Itn 208 Chapter 11 Review Questions
- 1.
Which of the following are reasons for upgrading to IPv6? (Choose all that apply.)
- A.
You can have as many public addresses as you want
- B.
You are out of IPv4 addresses
- C.
You need features provided by IPv6
- D.
It is less complex and easier to understand
Correct Answer(s)
B. You are out of IPv4 addresses
C. You need features provided by IPv6Explanation
The correct answers for upgrading to IPv6 are:
1. You are out of IPv4 addresses: IPv4 addresses are limited in number and have been exhausted. Upgrading to IPv6 allows for a larger pool of available addresses.
2. You need features provided by IPv6: IPv6 offers various features such as improved security, better mobility support, and enhanced network management capabilities.Rate this question:
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- 2.
"Dual stack" refers to
- A.
Having stacks of routers in adjacent datacenter racks, for redundancy
- B.
A system that is running either IPv4 or IPv6
- C.
A system that is running both IPv4 or IPv6
- D.
A system that is running tow instances of IPv6
Correct Answer
C. A system that is running both IPv4 or IPv6Explanation
"Dual stack" refers to a system that is capable of running both IPv4 and IPv6 protocols simultaneously. This means that the system can handle network traffic using either IPv4 or IPv6, depending on the availability and compatibility of the network. By supporting both protocols, the system ensures seamless communication and transition between IPv4 and IPv6 networks.Rate this question:
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- 3.
Which of the following are reasons to implement tunnels as part of an IPv6 migration? (Choose all that apply.)
- A.
You have an IPv4 host that cannot be upgraded but needs to talk to the rest of the IPv6 network.
- B.
You have a dual-stack host connected to an IPv4 network, and it needs to talk to the rest of the IPv6 network.
- C.
You have two islands of IPv6 hosts separated by an IPv4 network.
- D.
. You have two islands of IPv4 hosts separated by an IPv6 network
Correct Answer(s)
B. You have a dual-stack host connected to an IPv4 network, and it needs to talk to the rest of the IPv6 network.
C. You have two islands of IPv6 hosts separated by an IPv4 network.
D. . You have two islands of IPv4 hosts separated by an IPv6 networkExplanation
Tunnels are implemented as part of an IPv6 migration in two scenarios. The first scenario is when there is a dual-stack host connected to an IPv4 network that needs to communicate with the rest of the IPv6 network. Tunnels allow the IPv6 traffic to be encapsulated within IPv4 packets, enabling communication between the dual-stack host and the IPv6 network. The second scenario is when there are two islands of IPv6 hosts separated by an IPv4 network. Tunnels can be used to establish connectivity between these islands by encapsulating the IPv6 traffic within IPv4 packets, allowing communication across the IPv4 network.Rate this question:
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- 4.
Which of the following steps is not involved in enabling ISATAP on an IPv6 network?
- A.
Configuring an ISATAP router
- B.
adding an A record for ISATAP in DNS
- C.
adding an AAAA record for ISATAP in DNS
- D.
configuring the clients
Correct Answer
C. adding an AAAA record for ISATAP in DNSExplanation
Enabling ISATAP on an IPv6 network involves configuring an ISATAP router, adding an A record for ISATAP in DNS, and configuring the clients. However, adding an AAAA record for ISATAP in DNS is not necessary for enabling ISATAP. AAAA records are used for mapping IPv6 addresses to domain names, but in the case of ISATAP, A records are sufficient as ISATAP uses IPv4 addresses.Rate this question:
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- 5.
Which of the following is a valid reason to use stateful autoconfiguration?
- A.
Clients need a unique IP address.
- B.
Clients need to know their default gateway.
- C.
Clients need to know their DNS server and domain suffix.
- D.
There is no valid reason.
Correct Answer
C. Clients need to know their DNS server and domain suffix.Explanation
Stateful autoconfiguration is a method in which a client device obtains its network configuration information from a DHCP server. This includes information such as the client's IP address, default gateway, DNS server, and domain suffix. In this case, the valid reason to use stateful autoconfiguration is that the clients need to know their DNS server and domain suffix. This information is necessary for the clients to properly communicate with other devices on the network and access resources on the internet.Rate this question:
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- 6.
Where can you get a block of IPv6 addresses if you are in the United States and plan to single-home your network?
- A.
an electronics store
- B.
IANA
- C.
your ISP
- D.
ARIN
Correct Answer
C. your ISPExplanation
If you are in the United States and plan to single-home your network, you can get a block of IPv6 addresses from your Internet Service Provider (ISP). ISPs are responsible for providing internet connectivity to their customers, and they allocate IP addresses to their customers for their network usage. Therefore, your ISP would be the appropriate source for obtaining a block of IPv6 addresses in this scenario.Rate this question:
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- 7.
