CCNA1 v6.0 Chapter 8 Exam 2018
Chapter 8: Subnetting IP Networks
Designing, implementing and managing an effective IP addressing plan ensures that networks can operate effectively and efficiently. This is especially true as the number of host connections to a network increases. Understanding the hierarchical structure of the IP address and how to modify that hierarchy in order to more efficiently meet routing requirements is an important part of planning an IP addressing scheme.
In the original IPv4 address, there are two levels of hierarchy: a network and a host. These two levels of addressing allow for basic network groupings that facilitate in routing packets to a destination network. A router forwards packets based on the network portion of an IP address. When the network is located, the host portion of the address allows for identification of the destination device.
However, as networks grow, with many organizations adding hundreds, and even thousands of hosts to their network, the two-level hierarchy is insufficient.
Subdividing a network adds a level to the network hierarchy, creating, in essence, three levels: a network, a subnetwork, and a host. Introducing an additional level to the hierarchy creates additional sub-groups within an IP network that facilitates faster packet delivery and added filtration, by helping to minimize ‘local’ traffic.
This chapter examines, in detail, the creation and assignment of IP network and subnetwork addresses through the use of the subnet mask.
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CCNA1 v6.0 Chapter 8 Exam
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Question 1 of 22
1. Question
1 pointsWhat is a result of connecting two or more switches together?
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Question 2 of 22
2. Question
1 pointsRefer to the exhibit. How many broadcast domains are there?
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Question 3 of 22
3. Question
2 pointsWhat are two reasons a network administrator might want to create subnets? (Choose two.)
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Question 4 of 22
4. Question
1 pointsRefer to the exhibit. A company uses the address block of 128.107.0.0/16 for its network. What subnet mask would provide the maximum number of equal size subnets while providing enough host addresses for each subnet in the exhibit?
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Question 5 of 22
5. Question
1 pointsRefer to the exhibit. The network administrator has assigned the LAN of LBMISS an address range of 192.168.10.0. This address range has been subnetted using a /29 prefix. In order to accommodate a new building, the technician has decided to use the fifth subnet for configuring the new network (subnet zero is the first subnet). By company policies, the router interface is always assigned the first usable host address and the workgroup server is given the last usable host address. Which configuration should be entered into the properties of the workgroup server to allow connectivity to the Internet?
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Question 6 of 22
6. Question
1 pointsIf a network device has a mask of /28, how many IP addresses are available for hosts on this network?
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Question 7 of 22
7. Question
1 pointsWhich subnet mask would be used if 5 host bits are available?
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Question 8 of 22
8. Question
1 pointsHow many host addresses are available on the network 172.16.128.0 with a subnet mask of 255.255.252.0?
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Question 9 of 22
9. Question
1 pointsHow many bits must be borrowed from the host portion of an address to accommodate a router with five connected networks?
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Question 10 of 22
10. Question
1 pointsA network administrator wants to have the same network mask for all networks at a particular small site. The site has the following networks and number of devices:
IP phones – 22 addresses
PCs – 20 addresses needed
Printers – 2 addresses needed
Scanners – 2 addresses neededThe network administrator has deemed that 192.168.10.0/24 is to be the network used at this site. Which single subnet mask would make the most efficient use of the available addresses to use for the four subnetworks?
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Question 11 of 22
11. Question
2 pointsA company has a network address of 192.168.1.64 with a subnet mask of 255.255.255.192. The company wants to create two subnetworks that would contain 10 hosts and 18 hosts respectively. Which two networks would achieve that? (Choose two.)
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Question 12 of 22
12. Question
1 pointsA network administrator is variably subnetting a network. The smallest subnet has a mask of 255.255.255.248. How many usable host addresses will this subnet provide?
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Question 13 of 22
13. Question
1 pointsRefer to the exhibit.
Given the network address of 192.168.5.0 and a subnet mask of 255.255.255.224, how many total host addresses are unused in the assigned subnets?
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Question 14 of 22
14. Question
1 points14. Refer to the exhibit. Considering the addresses already used and having to remain within the 10.16.10.0/24 network range, which subnet address could be assigned to the network containing 25 hosts?
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Question 15 of 22
15. Question
1 pointsA network administrator needs to monitor network traffic to and from servers in a data center. Which features of an IP addressing scheme should be applied to these devices?
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Question 16 of 22
16. Question
2 pointsWhich two reasons generally make DHCP the preferred method of assigning IP addresses to hosts on large networks? (Choose two.)
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Question 17 of 22
17. Question
1 pointsA DHCP server is used to assign IP addresses dynamically to the hosts on a network. The address pool is configured with 192.168.10.0/24. There are 3 printers on this network that need to use reserved static IP addresses from the pool. How many IP addresses in the pool are left to be assigned to other hosts?
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Question 18 of 22
18. Question
1 pointsRefer to the exhibit. A company is deploying an IPv6 addressing scheme for its network. The company design document indicates that the subnet portion of the IPv6 addresses is used for the new hierarchical network design, with the site subsection to represent multiple geographical sites of the company, the sub-site section to represent multiple campuses at each site, and the subnet section to indicate each network segment separated by routers. With such a scheme, what is the maximum number of subnets achieved per sub-site?
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Question 19 of 22
19. Question
1 pointsWhat is the prefix for the host address 2001:DB8:BC15:A:12AB::1/64?
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Question 20 of 22
20. Question
1 pointsConsider the following range of addresses:
2001:0DB8:BC15:00A0:0000::
2001:0DB8:BC15:00A1:0000::
2001:0DB8:BC15:00A2:0000::
…
2001:0DB8:BC15:00AF:0000::
- The prefix-length for the range of addresses is / (60)
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Question 21 of 22
21. Question
3 pointsMatch the subnetwork to a host address that would be included within the subnetwork. (Not all options are used.)
Sort elements
- 192.168.1.64/27
- 192.168.1.32/27
- 192.168.1.96/27
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192.168.1.68
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192.168.1.48
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192.168.1.121
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Question 22 of 22
22. Question
4 pointsRefer to the exhibit. Match the network with the correct IP address and prefix that will satisfy the usable host addressing requirements for each network. (Not all options are used.)
Sort elements
- Network C
- Network A
- Network D
- Network B
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192.168.0.192 /27
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192.168.0.0 /25
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192.168.0.224 /30
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192.168.0.128 /26
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