A+ Networking

Which of the following ports should you block at the firewall if you want to prevent a remote login to a server from occurring?

• 21

• 22

• 80

• 143

Your company just installed a new web server within your DMZ. You have been asked to open up the port for secure web browsing on the firewall. Which port should you set as open to allow users to access this new server?

• 21

• 80

• 143

• 443

Which of the following devices would you configure an ACL in order to implement a security policy within your network?

• Switch

• Firewall

• Repeater

• Hub

Your network is running extremely slow. You have troubleshot the issue and determined that there are too many collisions on the network. Your network currently has 20 computers all connected to a single 24-port hub on the network. Which of the following devices should you install to decrease the number of collisions?

• Firewall

• Switch

• Gateway

• Repeater

You are trying to select the best device to install in order to proactively stop outside attackers from reaching into your internal network. Which of the following devices would be the BEST for you to select?

• IDS

• IPS

• Proxy server

• Syslog server

The service desk has received numerous calls from different users stating they are receiving a error message concerning duplicate IP addresses being detected on their systems. These users also cannot access the network's file server or browse to any websites. Which of the following servers should the technician check first to troubleshoot this issue?

• RADIUS server

• DNS server

• Proxy server

• DHCP server

You are trying to send an email to your boss, but it refuses to leave your outbox. You see an error message displayed on your screen that tells you to verify your outbound server settings. Which of the following servers should you configure your email client to use in order to ensure your emails are being sent?

• SMTP server

• SSH server

• POP3 server

• DNS server

Your company has an office in Boston and is worried that its employees may not be able to reach the office during periods of heavy snowfall. You have been asked to select a technology that would allow employees to work remotely from their home during poor weather conditions. Which of the following should you select?

• IDS

• NAT

• VLAN

• VPN

Your home network has a wireless access point (WAP) that allows your smartphone and tablet to connect to your internal network. The WAP is connected to a router and a cable modem in order to provide internet access. There is a coaxial cable that carries the network traffic from the cable modem to the cable company’s central office for transmission to and from the internet. Which of the following types of networks would best describe this network configuration between your home network and the internet through your cable modem connection?

• PAN

• LAN

• MAN

• WAN

You just configured your iPhone to connect to your car’s stereo over Bluetooth in order to play your favorite podcasts while driving to work. What type of network did you create between your iPhone and your car?

• PAN

• LAN

• WMN

• WAN