CCNA 1 – Chapter 9 – Exam Answers 2016 100%

CCNA 1 – Chapter 9 – Subnetting IP Networks Exam Answer 2016 100%

1. How many usable host addresses are there in the subnet 192.168.1.32/27?

• 30
• 16
• 62
• 32
• 64

2. When developing an IP addressing scheme for an enterprise network, which devices are recommended to be grouped into their own subnet or logical addressing group?

• workstation clients
• hosts accessible from the Internet
• end-user clients
• mobile and laptop hosts

3.

CCNA 1 – Chapter 9 – Subnetting IP Networks Exam Answer 2016 100%

Refer to the exhibit. How many broadcast domains are there?

• 3
• 4
• 1
• 2

4. Refer 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.)

CCNA 1 – Chapter 9 – Subnetting IP Networks Exam Answer 2016 100%

CCNA 1 – Chapter 9 – Subnetting IP Networks Exam Answer 2016 100%

5. How many host addresses are available on the network 172.16.128.0 with a subnet mask of 255.255.252.0?

• 512
• 1024
• 2046
• 2048
• 510
• 1022

6. A network administrator is variably subnetting a network. The smallest subnet has a mask of 255.255.255.248. How many host addresses will this subnet provide??

• 8
• 10
• 12
• 4
• 6

7.

CCNA 1 – Chapter 9 – Subnetting IP Networks Exam Answer 2016 100%

Refer 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?

• IP address: 192.168.10.38 subnet mask: 255.255.255.240, default gateway: 192.168.10.33
• IP address: 192.168.10.41 subnet mask: 255.255.255.248, default gateway: 192.168.10.46
• IP address: 192.168.10.254 subnet mask: 255.255.255.0, default gateway: 192.168.10.1
• IP address: 192.168.10.65 subnet mask: 255.255.255.240, default gateway: 192.168.10.76
• IP address: 192.168.10.38 subnet mask: 255.255.255.248, default gateway: 192.168.10.33

8. How many bits must be borrowed from the host portion of an address to accommodate a router with five connected networks?

• three
• five
• two
• four

9. A 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.)

• 192.168.1.64/27
• 192.168.1.96/28
• 192.168.1.192/28
• 192.168.1.16/28
• 192.168.1.128/27

10. Which two notations are useable nibble boundaries when subnetting in IPv6? (Choose two.)

• /64
• /68
• /70
• /62
• /66

11.In a network that uses IPv4, what prefix would best fit a subnet containing 100 hosts?

• /24
• /26
• /23
• /25

12.

CCNA 1 – Chapter 9 – Subnetting IP Networks Exam Answer 2016 100%

Refer 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?

• 60
• 68
• 72
• 56
• 64

13. Fill in the blank.
In dotted decimal notation, the subnet mask 255.255.254.0 will accommodate 500 hosts per subnet.
Consider 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 

14. A 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?

• addresses from different subnets for redundancy
• dynamic addresses to reduce the probability of duplicate addresses
• random static addresses to improve security
• predictable static IP addresses for easier identification

15. Which two reasons generally make DHCP the preferred method of assigning IP addresses to hosts on large networks? (Choose two.)

• It ensures that addresses are only applied to devices that require a permanent address.
• It provides an address only to devices that are authorized to be connected to the network.
• It reduces the burden on network support staff.
• It eliminates most address configuration errors.
• It guarantees that every device that needs an address will get one.

16.

A computer that is configured with the IPv6 address as shown in the exhibit is unable to access the internet. What is the problem?

Refer to the exhibit. A computer that is configured with the IPv6 address as shown in the exhibit is unable to access the internet. What is the problem?

• There should not be an alternative DNS address.
• The settings were not validated.
• The DNS address is wrong.
• The gateway address is in the wrong subnet.

17. Match the subnetwork to a host address that would be included within the subnetwork. (Not all options are used.)

CCNA 1 – Chapter 9 – Subnetting IP Networks Exam Answer 2016 100%

18. When subnetting a /64 IPv6 network prefix, which is the preferred new prefix length?

• /70
• /74
• /66
• /72

19. What is the subnet address for the address 2001:DB8:BC15:A:12AB::1/64?

• 2001:DB8:BC15:A::0
• 2001:DB8:BC15:A:12::0
• 2001:DB8:BC15::0
• 2001:DB8:BC15:A:1::1

20. Fill in the blank.
In dotted decimal notation, the IP address     172.25.0.126    is the last host address for the network 172.25.0.64/26.

21. Fill in the blank.
A nibble consists of    4    bits.

22. Open the PT Activity. Perform the tasks in the activity instructions and then answer the question.
What issue is causing Host A to be unable to communicate with Host B?

• Host A has an incorrect default gateway.
• The IP address of host B is not in the same subnet as the default gateway is on.
• The subnet mask of host A is incorrect.
• Host A and host B are on overlapping subnets.

23.

CCNA 1 – Chapter 9 – Subnetting IP Networks Exam Answer 2016 100%

Refer 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?

• 255.255.255.128
• 255.255.255.224
• 255.255.255.240
• 255.255.255.0
• 255.255.255.192