CompTIA Security+ Question I-85

A malicious program modified entries in the LMHOSTS file of an infected system. Which of the following protocols would have been affected by this?

A. ICMP
B. BGP
C. NetBIOS
D. DNS

Answer: C

Explanation:
The LMHOSTS file provides a NetBIOS name resolution method that can be used for small networks that do not use a WINS server. NetBIOS has been adapted to run on top of TCP/IP, and is still extensively used for name resolution and registration in Windows-based environments.

CompTIA Network+ Question C-1

While troubleshooting, a technician notices that some clients using FTP still work and that pings to the local router and servers are working. The technician tries to ping all known nodes on the network and they reply positively, except for one of the servers. The technician notices that ping works only when the host name is used but not when FQDN is used. Which of the following servers is MOST likely down?

A. WINS server
B. Domain controller
C. DHCP server
D. DNS server

Correct Answer: D

CompTIA A+ Core 2 Question C-57

A user reports that they can browse the local network but cannot reach the Internet. A technician pings the local server and verifies the server responds but sites on the Internet do not. This could be caused by which of the following? (Select TWO).

A. Failed WINS server
B. Failed router
C. Disabled Windows firewall
D. Bad NIC
E. Failed gateway

Correct Answer: BE