Question 1

What type of VLAN automatically receives all untagged frames?
A)Default VLAN
B)Native VLAN
C)Mirrored VLAN
D)Untagged VLAN

Accepted Answer

The Native VLAN is the VLAN that is automatically assigned to all untagged frames. It is important to configure the correct Native VLAN to avoid security and connectivity issues. The other options, Default VLAN, Mirrored VLAN, and Untagged VLAN, are not valid VLAN types.

Question 2

With VTP,the VLAN database is stored on a switch known as which option below?
A)root bridge
B)stack master
C)trunk root
D)vlan server

Accepted Answer

B

Question 3

What IEEE standard specifies how VLAN information appears in frames and how switches interpret that information?
A)802.1c
B)802.1Q
C)802.1V
D)802.1d

Accepted Answer

IEEE standard 802.1Q specifies how VLAN information appears in frames and how switches interpret that information.

Question 4

Which network type allows a vNIC to access a network directly using the host machine's NIC?
A)bridged mode
B)NAT mode
C)host only mode
D)direct mode

Accepted Answer

Bridged mode allows the virtual machine's network adapter (vNIC) to connect directly to the physical network adapter of the host machine, giving the virtual machine access to the network as if it were a separate physical machine. This allows the virtual machine to obtain its own IP address and communicate directly with other devices on the network.

Question 5

A network with the subnet mask 255.255.255.0 would have what CIDR block?
A)/20
B)/24
C)/28
D)/32

Accepted Answer

CIDR block is determined by counting the number of 1s in the subnet mask. In this case, the subnet mask 255.255.255.0 has 24 1s, which means it corresponds to a /24 CIDR block. Therefore, the best choice is B.

Question 6

Only Class B and Class C networks can be subnetted.

Accepted Answer

Both Class B and Class C networks can be subnetted.

Question 7

In an IPv6 address,the first 64 bits of the address are known as what?
A)host prefix
B)equipment ID
C)routing prefix
D)prefix mask

Accepted Answer

The first 64 bits of an IPv6 address are known as the routing prefix, which is assigned by the Internet Service Provider (ISP) and identifies the network portion of the address. The remaining 64 bits are used for host addressing. The equipment ID and prefix mask are not correct terms for this part of the IPv6 address.

Question 8

Network segmentation decreases both performance and security on a network.

Accepted Answer

Network segmentation is a best practice in network security that involves dividing a network into smaller subnetworks or segments. By segmenting a network, organizations can improve security by controlling access to resources and limiting the impact of a security breach. Additionally, network segmentation can improve performance by reducing network congestion and optimizing traffic flow. Therefore, network segmentation does not decrease performance and security on a network, but it improves them.

Question 9

Because Layer 2 switches use MAC addresses for communication,and each port is assigned a MAC address,VLANs are considered a Layer 2 solution for segmenting a network.

Accepted Answer

Layer 2 switches use MAC addresses to forward traffic within a LAN, and VLANs are a Layer 2 solution because they operate on this same layer. Each port on a Layer 2 switch is assigned a unique MAC address, and VLANs can be created to segment a network based on these addresses.

Question 10

Telnet and SSH are known as what type of management system?
A)out-of-band
B)in-band
C)side-band
D)external-band

Accepted Answer

Telnet and SSH are considered in-band management systems because they allow for the management of devices over the network through the same interfaces that network traffic flows through.

Question 11

The use of virtualization allows for isolation of each guest system such that problems on one system do not affect another system.

Accepted Answer

Virtualization allows for the creation of multiple guest systems that are isolated from each other. This means that any problems or issues on one system will not affect the other guest systems. Therefore, the statement is true.

Question 12

The first iteration of STP was defined in what IEEE standard below?
A)802.3d
B)802.1d
C)802.11s
D)802.1c

Accepted Answer

The first iteration of STP (Spanning Tree Protocol) was defined in IEEE 802.1d standard. This standard was first published in 1990 and has since been revised several times (latest revision is 802.1Q-2018). 802.3d, 802.11s, and 802.1c are not related to STP, but instead, define standards for Ethernet MAC, wireless mesh networking, and path control respectively.

Question 13

Which of the following is not a valid reason for using virtualization?
A)increase performance
B)save money by purchasing few machines
C)simplify backups and recovery
D)efficient use of resources

Accepted Answer

Virtualization primarily aims to save money by reducing the need for physical hardware, simplify backups and recovery, and make more efficient use of resources. Increasing performance is not a direct benefit of virtualization; in fact, it can introduce overhead that slightly reduces performance compared to running on bare metal.

Question 14

How can VLAN hopping attacks be prevented on a network?
A)Install an additional switch to isolate traffic.
B)Disable auto trunking and move native VLANs to unused VLANs.
C)Install a router to process the untagged traffic on the VLAN.
D)Use MAC address filtering.

