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61.
You have just set up a network that will use the TCP/IP protocol, and you want client
computers to automatically obtain IP configuration information. Which type of server
do you need for this?
- A.DNS
- B.DHCP
- C.Domain controller
- D.IP configuration server
- Answer & Explanation
- Report
Answer : [B]
Explanation :
Explanation :
| A Dynamic Host Configuration Protocol (DHCP) server provides IP configuration information to hosts when they join the network. A Domain Name System (DNS) server resolves hostnames to IP addresses. A domain controller may provide login authentication, but it does not provide IP configuration information. There is no IP configuration server. |
62.
You have a computer with the IP address 171.226.18.1. What class is this address?
- A.Class A
- B.Class B
- C.Class C
- D.Not a valid IP address
- Answer & Explanation
- Report
Answer : [B]
Explanation :
Explanation :
| Class A addresses have a first octet between 1 and 126, Class B between 128 and 191, and class C between 192 and 223. With a first octet of 171, this is a Class B address. |
63.
Which TCP/IP protocol uses port 80?
- A.HTTP
- B.HTTPS
- C.Telnet
- D.POP3
- Answer & Explanation
- Report
Answer : [A]
Explanation :
Explanation :
| HTTP uses port 80. HTTPS uses 443, Telnet 23, and POP3 110. |
64.
What is the maximum number of IPv6 addresses that can be assigned to one IPv6 interface?
- A.One (unicast)
- B.Two (unicast and anycast)
- C.Three (unicast, anycast, and multicast)
- D.None of the above
- Answer & Explanation
- Report
Answer : [D]
Explanation :
Explanation :
| An IPv6 interface is not limited in the number of addresses it can be assigned, although there could be limitations based upon practicality. |
65.
Which of the following are valid examples of IPv6 addresses? (Choose two.)
- A.2001:0db8:3c4d:0012:0000:0000:1234:56ab
- B.::ffff:c0a8:173
- C.2001:db8:3c4d:12::1234:56ab
- D.2001::1ab4::5468
- Answer & Explanation
- Report
Answer : [A, B, C]
Explanation :
Explanation :
| An IPv6 address contains 128 bits, written in eight 16-bit fields represented by four hexadecimal digits. Option A contains all eight fields expressed in full. Option B is an IPv4 address expressed in IPv6 form. Option C is the same address as option A but written in accepted shorthand. Option D is not valid because the double colons (::) can be used only once within an address. |
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