Cloud Connectivity Quiz: Troubleshooting Connectivity (Cloud+)

1. Which protocol is used to verify end-to-end cloud connectivity and measure round-trip time?

HTTP

ICMP

TCP

UDP

2. Your cloud endpoint is unreachable. You need to verify if the server is actually running. Which command is most direct?

Curl or wget to test HTTP response

Nmap to scan open ports

Ping to check ICMP reachability

Dig to query DNS

3. A cloud-to-cloud inter-region connection fails sporadically. Which cloud service is most likely responsible?

Storage service

Virtual network peering or interconnect

Database service

Backup service

4. Your on-premises firewall blocks outbound cloud traffic on port 443. What protocol is affected?

HTTP

HTTPS

SSH

FTP

5. Which tool displays active network connections and listening ports on a cloud instance?

Top

Netstat or ss

Df

Ps

6. A cloud ExpressRoute or dedicated connection shows high latency. What is the most likely culprit?

Insufficient cloud disk space

Network congestion or misconfigured QoS

Outdated cloud OS patch

Incorrect instance type

7. Your cloud instance has correct routing, but DNS queries fail. Which record type should you verify?

CNAME only

A record and nameserver configuration

MX record

SPF record

8. What does MTU stand for in cloud network troubleshooting?

Maximum Transmission Unit

Multi-Tenant Utility

Managed Tunnel Upgrade

Multicast Traffic Update

9. A VPN client cannot establish a tunnel to the cloud gateway. Which is the best first diagnostic step?

Reinstall the VPN client

Verify gateway accessibility with ping

Clear browser cache

Restart cloud services

10. Your cloud load balancer shows healthy instances, but users report connection failures. What should you check?

Instance CPU usage

Network ACLs and routing rules

Cloud storage permissions

User account privileges

11. A user reports slow cloud application performance. Which tool best diagnoses network latency between client and cloud server?

Ping

Ifconfig

Nslookup

Arp -a

12. A hybrid cloud link experiences jitter. What is the primary cause?

Inconsistent network latency

Insufficient cloud CPU

Outdated SSL certificates

Wrong time zone settings

13. Your cloud instance cannot reach an external API. Which network setting should you verify first?

NAT gateway or public IP configuration

Instance memory allocation

Storage encryption settings

Backup schedule

14. A cloud security group rule is too restrictive. What is the immediate impact on connectivity?

Increased latency

Connection timeout or refused

Data corruption

DNS resolution failure

15. Which command traces the route packets take to a cloud endpoint?

Netstat

Tracert (Windows) or traceroute (Linux)

Ipconfig

Arp

16. A cloud-to-on-premises hybrid connection shows 50% packet loss. What should you investigate?

Cloud storage quotas

Network interface errors and link quality

Database connection pool size

Application cache settings

17. Your firewall blocks legitimate cloud API traffic. What is the best troubleshooting step?

Disable the firewall entirely

Review firewall logs and whitelist required ports

Restart the cloud gateway

Reset network configuration

18. Which network protocol is most commonly used for secure cloud VPN tunnels?

PPTP

IPsec

GRE

L2TP only

19. A cloud instance cannot resolve an internal domain name. Which service should you check first?

NTP service

DNS resolver configuration

DHCP server

Load balancer settings

20. Your organization's cloud VPN connection drops intermittently. What is the most common cause?

Insufficient bandwidth allocation

MTU mismatch between endpoints

Incorrect routing table entries

DNS cache corruption

Cloud Connectivity Quiz: Can You Fix the Link?