Which of the following OSI layers performs error detection using a Frame Check Sequence?

A customer has recently implemented a VoIP telephone system on a flat network. The customer

reports issues with call clarity during business hours. Which of the following would a technician
configure on the customers network to help alleviate this problem? (Select TWO).

Which of the following VPN methods is BEST used for connecting a remote office to the main company office?

Which of the following port numbers is used by HTTP?

Which of the following network optimization methods would be BEST to implement to increase bandwidth for an internal streaming video server?

Which of the following protocols is the BEST to use to transfer files to/from a web server?

The ISP needs to terminate the WAN connection. The connection should be located in the network server room where the company LAN equipment resides. Which of the following identifies the
location?

A technician is troubleshooting network connectivity on a laptop. The user reports that a new
network interface card (NIC) was recently installed. The technician thinks the NIC has not been
properly configured to access the network. Which of the following network troubleshooting steps
should the technician do NEXT?

Creating a uniform user environment throughout the network can BEST be achieved by using which of the following?

A user reports incredibly slow network connectivity speeds. The technician determines the
computer has a properly configured Gigabit NIC connected to the wall outlet with a CAT5 cable.
Which of the following should the technician replace next to BEST improve performance?