CompTIA Network+ Certification (N10-003) Part 9

  • CompTIA Network+
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1. What is the default subnet mask of a Class B IP address?

Explanation

Class B IP addresses use the first 16 bits for network identification and the last 16 bits for host identification. The result is an IP address range from 128.0.0.0 through 191.255.255.255 and a default subnet mask of 255.255.0.0

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CompTIA Network+ Certification (N10-003) Part 9 - Quiz

30 CompTIA Network+ test questions covering services, IP addresses, subnets and subnetting.

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2. What is the default subnet mask of a Class C IP address?

Explanation

Class C IP addresses use the first 24 bits for network identification and the last 8 bits for host identification. The result is an IP address range from 192.0.0.1 through 223.255.255.255 and a default subnet mask of 255.255.255.0.

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3. What is the default subnet mask of a Class A IP address?

Explanation

Class A IP addresses use the first 8 bits for network identification and the last 24 bits for host identification. The result is an IP address range from 0.0.0.0 through 127.255.255.255 and a default subnet mask of 255.0.0.0.

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4. For which IP class range is 255.255.0.0 the default subnet mask?

Explanation

Class B IP addresses use the first 16 bits for network identification and the last 16 bits for host identification. The result is an IP address range from 128.0.0.0 through 191.255.255.255 and a default subnet mask of 255.255.0.0.

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5. For which IP class range is 255.0.0.0 the default subnet mask?

Explanation

Class A IP addresses use the first 8 bits for network identification and the last 24 bits for host identification. The result is an IP address range from 0.0.0.0 through 127.255.255.255 and a default subnet mask of 255.0.0.0.

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6. For which IP class range is 255.255.255.0 the default subnet mask?

Explanation

Class C IP addresses use the first 24 bits for network identification and the last 8 bits for host identification. The result is an IP address range from 192.0.0.1 through 223.255.255.255 and a default subnet mask of 255.255.255.0.

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7. Which of the following is responsible for resolving a fully qualified domain name to the IP address?

Explanation

The DNS service resolves fully qualified domain names and host names to IP addresses.

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8. Which of the following relies on DNS for name resolution?

Explanation

TCP/IP uses DNS for name resolution

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9. What does subnetting accomplish?

Explanation

Subnetting is used to segment a large network into smaller networks. These smaller networks can then be interconnected by using routers.

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10. Which network protocol has the most interoperability?

Explanation

TCP/IP is the most interoperable and can interoperate with most other network protocols.

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11. The use of domain name resolution in order to find addresses is connected to which of the following network protocols?

Explanation

TCP/IP uses DNS for name resolution

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12. What is required for segmenting a large network?

Explanation

Subnetting is used to divide a large network into smaller network segments, minimizing network traffic. Subnets are interconnected by means of routers and do not allow broadcast messages to pass from one subnet to another.

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13. You are a senior network administrator.  A trainee wants to know which of the following statements is correct regarding TCP and UDP.

Explanation

TCP is connection-oriented while UDP is connectionless. This means that TCP provides reliable, verifiable data exchange between hosts on a network while UDP does not provide reliability.

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14. You are a senior network technician.  A new trainee asks you which of the following IP adresses would represent a Class A address.  How do you answer?

Explanation

Class A IP addresses use the first 8 bits for network identification and the last 24 bits for host identification. The result is an IP address range from 0.0.0.0 through 127.255.255.255 and a default subnet mask of 255.0.0.0.

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15. Which of the following is a private Class A IP address?

Explanation

Class A IP addresses use the first 8 bits for network identification and the last 24 bits for host identification. The result is an IP address range from 0.0.0.0 through 127.255.255.255 and a default subnet mask of 255.0.0.0. However, 127.0.0.0 through 127.255.255.255 is reserved for diagnostics. Of this range, 10.0.0.0 to 10.255.255.255 is reserved for private IP addresses.

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16. Which of the following statements regarding segmenting are true?

Explanation

It is not possible to increase the number of hosts a Class A network can support.

