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What protocol primarily uses port 22 in cloud computing?
a. Telnet
b. FTP
c. SSH
d. SMTP
Answer: c. SSHsanfoundry+1
Which port is the default for Secure Shell (SSH) connections in server management?
a. 21
b. 22
c. 23
d. 25
Answer: b. 22cbtnuggets+1
What is the main purpose of SSH over port 22 in cloud environments?
a. Unsecured login
b. File encryption only
c. Secure remote administration
d. Broadcast messaging
Answer: c. Secure remote administrationinfinitivehost+2
What security risk is most closely associated with leaving port 22 open without hardening?
a. Phishing
b. Brute force attacks
c. DDoS
d. ARP spoofing
Answer: b. Brute force attackssslinsights+1
To which OSI layer is port 22 most directly associated?
a. Application
b. Data link
c. Presentation
d. Physical
Answer: a. Applicationsanfoundry+1
Which of the following is true about port 22 in most default firewall configurations?
a. It is always blocked
b. It is open for SSH service
c. It is used for HTTP
d. It is only used in IPv6
Answer: b. It is open for SSH servicecloudflare+1
For which of the following tasks is SSH via port 22 commonly used?
a. Sending email
b. Secure file transfer
c. DNS resolution
d. Load balancing
Answer: b. Secure file transfernetcomlearning+2
Changing SSH to a non-standard port from port 22 can help mitigate which risk?
a. SQL Injection
b. Port scanning attacks
c. Data integrity loss
d. Slow connections
Answer: b. Port scanning attacksns3edu+1
What is the port number for Telnet?
a. 20
b. 21
c. 22
d. 23
Answer: d. 23cbtnuggets+1
Which is NOT a best practice for securing port 22 in cloud deployments?
a. Disable password authentication
b. Use strong SSH keys
c. Allow unrestricted access
d. Limit login attempts
Answer: c. Allow unrestricted accessinfinitivehost+1
What command is typically used to initiate an SSH connection over port 22 in Linux?
a. telnet [host]
b. connectssh [host]
c. ssh [host]
d. ftp [host]
Answer: c. ssh [host]ipcisco+1
Which cloud service scenario would most likely use port 22?
a. S3 data retrieval
b. EC2 remote instance administration
c. CloudFront CDN delivery
d. RDS database queries
Answer: b. EC2 remote instance administrationcloud.google+1
Port 22 uses which transport layer protocol?
a. UDP
b. ICMP
c. TCP
d. SCTP
Answer: c. TCPipcisco+1
Which action can help protect port 22 against brute force attacks in cloud settings?
a. Enable root login
b. Use default settings
c. Enforce key-based authentication
d. Disable firewalls
Answer: c. Enforce key-based authenticationsslinsights+1
Which is the default TCP port for SSH service in AWS EC2 instances?
a. 80
b. 443
c. 3389
d. 22
Answer: d. 22cloud.google+1
If port 22 is blocked by a firewall, which ability is lost?
a. Secure remote login
b. Web browsing
c. Email reception
d. DNS resolution
Answer: a. Secure remote logincloudflare+1
What is the effect of misconfiguring port 22 security groups in cloud environments?
a. Slower VM performance
b. Unauthorized admin access
c. Excessive bandwidth
d. Faulty DNS
Answer: b. Unauthorized admin accessinfinitivehost+1
Which is a secure alternative to password authentication on port 22?
a. Telnet
b. Public key authentication
c. Anonymous login
d. Shared secrets
Answer: b. Public key authenticationsslinsights+1
Default firewall rules in cloud platforms should do what for port 22?
a. Allow access only from trusted IPs
b. Allow access from the world
c. Block all outbound
d. Permit UDP only
Answer: a. Allow access only from trusted IPscloudflare+1
What log file commonly records SSH access attempts on port 22 on Linux?
a. /etc/passwd
b. /var/log/secure
c. /home/ssh/log
d. /tmp/log
Answer: b. /var/log/secureinfinitivehost+1
Which attack is most commonly attempted on cloud servers with open port 22?
a. Man-in-the-middle
b. Brute force login
c. Watering hole
d. Cookie theft
Answer: b. Brute force loginsslinsights+1
Which key-based file does SSH use for authentication over port 22?
a. id_dsa
b. id_ecdsa
c. id_rsa
d. All of the above
Answer: d. All of the aboveinfinitivehost+1
Why should access to port 22 be tightly controlled in cloud administration?
a. It is never required
b. Allows remote root access
c. Used for website hosting
d. Required for email
Answer: b. Allows remote root accessnetcomlearning+1
Which protocol does NOT run on port 22?
a. SCP
b. SFTP
c. Telnet
d. SSH
Answer: c. Telnetsanfoundry+1
In AWS, what is a recommended method for controlling SSH access to EC2 instances?
a. Use wide-open security groups
b. Restrict security groups to known IPs
c. Block all TCP
d. Use HTTP proxies
Answer: b. Restrict security groups to known IPscloud.google+1
Which setting can further secure port 22 on a cloud VM?
