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