Accepted Answer

Disabling auto trunking and moving native VLANs to unused VLANs is the best choice to prevent VLAN hopping attacks. This prevents an attacker from accessing the native VLAN and hopping to other VLANs. Installing an additional switch to isolate traffic or using MAC address filtering are not effective measures to prevent VLAN hopping attacks. Installing a router to process untagged traffic on the VLAN is also not a recommended solution as it can potentially introduce more security vulnerabilities.

Question 15

The Spanning Tree Protocol stipulates that on any bridge,only one root port,which is the bridge's port that is closest to the root bridge,can forward frames toward the root bridge.

Accepted Answer

This statement is true as one of the key functions of the Spanning Tree Protocol is to prevent loops in a network by selecting a single root bridge and ensuring that all other bridges have one designated root port towards the root bridge. Only the root port on each bridge is allowed to forward frames towards the root bridge to avoid forwarding loops.

Question 16

A single switch can manage traffic belonging to several VLANs on a single interface,by configuring which option on the interface?
A)A router
B)A trunk port
C)An access port
D)A VLAN port

Accepted Answer

The option to configure on the interface would be a trunk port, which allows traffic from multiple VLANs to be transmitted over a single interface. This is achieved through the use of VLAN tagging, which identifies the VLAN to which each packet belongs. A trunk port enables the switch to manage traffic belonging to several VLANs on a single interface.

Question 17

In order to allow communication between VLANs for exchange of data,what must be used?
A)a firewall
B)a switch
C)a router
D)a root bridge

Accepted Answer

VLANs are used to segment a network logically, and communication between them can only occur through a Layer 3 device such as a router. Routers are the only devices that can break a broadcast domain, allowing traffic to flow between VLANs. While firewalls and switches have their own functions in networking, they are not specifically designed to allow communication between VLANs. A root bridge is a term used in spanning tree protocol, which is not directly related to VLAN communication.

Question 18

Which supernet mask below would allow an organization to cover the following networks with one routing entry: 192.168.0.0/24,192.168.1.0/24,192.168.2.0/24,192.168.3.0/24?
A)255.255.255.0
B)255.255.252.0
C)255.255.255.128
D)255.255.240.0

Accepted Answer

The subnet mask 255.255.252.0 is a supernet mask that covers 4 Class C networks: 192.168.0.0/22. This means that the first 22 bits in the IP address are the network address, and the remaining 10 bits are used for the host address. Therefore, with this supernet mask, the four networks (192.168.0.0/24,192.168.1.0/24,192.168.2.0/24,192.168.3.0/24) can be combined under one routing entry.

Question 19

STP selects the root bridge based on which parameter?
A)port number
B)bridge ID (BID)
C)bridge version number (BVN)
D)software revision code

Accepted Answer

STP selects the root bridge based on the lowest Bridge ID (BID) number. The Bridge ID is made up of a priority value and the MAC address of the switch. The root bridge is the switch with the lowest BID, and all other switches must choose the path that leads to the root bridge when calculating their spanning tree. Port number, bridge version number, and software revision code are not factors in selecting the root bridge.

Question 20

A network with 6 bits remaining for the host portion will have how many usable hosts?
A)254
B)126
C)62
D)30

Accepted Answer

With 6 bits for the host portion, there are 2^6 = 64 total addresses. Subtracting 2 for the network and broadcast addresses leaves 62 usable hosts.

Quiz 10: Network Segmentation and Virtualization

What type of VLAN automatically receives all untagged frames?

With VTP,the VLAN database is stored on a switch known as which option below?

What IEEE standard specifies how VLAN information appears in frames and how switches interpret that information?

Which network type allows a vNIC to access a network directly using the host machine's NIC?

A network with the subnet mask 255.255.255.0 would have what CIDR block?

Only Class B and Class C networks can be subnetted.

In an IPv6 address,the first 64 bits of the address are known as what?

Network segmentation decreases both performance and security on a network.

Because Layer 2 switches use MAC addresses for communication,and each port is assigned a MAC address,VLANs are considered a Layer 2 solution for segmenting a network.

Telnet and SSH are known as what type of management system?

The use of virtualization allows for isolation of each guest system such that problems on one system do not affect another system.

The first iteration of STP was defined in what IEEE standard below?

Which of the following is not a valid reason for using virtualization?

How can VLAN hopping attacks be prevented on a network?

The Spanning Tree Protocol stipulates that on any bridge,only one root port,which is the bridge's port that is closest to the root bridge,can forward frames toward the root bridge.

A single switch can manage traffic belonging to several VLANs on a single interface,by configuring which option on the interface?

In order to allow communication between VLANs for exchange of data,what must be used?

Which supernet mask below would allow an organization to cover the following networks with one routing entry: 192.168.0.0/24,192.168.1.0/24,192.168.2.0/24,192.168.3.0/24?

STP selects the root bridge based on which parameter?

A network with 6 bits remaining for the host portion will have how many usable hosts?