Where can you get a block of IPv6 addresses if you are in the United States and plan to multihome your network?
- A.
An electronics store d. ARIN
- B.
IANA
- C.
Your ISP
- D.
ARIN
Correct Answer
D. ARINExplanation
ARIN (American Registry for Internet Numbers) is the regional internet registry for the United States, Canada, and parts of the Caribbean. They are responsible for allocating and managing IP addresses in this region. If you are in the United States and plan to multihome your network, you would need to obtain a block of IPv6 addresses from ARIN.Rate this question:
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- 8.
What does the Windows command netsh interface ipv6 dump do?
- A.
Outputs a list of commands that can be used to rebuild the current IPv6 configuration
- B.
Outputs diagnostic information about IPv6 that you can send to Microsoft for analysis
- C.
Nothing
- D.
Ts the configuration to factory defaults and wipes the buffers and counters
Correct Answer
A. Outputs a list of commands that can be used to rebuild the current IPv6 configurationExplanation
The Windows command netsh interface ipv6 dump outputs a list of commands that can be used to rebuild the current IPv6 configuration. This means that it provides a textual representation of the current IPv6 configuration settings, including all the commands that were used to set up the configuration. This can be useful for troubleshooting purposes or for documenting the current configuration.Rate this question:
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- 9.
Why should you create and use a test lab?
- A.
To evaluate products
- B.
to test applications as they are migrated to IPv6
- C.
To test designs and create standardized configurations
- D.
All of the above
Correct Answer
D. All of the aboveExplanation
Creating and using a test lab is important for multiple reasons. Firstly, it allows you to evaluate products before implementing them in a real-world environment, ensuring they meet your requirements and perform as expected. Secondly, a test lab is necessary to test applications as they are migrated to IPv6, as this transition may introduce compatibility issues that need to be identified and resolved. Lastly, a test lab enables you to test designs and create standardized configurations, ensuring consistency and reliability in your network infrastructure. Therefore, the correct answer is "all of the above."Rate this question:
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- 10.
Which tools should you include in a test lab? (Choose all that apply.)
- A.
Traffic simulator
- B.
Protocol analyzer
- C.
AED box
- D.
Jump box
Correct Answer(s)
A. Traffic simulator
B. Protocol analyzer
D. Jump boxExplanation
A test lab should include tools that can help in testing and analyzing network traffic and protocols. A traffic simulator is useful for generating simulated network traffic to test the performance and reliability of the network. A protocol analyzer is essential for capturing and analyzing network packets to troubleshoot and diagnose network issues. A jump box is a secure gateway that allows access to different network environments, making it easier to test and deploy applications. An AED box, which stands for Automated External Defibrillator, is not relevant to a test lab and is not necessary for testing network functionality.Rate this question:
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- 11.
What is the preferred method for migrating networks from IPv4 to IPv6?
- A.
Tunnels
- B.
Dual stack
- C.
translation
- D.
convert everything at once
Correct Answer
B. Dual stackExplanation
The preferred method for migrating networks from IPv4 to IPv6 is through the use of dual stack. Dual stack allows for both IPv4 and IPv6 protocols to coexist on the network, allowing for a gradual transition from IPv4 to IPv6 without disrupting existing services. This approach ensures compatibility with both IPv4 and IPv6 devices and applications, providing a smooth transition process.Rate this question:
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- 12.
You need to tunnel through NAT. Which of the following is the best choice?
- A.
Teredo
- B.
6to4
- C.
ISATAP
- D.
None of the above
Correct Answer
A. TeredoExplanation
Teredo is the best choice for tunneling through NAT because it is specifically designed to provide IPv6 connectivity to devices behind NAT devices. It allows IPv6 packets to be encapsulated within IPv4 packets, allowing them to traverse NAT without any issues. 6to4 and ISATAP are also tunneling protocols, but they are not as effective as Teredo when it comes to NAT traversal. Therefore, the correct answer is Teredo.Rate this question:
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- 13.
A host is running IPv6. You connect the host to an IPv4 network with no IPv6 routers. What happens by default to the host?
- A.
It will not be able to talk to any IPv6 hosts.
- B.
It will be able to talk to the IPv6 Internet.
- C.
It will only be able to talk to your IPv6 intranet.
- D.
It will only be able to talk to IPv6 nodes on its local link.
