單項選擇題

While deploying a new switch， you accidently connect ports 3/12 and 3/18 together， creating a loop. STP detected it and placed port 3/18 in blocking mode. Why did STP not place port 3/12 in blocking mode instead？（）

A. Port 3/12 was already up and forwarding before the loop was created.
B. Port priority is based on lowest priority and lowest port number.
C. You connected the wire on port 3/18 last.
D. None of the above， it is purely random.

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單項選擇題

After applying a new ACL on a device， its CPU utilization rose significantly and many messages startingwith "%SEC-6-IPACCESSLOG" appeared on the Syslog server.What can be done to resolve this situation？（）

A.Increase memory allocation for ACLs.
B.Remove all entries from the ACL and use a single permit ip any any statement.
C.Remove the log keyword from each ACL entry.
D.Reboot the device after the ACL has been applied.

單項選擇題

You deployed new fibers in your network to replace copper spans that were too long. While reconnecting the network， you experienced network problems because you reconnected wrong fibers to wrong ports. What could you do to prevent this type of problem in the future， particularly when connecting and reconnecting fiber pairs？（）

A. Only use fiber in pairs.
B. Configure root guard on your switches.
C. Do not use fiber but use copper.
D. Configure UDLD to prevent one-way link conditions.

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While deploying a new switch， you accidently connect ports 3/12 and 3/18 together， creating a loop. STP detected it and placed port 3/18 in blocking mode. Why did STP not place port 3/12 in blocking mode instead？ （）

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After applying a new ACL on a device， its CPU utilization rose significantly and many messages startingwith "%SEC-6-IPACCESSLOG" appeared on the Syslog server.What can be done to resolve this situation？（）

While deploying a new switch， you accidently connect ports 3/12 and 3/18 together， creating a loop. STP detected it and placed port 3/18 in blocking mode. Why did STP not place port 3/12 in blocking mode instead？（）

After applying a new ACL on a device， its CPU utilization rose significantly and many messages startingwith "%SEC-6-IPACCESSLOG" appeared on the Syslog server.What can be done to resolve this situation？（）