CCNA Service Provider Practice Test Results

Question 1
35% answer correctly
Given these four Class B networks: 172.104.0.0, 172.105.0.0, 172.106.0.0, 172.107.0.0, what is the supernet (CIDR) address that summarizes these four Class B networks?
172.104.0.0/12
172.104.0.0/13
172.104.0.0/14
172.104.0.0/11
172.104.0.0/15
Question 2
49% answer correctly
On Cisco IOS Switches, which port security violation mode results in frames from non-allowed MAC address being dropped, log message created, and SNMP trap sent?
protect
err-disabled
shutdown
restrict
log
Question 3
39% answer correctly
Which statement about 10/40/100 GigabitEthernet interface configuration on Cisco IOS XR is true?
The configuration supports only full-duplex operation.
The interface has no flow control configuration.
The range for MTU values is 64 bytes to 1518 bytes on the interface.
Use the negotiation auto command in interface configuration mode to enable link auto-negotiation to ensure that devices that share a link segment are automatically configured with the highest performance.