disabled. What commands could you use to release and renew your computer's DHCP configuration? (Choose two.)

ipconfig /renew ipconfig /release The ipconfig /release and the ipconfig /renew commands will allow your machine to receive a new IP address from the DHCP server.

You have a Windows 10 machine that needs to have a static TCP/IP address. You assign the IP address to the machine and you now want to register the computer with DNS. How can you do this from the Windows 10 machine?

pconfig /registerdns Ipconfig /registerdns will automatically register the Windows 10 machine with the DNS server. The registration will include the Windows 10 machine name and the IP address.

Which of the following commands will you use to check the basic connectivity between your computer and a computer with the IP address 192.168.1.100? You need to send a minimum of six requests.

ping 192.168.1.100 -n Correct. This command can be used to send requests to the computer to check the connectivity. n specifies the number of requests to send. Example: ping 192.168.1.100 -n 6 sends six requests.