CCNA Practice Quiz (2026) Welcome to CCNA Practice Quiz (2026) Quiz score and correct answers provided with end of test review. 1. What bridge priority setting is NOT permitted on a Cisco switch? 1 0 4096 32768 28672 None 2. What LACP mode is required on at least one switch interface to dynamically negotiate trunking? passive desirable active on auto None 3. What interface counter errors are caused by duplex mismatch? CRC UDLD giants MTU mismatch None 4. What is the difference between virtual machines (VM) and containerization? virtual machines each have a separate operating system containers share a hypervisor and an operating system containers are slower than virtual machines virtual machines enable more applications per physical server virtual machines are less secure than containers None 5. What network service does an SDN controller provide? routing table lookup build network tables ACL filtering network address translation None 6. Refer to the exhibit. What route will DC-1 select for packets with destination IP address 172.16.1.15? S* 0.0.0.0/0 [1/0] D 172.16.1.0/24 [90/3072] O 172.16.1.0/27 [110/2] S 172.16.1.0/28 [1/0] None 7. What routing protocol has the lowest administrative distance? IS-IS OSPF EIGRP eBGP RIP None 8. What is the default violation mode for switch port security? shutdown restrict protect disabled None 9. What interface on a wireless controller is responsible for CAPWAP tunnel addressing? virtual interface service port ap-manager interface dynamic interface None 10. What OSPF command would advertise 192.168.1.0/26 route on a network interface? network 192.168.1.0 0.0.0.31 area 0 network 192.168.1.0 0.0.0.7 area 0 network 192.168.1.0 0.0.0.63 area 0 network 192.168.1.0 0.0.0.15 area 0 None 11. What ACL only permits Telnet traffic between client 10.1.1.1 and server 10.1.2.1? access-list 100 permit ip host 10.1.1.1 host 10.1.2.1 eq telnet access-list 100 permit tcp 10.1.1.1 0.0.0.255 host 10.1.2.1 eq 23 access-list 100 permit tcp host 10.1.1.1 0.0.0.0 any eq 23 access-list 100 permit tcp host 10.1.1.1 host 10.1.2.1 eq 23 None 12. What are three primary advantages of VLANs? broadcast domains minimize bandwidth usage and multicast traffic fewer collisions domains create larger broadcast domains for scalability improves network security with traffic segmentation VLANs prevent broadcast storms increased scalability to support large multi-segment data center deployments 13. What attribute values does Cisco route selection algorithm prefer? (select three) route with shortest prefix match route with longest prefix match route with highest metric route with lowest metric route with lowest administrative distance route with highest administrative distance 14. What subnet mask enables at least 40 host IP addresses per subnet? 255.255.255.240 (/28) 255.255.255.192 (/26) 255.255.255.224 (/27) 255.255.255.248 (/29) None 15. What is required to negotiate dynamic trunking between connected neighbor switches? auto mode enabled on neighbor switch ports desirable mode enabled on at least one switch port active mode enabled on at least one switch port auto mode enabled on at least one switch port auto mode or active mode enabled on neighbor switch ports None 1 out of 15 Time's up
