After repairing a computer infected with malware, a technician determines that the web browser fails to go tothe proper address for some sites.
Which of the following should be checked? mappings that are configured in the Hosts file supersede the information in DNS. If there is an entry for a domain name in the Hosts file, then the server will not attempt to query DNS servers for that name. Instead, the and the Hosts file is not updated, you may be unable to connect to the host.

Which of the following helps prevent routing loops? cycle is created between routers. Split horizon, which prevents the router from advertising a route back to the other router from which it was learned, can be used to resist routing loops. Poison reverse, also known as split horizon with poison reverse, is also used to resist routing loops.

A network technician is troubleshooting a problem at a remote site. It has been determined that the connection from router A to router B is down. The technician at the remote site re-terminates the CAT5 cable that connects the two routers as a straight through cable. The cable is then tested and is plugged into the correct interface.
Which of the following would be the result of this action? connect two devices of the same type. It is for this reason that the interface will display the line protocol down status.

Two weeks after installation, a network technician is now unable to log onto any of the newly installed company switches. The technician suspects that a malicious user may have changed the switches’ settings before they were installed in secure areas.
Which of the following is the MOST likely way in which the malicious user gained access to the switches? used is a factory default.

A network administrator recently installed a web proxy server at a customer’s site. The following week, a system administrator replaced the DNS server overnight. The next day, customers began having issues accessing public websites.
Which of the following will resolve the issue?

A PC technician has installed a new network printer that was preconfigured with the correct static IP address, subnet mask, and default gateway. The printer was installed with a new cable and appears to have link activity, but the printer will not respond to any network communication attempts.
Which of the following is MOST likely the cause of the problem? another place in the network. This would explain the inability to communication with the printer, as it is on a different VLAN.

Which of the following WAN technologies is associated with high latency? the satellite, then from the satellite to the ground station, and then out to the Internet (or IP WAN). Not forgetting the return trip, and processing delays.

A company has changed ISPs for their office and ordered a new 250 Mbps symmetrical Internet connection. As a result, they have been given a new IP range. The ISP has assigned the company 10.10.150.16 /28. The company gateway router has the following interface configuration facing the ISP:
Interface A:
IP address: 10.10.150.16
Subnet mask: 255.255.255.240
Default gateway: 10.10.150.32
Speed: 1000 Mbps
Duplex: Auto
State: No Shutdown
None of the workstations at the company are able to access the Internet.
Which of the following are the reasons? (Select TWO). assigned by the ISP, the first host address should be 10.10.150.17 and the broadcast address should be gateway is configured incorrectly.

A network engineer is troubleshooting an issue with a computer that is unable to connect to the Internet. The network engineer analyzes the following output from a command line utility:
Network Destination Netmask GatewayInterface
192.168.1.0 255.255.255.0 192.168.1.254 eth0
192.168.1.10 255.255.255.255 192.168.1.10 eth0
127.0.0.1 255.0.0.0 On-Link lo
127.0.0.0 255.0.0.0 On-Link lo
255.255.255.255 255.255.255.255 102.168.1.10 eth0
Which of the following is the reason for the computer issue, given the above output? first line would show the Network Destination as 0.0.0.0 and the Netmaskas 0.0.0.0.

While troubleshooting a connectivity issue, a network technician determines the IP address of a number of workstations is 169.254.0.0/16 and the workstations cannot access the Internet.
Which of the following should the technician check to resolve the problem? configure the system with a default gateway address. This allows communication on the local network, but not externally.