Part 1.4

Given a scenario where a web server is not responding on port 80, which protocol and port combination should you check to troubleshoot standard HTTP traffic?

• UDP, port 53

• TCP, port 80

• TCP, port 25

• UDP, port 67

If a network administrator wants to allow file transfers using FTP, which ports should be opened on the firewall?

• TCP ports 20 and 21

• UDP ports 67 and 68

• TCP port 443

• UDP port 161

A user is unable to receive emails using the POP3 protocol. Which port should be checked for connectivity issues?

• TCP port 110

• UDP port 53

• TCP port 25

• UDP port 69

You are asked to configure a network device to allow secure remote management. Which protocol and port should you use?

• Telnet, port 23

• SSH, port 22

• HTTP, port 80

• SNMP, port 161

A network engineer needs to ensure that DNS queries can be sent and received. Which protocol and port combination is primarily used for DNS queries?

• TCP, port 443

• UDP, port 53

• TCP, port 110

• UDP, port 25

If a network device is configured to use GRE, what is the primary purpose of this protocol?

• Encrypt data for secure transmission

• Encapsulate a wide variety of network layer protocols

• Assign IP addresses dynamically

• Monitor network performance

Which protocol is responsible for reporting errors and operational information in an IP network?

• ICMP

• TCP

• UDP

• GRE

A company wants to secure its site-to-site VPN traffic. Which protocol should be implemented to provide encryption and authentication at the network layer?

• IPsec

• ICMP

• GRE

• HTTP

When configuring a multicast application, which type of traffic is being used?

• Unicast

• Broadcast

• Multicast

• Anycast

If a DHCP server is not responding, which port should be checked for incoming DHCP requests?

• UDP port 67

• TCP port 80

• UDP port 161

• TCP port 443