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35 Cards in this Set
- Front
- Back
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Two show commands to list two-code status of and interface |
show interfaces show interfaces description |
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The show command to list one-code status of an interface
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show interfaces status
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Which command implies if switch has determined speed and duplex manually or by autonegotiation? How?
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show interfaces status (a-100 or a-half)
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Agreed speed/duplex if one switch has disabled autonegotiation and the speed is not known through any mean?
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10Mbps/half duplex
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Agreed duplex if one switch has disabled autonegotiation and the speed is known ?
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Half duplex for speed 10 or 100 Mbps Full duplex for speed 1000Mbps
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Duplex used by interfaces over 1Gbps
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Always full duplex
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On Cisco switches configuration of both speed and duplex will ... IEEE autonegotiation on that port.
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Disable
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Show commands to list actual speed and duplex settings on an interface
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show interfaces
show interfaces status |
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If duplex setting does not match on both ends of a link, switch interface state will be?
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connected (up/up)
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A device receiving a frame whoes bits have changed values is a result of …
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Problems in physical transmission
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If a Cisco switch receives a frame whose bits have changed values, it discards the frame and lists it as ...
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CRC error
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A frame smaller than minimum size of 64 bytes in total is called …
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Runt
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What can cause a Runt?
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Collisions
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A frame larger than maximum size of 1518 bytes in total is called …
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Giant
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A total of many counters including CRC, runt, giants, frame overrun ,…
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Input Errors
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Received frames that did not pass the FCS math
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CRC
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In the output of show interfaces command ," Frame " counter means …
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Frames that have an illegal format i.e. ending with a partial byte
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A received frame ending with a partial byte can be caused by …
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Collision
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A collision that happens after 64th byte of the frame
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Late Collision
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Late collisions point to …
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Duplex mismatch
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If CRC errors grow but collisions counters do not, the problem can simply be…
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Interference on the cable
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Port security violation mode is Shutdown and a violation has occurred, Interface state is … and port security port status is …
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Interface state: err-disabled
Port security port status: secure-down |
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2 show commands to identify interfaces with enabled port security
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show running-config show port-security
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Port security violation mode is Restrict and a violation has occurred, Interface state is … and port security port status is …
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Interface state: connected
Port security port status: secure-up |
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Port security violation mode is Protect and a violation has occurred, Interface state is … and port security port status is …
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Interface state: connected
Port security port status: secure-up |
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Value of security violation counter when violation mode is Shutdown and security violation has occured
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1
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Value of security violation counter when violation mode is Restrict and security violation has occured
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Incrementing
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Value of security violation counter when violation mode is Protect and security violation has occured
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0
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If port security is configured on a port and the port status id secure-shutdown, what would the interface status be?
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err-disabled
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The command to show port status in port security
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show port-security interface f0/1
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In this port security mode, "show port-security interface" command almost shows nothing about whether the port is discarding traffic or not
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Protect
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In this port security mode, Syslog messages are not generated while a violation is occurred
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Protect
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In this port security mode, the interface is disabled for ALL traffics as a result of a violation.
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Shutdown
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In this VTP modes, vlan configuration will also appear in running-config and startup-config
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Transparent , disabled
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This show command lists both access and trunk ports
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show vlan id
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