Correct Answer
D. It will only be able to talk to IPv6 nodes on its local link.Explanation
When a host running IPv6 is connected to an IPv4 network with no IPv6 routers, it will only be able to communicate with IPv6 nodes on its local link. This means that it can only communicate with other devices on the same network segment or link that are also running IPv6. It will not be able to communicate with IPv6 hosts on the internet or on other networks, as there are no IPv6 routers present to facilitate the communication between different networks.Rate this question:
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- 14.
How many link-local IPv6 addresses does a node have?
- A.
one
- B.
one per interface
- C.
as many as you configure
- D.
None, because only routers have link-local addresses
Correct Answer
B. one per interfaceExplanation
Each node in an IPv6 network has a link-local address for each of its interfaces. This means that if a node has multiple interfaces, it will have multiple link-local addresses. The link-local address is used for communication within the local network and does not require any configuration or assignment by a router. Therefore, the correct answer is "one per interface".Rate this question:
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- 15.
Your decision to multihome your enterprise network will increase the number of prefixes in the default-free zone. How will this affect routers in the IPv6 Internet? (Choose all that apply.)
- A.
Increases memory required to store the routing table
- B.
increases time to look up entries in the routing table
- C.
increases the size of packets in the routers
- D.
increases the number of prefix announcements between routers
Correct Answer(s)
A. Increases memory required to store the routing table
B. increases time to look up entries in the routing table
D. increases the number of prefix announcements between routersExplanation
When multihoming an enterprise network, the number of prefixes in the default-free zone will increase. This will have several effects on routers in the IPv6 Internet. Firstly, it will increase the memory required to store the routing table, as there will be more prefixes to keep track of. Secondly, it will increase the time to look up entries in the routing table, as more prefixes need to be searched through. Lastly, it will increase the number of prefix announcements between routers, as each router needs to inform others about the additional prefixes.Rate this question:
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- 16.
Which of the following would not affect your choice of interior gateway protocol for IPv6?
- A.
Your legacy IPv4 protocol
- B.
your hardware vendor
- C.
The size of your circuits
- D.
The size and complexity of your network
Correct Answer
C. The size of your circuitsExplanation
The size of your circuits refers to the capacity or bandwidth of the network connections you have. The choice of interior gateway protocol for IPv6 is not affected by the size of your circuits because the interior gateway protocol is concerned with routing and exchanging routing information between routers within a network. The size of the circuits does not impact the decision of which protocol to use for this purpose.Rate this question:
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- 17.
Which of the following have IPv6 routes?
- A.
All IPv6 nodes
- B.
only IPv6 routers
- C.
IPv6 routers and servers but not laptops
- D.
only devices running an IPv6 routing protocol
Correct Answer
A. All IPv6 nodesExplanation
All IPv6 nodes have IPv6 routes. IPv6 routes are necessary for the nodes to communicate with each other and to forward packets to their destinations. This includes IPv6 routers, servers, laptops, and any other device that supports IPv6. Therefore, the correct answer is that all IPv6 nodes have IPv6 routes.Rate this question:
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- 18.
What kinds of activities are appropriate to perform in a sandbox?
- A.
Test routing protocol changes
- B.
Test tunneling schemes
- C.
test security products
- D.
all of the above
Correct Answer
D. all of the aboveExplanation
All of the activities mentioned - testing routing protocol changes, testing tunneling schemes, and testing security products - are appropriate to perform in a sandbox. A sandbox is a controlled environment where various activities can be tested and experimented with, without affecting the production system. It allows for the evaluation and validation of different changes and products before implementing them in the actual system. Therefore, all of the mentioned activities can be effectively performed in a sandbox.Rate this question:
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- 19.
What will happen to a legacy IPv4 application that is not IPv6 native after you have upgraded your clients to be IPv6-only?
- A.
The server will automatically translate from IPv4 to IPv6 to talk to the clients.
- B.
The clients will automatically translate from IPv6 to IPv4 to talk to the application.
- C.
The application will automatically translate from IPv4 to IPv6 to talk to the clients.
- D.
Clients will be unable to communicate with the application.
Correct Answer
D. Clients will be unable to communicate with the application. -
- 20.
How many host addresses are there in IPv6-?
- A.
2^128 -2
- B.
2^64
- C.
2^64 -2
- D.
2^128
Correct Answer
D. 2^128Explanation
IPv6 uses 128 bits for its address space, which allows for a total of 2^128 possible addresses. However, out of these addresses, two are reserved for special purposes (loopback and unspecified addresses), so the actual number of host addresses in IPv6 is 2^128 - 2.Rate this question:
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Mar 21, 2023Quiz Edited by
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Apr 19, 2017Quiz Created by
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