Question 1

What IP address class does the address 128.0.31.50 belong to?

Accepted Answer

The IP address 128.0.31.50 belongs to Class B, which ranges from 128.0.0.0 to 191.255.255.255.

Question 2

Disabling network discovery in the Sharing and Discovery section of the Network and Sharing Center does not prevent you from accessing by UNC paths or being accessed by a UNC path.

Accepted Answer

Disabling network discovery only prevents your device from being visible to other devices on the network, but it does not block access through UNC paths as these typically require knowledge of the device name or IP address. Therefore, you can still access or be accessed through UNC paths even if network discovery is disabled.

Question 3

What protocol provides automatic IP address configuration?

Accepted Answer

DHCP (Dynamic Host Configuration Protocol) automatically assigns IP addresses to devices on a network. It is commonly used in homes and businesses to simplify network management and minimize the risk of IP address conflicts. DNS (Domain Name System) provides the translation of domain names to IP addresses, ARP (Address Resolution Protocol) finds the MAC address of a device on the network, and TCP (Transmission Control Protocol) is a reliable, connection-oriented protocol for transmitting data. However, none of these protocols provide automatic IP address configuration in the same way as DHCP.

Question 4

Computers assigned different network IDs can communicate without needing a router to deliver the packets between networks.

Accepted Answer

Computers with different network IDs belong to different networks, which means that they require a router to facilitate communication between them. Without a router, the packets sent by one computer will not be able to reach the computer on the other network.

Question 5

By default,every installed service and protocol is bound to every network connection.

Accepted Answer

By default, every installed service and protocol is bound to every network connection. This means that the service or protocol is available on all network interfaces and can be accessed by any device connected to those interfaces.

Question 6

Which of the following is NOT a reason why some devices can't be placed on the network map?

Accepted Answer

All devices that are connected to the network can be placed on the network map, regardless of their membership status. Therefore, option D is not a valid reason for a device not appearing on the network map. Options A, B, and C are all valid reasons, as they can prevent devices from being discovered or recognized by the network.

Question 7

Which command is useful for troubleshooting the routing topology of a complex network and finding the bottleneck between a computer and a destination network?

Accepted Answer

The tracert command is useful for troubleshooting the routing topology of a complex network and finding the bottleneck between a computer and a destination network. It displays the route taken by packets through the network and identifies the routers that cause delays or drops. In contrast, nslookup is used for DNS troubleshooting, ping for testing connectivity, and arp for resolving IP addresses to MAC addresses.

Question 8

If multiple default gateways are assigned to a computer (such as in a multihomed server),what determines which default gateway will be used?

Accepted Answer

The metric is used to determine the best default gateway to use when there are multiple options. The metric is a value assigned to each default gateway that represents the cost of using that gateway. The lower the metric, the more preferred the gateway is. The operating system will use the default gateway with the lowest metric value.

Question 9

You are troubleshooting a network issue a user is having.After having changed his network adapter to static addressing,he can no longer reach the internet.However,the machine resolves Internet names to IP addresses.Observe the adapter's configuration below,and determine the problem.
IP Address: 172.31.20.103
Subnet: 255.255.255.0
DNS Server: 172.31.20.251
Gateway address: 172.31.19.254

Accepted Answer

The gateway address is outside of the user's subnet (172.31.19.254) while the user has an IP address of 172.31.20.103 with a subnet mask of 255.255.255.0. In this case, the user cannot reach the internet because the gateway is not on the same network segment as the user. Therefore, the correct solution is to change the gateway address to an address that is within the user's subnet, such as 172.31.20.1.

Question 10

What is the network ID of the address 172.31.200.120,given the subnet mask of 255.255.255.0?

Accepted Answer

To determine the network ID, we need to perform a bit-wise AND operation between the IP address and subnet mask.

