CompTIA Network+ Question A-23

Peter, a network technician, is setting up a DHCP server on a LAN segment. Which of the following options should Peter configure in the DHCP scope, in order to allow hosts on that LAN segment using dynamic IP addresses, to be able to access the Internet and internal company servers? (Select THREE).

A. Default gateway
B. Subnet mask
C. Reservations
D. TFTP server
E. Lease expiration time of 1 day
F. DNS servers
G. Bootp

Correct Answer: ABF

Explanation:
The question states that the client computers need to access the Internet as well as internal company servers. To access the Internet, the client computers need to be configured with an IP address with a subnet mask (answer B) and the address of the router that connects the company network to the Internet. This is known as the ‘default gateway’ (answer A).
To be able to resolve web page URLs to web server IP addresses, the client computers need to be configured with the address of a DNS server (answer F).

CompTIA A+ Core 2 Question G-77

Which Internet protocol encrypts and decrypts user page requests, as well as the pages that are returned by a web server using SSL?

A. NNTP
B. FTP
C. HTTP
D. HTTPS

Correct Answer: D

CompTIA A+ Question K-49

Peter, a user, cannot browse on the intranet to a particular web server by using the servername given to him by the administrator. Peter asks a coworker for the IP address of the same server, and is then able to access the webpage using the IP address. Which of the following is the MOST likely cause of the issue?

A. DNS is not configured correctly.
B. HTTP is not working on the server.
C. HTTP is not working on the client.
D. The network router is down.

Correct Answer: A

Explanation:
Domain Name System or DNS is use to translate a name into IP address. If the DNS server is not configured correctly, it will not be able to provide translation. http://www.howstuffworks.com/dns.htm

CompTIA A+ Question A-35

Which of the following protocols would be used to upload files to a web server?

A. IMAP
B. FTP
C. SMTP
D. ICMP

Correct Answer: B