network chapter 8
802.1Q
What IEEE standard specifies how VLAN information appears in frames and how switches interpret that information?
set native-vlan-id
What command will set the native VLAN on a Juniper switch port?
It shares VLAN database information amongst switches that participate.
What does the VLAN Trunk Protocol (VTP) do?
by device manufacturer
What is NOT one of the ways in which networks are commonly segmented?
65,534
What is the maximum number of host IP addresses that can exist in a Class B network?
255.255.224.0
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?
It is inserted between the source address and the Ethernet type field.
When an 802.1Q tag is added to an Ethernet frame, where is it placed?
VLAN 1001
When dealing with a Cisco switch, what is NOT one of the pre-established VLANs?
A smaller organization or business.
When using IPv6, what would a /64 network likely be assigned to?
The largest IPv6 subnet capable of being created is a /64
Which of the following statements regarding IPv6 subnetting is NOT accurate?
Disable auto trunking and move native VLANs to unused VLANs.
Which of the following suggestions can help prevent VLAN hopping attacks on a network?
router-on-a-stick
Which of the following terms is commonly used to describe a VLAN configuration in which one router connects to a switch that supports multiple VLANs?
On the switch that is known as the stack master.
With VTP, where is the VLAN database stored?
show vlan
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?
10.3.0.0/19
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?
True
A /24 CIDR block is equivalent to a 255.255.255.0 subnet mask.
172.16.0.0
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?
4 bytes
How large is the 802.1Q tag that is added to an Ethernet frame when using VLANs?
256
How many /64 subnets can be created within a /56 prefix?
65,536 subnets
How many subnets can a /48 site prefix support?
True
IPv6 addressing does not utilize classful addressing, therefore every IPv6 address is classless.
The last four blocks of the address.
If the EUI-64 standard is used, what part of an IPv6 address is affected?
The site prefix or global routing prefix.
In an IPv6 address, what do the first four blocks or 64 bits of the address represent?
True
In order to identify the transmissions that belong to each VLAN, a switch will add a tag to Ethernet frames that identifies the port through which they arrive at the switch.
False
A native VLAN mismatch occurs when two access ports that are connected to each other are both tagging traffic with different VLAN IDs.
1022
A network with 10 bits remaining for the host portion will have how many usable host addresses?
255.255.255.192
A network with a CIDR notation of /26 would have what subnet mask?
/21
A subnet of 255.255.248.0 can be represented by what CIDR notation?
False
All that is needed to provide communication between two VLANs is a DHCP relay agent.
192.168.18.64
An IP address of 192.168.18.73/28 has what network ID?
trunk port
An interface that manages traffic from multiple VLANs is known by what term?
False
An unmanaged switch can still support the creation of VLANs, provided there is an interface for configuration.
True
By default, the native VLAN is the same as the default VLAN.
24
By default, when using classful addressing, how many bits exist in the host portion of a Class A address?
True
Network segmentation at Layer 2 of the OSI model is accomplished using VLANs.
False
Network segmentation decreases both performance and security on a network.
100013
On a Cisco switch, what would the security association identifier be for VLAN 13?
ip helper-address
On certain Cisco products, what command can be used to create and send helper messages that support several types of UDP traffic, including DHCP, TFTP, DNS, and TACACS+?
False
Only Class B and Class C networks can be subnetted.
magic number
Subtracting an interesting octet value from 256 yields what number?
