Peter, a customer, states that since the new firewall has been installed, he has not been able to send email. Which of the following ports on the firewall should be checked?
A. 21
B. 25
C. 110
D. 443
CompTIA exam questions
Peter, a customer, states that since the new firewall has been installed, he has not been able to send email. Which of the following ports on the firewall should be checked?
A. 21
B. 25
C. 110
D. 443
Which of the following network devices filters traffic of many different protocols based on a predetermined set of rules established by a system administrator?
A. Proxy
B. Switch
C. Firewall
D. Router
Which of the following network devices uses NAT to convert private IP addresses into public IP addresses?
A. NAS
B. Firewall
C. Hub
D. Bridge
Which of the following should be configured on a wireless router to block port 3389?
A. MAC filtering
B. Firewall
C. Port triggering
D. Port forwarding
A customer states that since the new firewall has been installed, the customer has not been able to send email. Which of the following ports on the firewall should be checked?
A. 21
B. 25
C. 110
D. 443
Which of the following devices utilizes PoE technology? (Select TWO).
A. Wireless router
B. VoIP
C. UTM appliance
D. Firewall
E. IP camera
Which of the following network devices would BEST be used to replace a hub?
A. Firewall
B. Modem
C. Switch
D. Bridge
A user has received an error message when connecting to the wireless network. The error indicates the IP address being used by the user’s system is already in use. A DHCP server is used on the network. After having the user disconnect from the wireless network, the technician is still able to ping the user’s IP address. Which of the following is MOST likely the cause?
A. The user has a statically assigned IP address in the DHCP server scope.
B. The system’s local firewall is blocking SYN/ACK traffic from the DHCP server.
C. The DHCP server’s scope has been exhausted and no additional IP addresses are available.
D. The user is also connected to the wired network with a LAN cable.
Which of the following provides the LEAST network security?
A. Firewall
B. Router
C. Hub
D. Switch