IP address: 172.31.200.120
Subnet mask: 255.255.255.0

Convert both to binary:

IP address: 10101100.00011111.11001000.01111000
Subnet mask: 11111111.11111111.11111111.00000000

Performing the bit-wise AND:

10101100.00011111.11001000.01111000 (IP address)
&
11111111.11111111.11111111.00000000 (Subnet mask)
------------------------------------------
10101100.00011111.11001000.00000000 (Network ID)

Convert the resulting binary back to decimal:

10101100.00011111.11001000.00000000

Network ID: 172.31.200.0

Therefore, the correct answer is C) 172.31.200.

Question 11

One of the below IP address / subnet mask pairs is invalid;find the invalid answer.

Accepted Answer

The answer of One of the below IP address /...

Question 12

One of IPv6's drawbacks is that it does not have built-in security,unlike IPv4.

Accepted Answer

This statement is false. IPv6 actually includes built-in security features such as IPsec, which provides authentication, confidentiality, and integrity for network traffic.

Question 13

Using this tool,you can create network connections,view the status of existing connections,and troubleshoot network problems.

Accepted Answer

The Network and Sharing Center allows users to create and view network connections, as well as troubleshoot network problems. It is a comprehensive tool for managing network connections.

Answer: B 
 Netstat can be used to view the status of existing network connections, as well as to troubleshoot network issues. However, it may not be as comprehensive as the Network and Sharing Center, which is why it is a secondary choice.

Therefore, the best choice is C, followed by B as a secondary option.

Question 14

What subnet mask would correspond to a CIDR notation of /24?

Accepted Answer

In CIDR notation, /24 indicates that the first 24 bits out of 32 bits in the IP address are used for the network address, leaving the remaining 8 bits for the host address. The subnet mask with 24 consecutive 1's (or 8 consecutive 0's) is 255.255.255.0, which corresponds to Choice A.

Question 15

You have created a subnetted network and left 4 bits for host IDs.How many hosts can you have per subnet?

Accepted Answer

The answer of You have created a subnetted network and...

Question 16

When a computer learns another computer's MAC address,it keeps the address in its...

Accepted Answer

The MAC address of another computer is learned through the Address Resolution Protocol (ARP), and the computer stores this information in its ARP cache, which is a table that associates IP addresses with their corresponding MAC addresses.

Question 17

What does the "Client for Microsoft Networks" item in a network adapter's connection properties provide?

Accepted Answer

The "Client for Microsoft Networks" item in a network adapter's connection properties provides the ability for the machine to connect to Windows Shared resources by using Server Message Block (SMB).

Answer: B 
 While network connectivity is necessary for communication with DNS servers running Windows, the "Client for Microsoft Networks" item specifically provides SMB connectivity to Windows shared resources, and does not directly impact DNS communication.

Answer: C 
 The "Client for Microsoft Networks" item does not provide an FTP client.

Answer: D 
 While sharing of folders over the network may be enabled through various network settings, the "Client for Microsoft Networks" item specifically provides the ability to connect to Windows shared resources using SMB.

Question 18

When a computer or router must deliver a packet of data to another computer or router in the same network,ARP can be used to request the destination device's MAC address.

Accepted Answer

This statement is correct. ARP (Address Resolution Protocol) is used to map an IP address to a corresponding MAC address in order to deliver packets within a network. When a device needs to send a packet to another device on the same network, it sends an ARP request to ask for that device's MAC address. Once the MAC address is determined, the packet can be addressed and delivered to the destination device.

Question 19

Why is the address 172.31.255.255 with a subnet mask of 255.255.255.0 invalid as a host ID?

Accepted Answer

The answer of Why is the address 172.31.255.255 with a...

Question 20

A router is...

Accepted Answer

A router is a network device that forwards communication packets from one network to another. It is responsible for directing network traffic between different networks and ensures that data is sent to its correct destination. The router examines packet headers to determine the next hop for the data, using information in its routing table. This makes it possible for computers on different networks to communicate with each other. B, C, and D do not accurately describe the function of a router.

Quiz 8: Introduction to Windows Networking