Cisco Certified Network Associate CCNA Practice Test 4

Cisco CCNA Practice Quiz

1 / 30

A router receives a packet for a network it has no route to. What happens next?

2 / 30

A user reports that their connection drops intermittently. You check the switch logs and see multiple interface flaps. What is the most likely cause?

3 / 30

A network engineer configures an ACL to block HTTP traffic to a web server but notices users can still access it. What is the most likely reason?

4 / 30

Which spanning tree protocol provides the fastest convergence?

5 / 30

A network engineer needs to configure a WAN link between two routers using IPv6. Which protocol should be used for dynamic routing?

6 / 30

A network administrator notices a large number of MAC addresses being learned on a single switch port. What security measure should be implemented to prevent this?

7 / 30

A router learns multiple routes to the same network from different routing protocols. Which route will it install in the routing table?

8 / 30

You configure a Layer 3 EtherChannel between two switches using four interfaces. After configuration, only one interface is forwarding traffic. What is the most likely cause?

9 / 30

A company uses a DHCP server to assign IP addresses to clients. Occasionally, users report connectivity issues even though they have an IP address. What is the most likely cause?

10 / 30

A network administrator wants to configure a router to forward packets to a backup default gateway if the primary link fails. Which technology should be used?

11 / 30

Which protocol prevents routing loops in a distance-vector network?

12 / 30

What command disables an interface on a Cisco router?

13 / 30

What type of NAT translates multiple internal addresses to a single public IP?

14 / 30

Which Cisco proprietary protocol is used to bundle multiple physical links into one logical link?

15 / 30

What is the administrative distance of a directly connected route?

16 / 30

What is a major difference between RIP and OSPF?

17 / 30

Which technology reduces the size of broadcast domains in a network?

18 / 30

What is the main advantage of using port security on a switch?

19 / 30

Which command displays active TCP connections on a Cisco router?

20 / 30

Which protocol provides IPv6 address autoconfiguration without a DHCP server?

21 / 30

A network engineer configures switchport mode trunk on a port, but VLAN traffic is still not passing. What is the most likely reason?

22 / 30

What is the purpose of BPDU Guard in Spanning Tree Protocol?

23 / 30

A router is configured with router ospf 1, but no networks are advertised. What is the issue?

24 / 30

What happens if a switch receives a frame with an unknown unicast destination?

25 / 30

What is the purpose of HSRP in a network?

26 / 30

A PC in VLAN 20 can’t reach a PC in VLAN 30. Both VLANs exist on the switch, and devices have correct IPs. What is the most likely cause?

27 / 30

A network engineer needs to configure a switch with SSH access for secure remote management. What must be configured first?

28 / 30

A router has two equal-cost paths to a destination network via OSPF. What will it do by default?

29 / 30

A network administrator wants to prevent VLAN hopping attacks. Which two actions should be taken? (Choose two)

30 / 30

You configure a new VLAN on a switch, but hosts within that VLAN cannot communicate. The switch is connected to a router with a trunk link. What is the most likely issue?

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