a. Enable root login directly
b. Disable password authentication
c. Permit all networks
d. Use default credentials
Answer: b. Disable password authenticationsslinsights+1
What does SSH over port 22 encrypt by default?
a. Session only
b. Login data only
c. All transmitted data
d. Only file transfers
Answer: c. All transmitted datanetcomlearning+1
Why might a cloud provider recommend changing the default SSH port from 22?
a. To ensure faster login
b. To reduce attack exposure
c. To standardize networking
d. To allow all traffic
Answer: b. To reduce attack exposurens3edu+1
Which protocol uses port 22 for secure file transfer?
a. FTP
b. SFTP
c. HTTP
d. RDP
Answer: b. SFTPipcisco+1
Which network scanning tool is often used to identify open port 22?
a. ipconfig
b. netstat
c. Nmap
d. curl
Answer: c. Nmaphackingarticles+1
What risk arises if port 22 is open and secured only by weak passwords?
a. Traffic congestion
b. Privilege escalation
c. Account lockout
d. Unauthorized access
Answer: d. Unauthorized accessinfinitivehost+1
A “Connection refused” error on port 22 means:
a. Firewall blocks port 22
b. Wrong credentials
c. Hardware failure
d. DNS resolution failed
Answer: a. Firewall blocks port 22cloudflare+1
Which of the following is NOT mitigated by securing port 22?
a. Eavesdropping on SSH
b. Brute force login
c. Open SMTP relay
d. Credential theft via SSH
Answer: c. Open SMTP relaycloudflare+1
In cloud security, what should be monitored regularly for port 22 usage?
a. Uptime checks
b. Logins and access logs
c. Email sent
d. Disk health
Answer: b. Logins and access logssslinsights+1
If a user cannot SSH to a cloud VM, which setting should be checked first?
a. Port 22 allowed in firewall
b. NTP status
c. DHCP lease
d. RAM usage
Answer: a. Port 22 allowed in firewallsap+1
SSH tunneling via port 22 can be used for:
a. Secure web traffic
b. Secure email delivery
c. Both a and b
d. None of the above
Answer: c. Both a and bcbtnuggets+1
What is the result of having port 22 open to the world in public cloud?
a. More control
b. Increased attack risk
c. Faster logins
d. Automated backup
Answer: b. Increased attack riskinfinitivehost+1
Which SSH configuration change reduces direct root access risk on port 22?
a. PermitRootLogin no
b. PasswordAuthentication yes
c. Port 80 use
d. AllowTcpForwarding yes
Answer: a. PermitRootLogin nosslinsights+1
What tool is commonly used in security tests against cloud SSH port 22?
a. Hydra
b. Filezilla
c. Chrome
d. Outlook
Answer: a. Hydrahackingarticles+1
What action is recommended after changing SSH port on a cloud VM?
a. Restart SSH service
b. Upgrade OS
c. Disable DNS
d. None
Answer: a. Restart SSH servicens3edu+1
What does SFTP over port 22 allow?
a. Unencrypted data transfer
b. Secure file transfer
c. Web browsing
d. Email reading
Answer: b. Secure file transfercbtnuggets+1
Why is it NOT recommended to expose port 22 to the internet in cloud VMs?
a. DDoS
b. Increases attack surface
c. Slower downloads
d. Blocks email
Answer: b. Increases attack surfaceinfinitivehost+1
How can cloud admins restrict port 22 access to corporate offices only?
a. Use VPN or allow office IP addresses
b. Disable SSH
c. Open port 22 globally
d. Set up HTTP
Answer: a. Use VPN or allow office IP addressescloudflare+1
Using SSH keys over port 22 eliminates which risk?
a. Man-in-the-middle attacks
b. Brute force password guessing
c. DNS spoofing
d. DDoS
Answer: b. Brute force password guessingsslinsights+1
Which is true of SSH over port 22 in Google Cloud?
a. It is not supported
b. Supports secure VM administration
c. Used only for DNS
d. Only used for storage
Answer: b. Supports secure VM administrationcloud.google+1
In penetration testing, what method is used to try breaking into SSH over port 22?
a. Brute force login attempts
b. ICMP pings
c. DNS queries
d. ARP flood
Answer: a. Brute force login attemptshackingarticles+1
What should a cloud user do before disabling port 22 SSH access to a VM?
a. Set alternate remote access
b. Lower firewall
c. Delete root user
d. Reinstall OS
Answer: a. Set alternate remote accessinfinitivehost+1
What is the effect of enabling 2FA (two-factor authentication) for SSH login via port 22?
a. No security benefit
b. Blocks all access
c. Adds extra authentication
d. Removes encryption
Answer: c. Adds extra authenticationsslinsights+1
A common port scan result showing “open” on port 22 suggests what?
a. SSH service is running
b. DNS is reachable
c. Database service
d. HTTP server
Answer: a. SSH service is runningsanfoundry+1
What log message indicates repeated unauthorized attempts on port 22?
a. “Failed password for invalid user”
b. “Disk space low”
c. “CPU overheating”
d. “Service stopped”
Answer: a. “Failed password for invalid user”infinitivehost+1

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