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What address does a switch use for implementing port security?
source mac address
What is a valid reason for a switch to deny port access to new devices when port security is?
The denied MAC address are statically configured on the port
When port security is enabled a switch port uses the default violation mode of until specifically configured to use a different violation mode?
Yes, By default port security is disabled on a Cisco switch. If it is enabled the default violation mode is shutdown with a maximum MAC address count of 1. Even if port-security is enabled it will not place a port into the shutdown state until either MAC address sticky or a static MAC address is configured on the port.
What is the valid reason for a switch to deny port access to new devices when port security is enabled?
The denied MAC address are statically configured on the port
When would a switch record multiple entries for a single switch port in its MAC address table?
A switch would record multiple entries for a single switch port in its MAC address table if it does not contain the Mac address of a particular destination in the address table. It will broadcast to all ports besides the port where entry comes from.
When port security is used on a switch which violation mode will cause an snmp trap to be sent and traffic to be dropped when the number of secure MAC address for a port is reached?
Port security is used on a switch and the number of secure MAC addresses for a port is reached, the violation mode that will typically cause an SNMP trap to be sent and traffic to be dropped is the "Shutdown" or "Protect" violation mode.
Which two statements describe the operation of an access layer ethernet switch choose two?
The source MAC address within a frame is used by the switch to associate a port with that MAC address. Frames are directed by the switch from one port to another based on the destination MAC address within the frame.
How an Ethernet switch sends a frame out a single port to a receiver?
The switch learns the MAC address of the device connected to a port during port initialization. It will then send data out the port based upon the destination MAC address as specified the the packet header.
Where is the ip address on a cisco switch for telnet?
The Cisco switches I have seen don't have an IP address by default. You have to connect to the switch with a console cable - one that connects to the console port on the switch, and to the serial port on the computer - and do some initial configuration, including the IP address.The Cisco switches I have seen don't have an IP address by default. You have to connect to the switch with a console cable - one that connects to the console port on the switch, and to the serial port on the computer - and do some initial configuration, including the IP address.The Cisco switches I have seen don't have an IP address by default. You have to connect to the switch with a console cable - one that connects to the console port on the switch, and to the serial port on the computer - and do some initial configuration, including the IP address.The Cisco switches I have seen don't have an IP address by default. You have to connect to the switch with a console cable - one that connects to the console port on the switch, and to the serial port on the computer - and do some initial configuration, including the IP address.
Which Cisco switch feature is used to limit the number of valid MAC addresses that a switch associates with a switchport?
port security
Is there a way to configure a cisco switch in order to avoid this kind of attack?
Yes, there should be, but it would vary depending on the security features of the switch port - google "switchport port-security" for examples. Once this is set, the switch won't forward packets to addresses outside of the specified range.
Why would port security be enabled on a switch?
this allows you to give access to authorized personnel's only