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17. You are working as a network technician.  You have been asked to troubleshoot an ICS network at a branch office.  The network has been setup as follows:

ICS (Internet Connection Sharing) host:
- Windows 2000 Professional
- 3COM NIC
- File and print sharing enabled
- TCP/IP installed

ICS Client 1:
- Windows 98 2nd Edition
- 3COM NIC
- File and print sharing enabled
- IPX/SPX installed

ICS Client 2:
- Windows 98 2nd Edition
- Intel Etherlink NIC
- File and print sharing enabled
- TCP/IP installed

The ICS Client 1 user complains that she cannot connect to the Internet.  What is the most likely cause of this problem?

Explanation

ICS is only supported on TCP/IP networks, not on IPX/SPX networks. Therefore, TCP/IP must be installed on ICS Client 1.

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18. Which of the following is responsible for resolving a NetBIOS name to the IP address?

Explanation

WINS resolves NetBIOS names to IP addresses for older Windows computers that cannot interact with DNS

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19. Which of the following uses a Bindery Services or Novell Directory Services (NDS) for name resolution?

Explanation

IPX/SPX relies on either Bindery Services or Novell Directory Services (NDS) for name resolution

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20. You are working as a network administrator and are asked to configure a workstation for SLIP connection over modem.  Which networking protocol do you have to ensure is installed first?

Explanation

SLIP is a part of the TCP/IP protocol suite

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21. Which of the following are not valid reasons for implementing subnetting?

Explanation

It is not possible to increase the number of hosts a Class A network can support.

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22. Which of the following statements regarding subnetting are false?

Explanation

IPX/SPX networks do not use subnet masks, thus subnetting is not possible.

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23. Which of the following does not provide name resolution?

Explanation

DHCP is responsible for automating the IP configuration of DHCP clients. It does not provide any form of name resolution.

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24. Which of the following is not a valid IP address?

Explanation

IP addresses consist of four sets of 8 bit numbers called octets. 8 bit numbers have a maximum decimal value of 255. The address 172.192.4.256 has the decimal value 256 in the last octet and is therefore not valid. 10.24.12.0 is not a valid IP address for a host but it is a valid network address.

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25. Which of the following is a public Class A IP address?

Explanation

25.12.14.21 is a public Class A IP address.

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26. Which of the following provides name resolution for IPX/SPX?

Explanation

Novell Directory Services (NDS) provides host name to IPX address resolution in IPX/SPX networks.

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27. Which network protocol is the least interoperable?

Explanation

AppleTalk is the least interoperable.

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28. Which of the following is a valid IP address for an Internet host?

Explanation

Internet hosts require public IP addresses. 56.144.226.123 is a public IP address and is thus valid for IP hosts.

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29. Which of the following relies on Name Binding Protocol (NBP) to resolve a computer name to its network address?

Explanation

AppleTalk uses the Name Binding Protocol (NBP) to resolve a computer name to its network address

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What is the default subnet mask of a Class B IP address?
What is the default subnet mask of a Class C IP address?
What is the default subnet mask of a Class A IP address?
For which IP class range is 255.255.0.0 the default subnet mask?
For which IP class range is 255.0.0.0 the default subnet mask?
For which IP class range is 255.255.255.0 the default subnet mask?
Which of the following is responsible for resolving a fully qualified...
Which of the following relies on DNS for name resolution?
What does subnetting accomplish?
Which network protocol has the most interoperability?
The use of domain name resolution in order to find addresses is...
What is required for segmenting a large network?
You are a senior network administrator.  A trainee wants to know...
You are a senior network technician.  A new trainee asks you...
Which of the following is a private Class A IP address?
Which of the following statements regarding segmenting are true?
You are working as a network technician.  You have been asked to...
Which of the following is responsible for resolving a NetBIOS name to...
Which of the following uses a Bindery Services or Novell Directory...
You are working as a network administrator and are asked to configure...
Which of the following are not valid reasons for implementing...
Which of the following statements regarding subnetting are false?
Which of the following does not provide name resolution?
Which of the following is not a valid IP address?
Which of the following is a public Class A IP address?
Which of the following provides name resolution for IPX/SPX?
Which network protocol is the least interoperable?
Which of the following is a valid IP address for an Internet host?
Which of the following relies on Name Binding Protocol (NBP) to...
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