CCNA Service Provider Practice Test Results

Question 1
43% answer correctly
Which Cisco IOS XR command is involved in enabling remote access?
RP/0/RSP0/CPU0:PE1(config)# vrf default
RP/0/RSP0/CPU0:PE1(config)# telnet ipv4 server max-servers 20
RP/0/RSP0/CPU0:PE1(config)# line console 0
RP/0/RSP0/CPU0:PE1(config)# router static
RP/0/RSP0/CPU0:PE1(config)# username CISCO password LAZ
Question 2
63% answer correctly
What does a transparent LAN switch use to build its CAM table?
BPDU messages exchanged with neighbor bridges
STP messages exchanged with neighbor bridges
Analysis of the source MAC address of incoming frames on the bridge ports
Dynamic routing protocol updates from neighbor bridges
Question 3
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?
172.104.0.0/15
172.104.0.0/14
172.104.0.0/12
172.104.0.0/13
172.104.0.0/11