Ch 8 Network

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What subnet mask can be used to segment the 172.16.0.0 network to allow for a minimum of 6 subnets while maximizing the number of hosts per subnet?

255.255.224.0

A network with a CIDR notation (prefix) of /26 would have what subnet mask?

255.255.255.192

What is the maximum number of host IP addresses that can exist in a Class B network?

65,534

When using IPv6, what would a /64 network likely be assigned to?

A smaller organization or business.

If the EUI-64 standard is used, what part of an IPv6 address is affected?

The last four blocks of the address.

In an IPv6 address, what do the first four blocks or 64 bits of the address represent?

The site prefix or global routing prefix.

You are working on a Cisco switch and need to learn what VLANs exist on the switch. Which command will list the current VLANs recognized by the switch?

show vlan

A /24 CIDR block (prefix) is equivalent to a 255.255.255.0 subnet mask.

true

By default, the native VLAN is the same as the default VLAN.

true

IPv6 addressing does not utilize classful addressing, therefore every IPv6 address is classless.

true

A native VLAN mismatch occurs when two access ports that are connected to each other are both tagging traffic with different VLAN IDs.

false

An unmanaged switch can still support the creation of VLANs, provided there is an interface for configuration.

false

Network segmentation decreases both performance and security on a network.

false

Which of the following terms is commonly used to describe a VLAN configuration in which one router interface connects to a switch and serves as the gateway for multiple VLANs?

router-on-a-stick

In order to identify the transmissions that belong to each VLAN, a switch will add a tag to Ethernet frames that identifies the VLAN through which they arrive at the switch.

true

Given a host IP address of 172.16.1.154 and a subnet mask of 255.255.254.0, what is the network ID for this host?

172.16.0.0

An IP address of 192.168.18.73/28 has what network ID?

192.168.18.64

How many subnets can a /48 site prefix support?

65,536 subnets

When an 802.1Q tag is added to an Ethernet frame, where is it placed?

It is inserted between the source address and the Ethernet type field.

With VTP, where is the VLAN database stored?

On the switch that is known as the stack master, configured as a VTP server.

An interface that manages traffic from multiple VLANs is known by what term?

aggregation port

A subnet of 255.255.248.0 can be represented by what CIDR notation?

/21

You have been tasked with the creation and design of a network that must support a minimum of 5000 hosts. Which network accomplishes this goal?

10.3.0.0/19

A network with 10 bits remaining for the host portion will have how many usable host addresses?

1022

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

802.1Q

Which of the following statements regarding IPv6 subnetting is NOT accurate?

The largest IPv6 subnet capable of being created is a /64.

Which of the following suggestions can help prevent VLAN hopping attacks on a network?

Disable auto trunking and move native VLANs to unused VLANs.

How large is the 802.1Q tag that is added to an Ethernet frame when using VLANs?

4 bytes

What does the VLAN Trunk Protocol (VTP) do?

It shares VLAN database information amongst switches that participate.

What is NOT one of the ways in which networks are commonly segmented?

by device manufacturer

All that is needed to provide communication between two VLANs is a DHCP relay agent.

false

Only Class B and Class C networks can be subnetted.

false

Network segmentation at Layer 2 of the OSI model is accomplished using VLANs.

true


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