VLANs
What is the default VLAN on a Cisco switch?
VLAN 1
A network switch forwards frames using information found at which OSI layer?
The data link layer
What EtherChannel negotiation protocol belongs exclusively to Cisco?
Port Aggregation Protocol (PAgP)
Switches forward data using destination MAC Addresses. Routers forward data using what?
IP Addresses
What command displays all VLANs configured on a switch, including the VLAN ID, name, status, and assigned ports?
show vlan brief
What VLAN ID range is used for normal range VLANs?
1 through 1005
When data arrives at a switch port, what is this action called?
Frame ingress
Up to how many physical interfaces can be bundled together into one logical port-channel interface?
Eight
What type of device is required to split a Layer 2 broadcast domain into smaller, separate broadcast domains?
A Layer 3 device such as a router or multilayer switch
What happens to untagged traffic that arrives on an 802.1Q trunk port?
It is placed into the native VLAN
VLAN IDs 1002 through 1005 are unusable and are permanently reserved for what legacy technologies?
Token Ring and Fiber Distributed Data Interface
What is another name for the MAC address table on a switch?
Content Addressable Memory (CAM)
Which command forwards DHCP broadcast requests to a DHCP server located on a different subnet from the clients?
ip helper-address
With Router-on-a-Stick inter-VLAN routing, each VLAN's default gateway is provided by what?
A subinterface created on a single physical router interface
What happens to ports assigned to a VLAN if that VLAN is deleted before the ports are moved to another VLAN?
The ports become inactive
Where are normal range VLAN configurations stored on a Cisco switch?
In flash memory in a file named vlan.dat
A frame with a destination address of all ones (FF:FF:FF:FF:FF:FF) represents what kind of traffic?
Broadcast traffic
Enabling PortFast on a switch interface has what effect?
The port bypasses the STP listening and learning states and becomes active immediately
What kind of port connects a Layer 2 Switch to a Router or Multilayer Switch?
Trunk port or trunk link
What command is needed on a Switch in order to make it a Trunk port?
Switchport mode trunk
Assigning the native VLAN to a dedicated, unused ID like VLAN 99 or VLAN 999 primarily protects against what threat?
VLAN hopping attacks such as double-tagging
What is the maximum end-to-end delay allowed for VoIP traffic to maintain clear call quality?
Less than 150 milliseconds
What is the purpose of the switchport nonegotiate command on an access port?
It disables Dynamic Trunking Protocol to help prevent switch spoofing attacks
What must a router have in each VLAN in order for it to forward traffic between VLANs?
Subinterface with an IP address
What two commands are needed on a Switch to assign a port to VLAN 10
Switchport mode access
Switch access vlan 10