Home > Articles > Cisco > CCNA Routing and Switching

Cisco CCENT ICND1 100-101 Exam Cram: Concepts in IP Addressing

Feb 10, 2014

📄 Contents

␡

Binary
Hexadecimal
Conversion Between Binary, Hex, and Decimal
IP Address Components
Subnetting
VLSM
Route Summarization
IPv6
Review Questions
Answers to Review Questions
What Next?

⎙ Print

< Back Page 9 of 11 Next >

This chapter is from the book 

CCENT ICND1 100-101 Exam Cram, 2nd Edition

Learn More Buy

Review Questions

Which of the following are alternate representations of the decimal number 227? Choose two.
- A. 0x227
- B. 11100011
- C. 0x143
- D. 0xE3
- E. 11100110
Which of the following are alternate representations of 0xB8? Choose two.
- A. 10110100
- B. 10111111
- C. 10111000
- D. 184
- E. 0x184
You have been asked to create a subnet that supports 16 hosts. What subnet mask should you use?
- A. 255.255.255.252
- B. 255.255.255.248
- C. 255.255.255.240
- D. 255.255.255.224
Given the mask 255.255.254.0, how many hosts per subnet does this create?
- A. 254
- B. 256
- C. 512
- D. 510
- E. 2
You are a senior network engineer at True North Technologies. Your boss, Mr. Martin, asks you to create a subnet with room for 12 IPs for some new managers. Mr. Martin promises that there will never be more than 12 managers, and he asks you to make sure that you conserve IP address space by providing the minimum number of possible host IPs on the subnet. What subnet mask will best meet these requirements?
- A. 255.255.255.12
- B. 255.255.255.0
- C. 255.255.240.0
- D. 255.255.255.240
- E. 255.255.255.224
Your boss, Duncan, does not seem to be able to grasp subnetting. He comes out of a management meeting and quietly asks you to help him with a subnetting issue. He needs to divide the Class B address space the company uses into six subnets for the various buildings in the plant, while keeping the subnets as large as possible to allow for future growth. What is the best subnet mask to use in this scenario?
- A. 255.255.0.0
- B. 255.255.248.0
- C. 255.255.224.0
- D. 255.255.240.0
- E. 255.255.255.224
You have purchased several brand-new Cisco routers for your company. Your current address space is 172.16.0.0 /22. Because these new routers support the ip subnet zero command, you realize you are about to gain back two subnets that you could not use with the old gear. How many subnets total will be available to you once the upgrades are complete?
- A. 4
- B. 2
- C. 32
- D. 62
- E. 64
Which of the following are true about the following address and mask pair: 10.8.8.0 /24? Assume that all subnets are available. Choose all that apply.
- A. This is a Class B address.
- B. This is a Class A address.
- C. This is a Class C address.
- D. 16 bits were stolen from the host field.
- E. 24 bits were stolen from the host field.
- F. The default mask for this address is 255.0.0.0.
- G. The mask can also be written as 255.255.255.0.
- H. The mask creates 65,536 subnets total from the default address space.
- I. Each subnet supports 256 valid host IPs.
- J. Each subnet supports 254 valid host IPs.
Indy and Greg have configured their own Windows 8 PCs and connected them with crossover cables. They can’t seem to share their illegally downloaded MP3 files, however. Given their configurations, what could be the problem?

Indy’s configuration:

IP: 192.168.0.65

Mask: 255.255.255.192

Greg’s configuration:

IP: 192.168.0.62

Mask: 255.255.255.192
- A. Indy is using a broadcast ID for his IP.
- B. Greg is using an invalid mask.
- C. Indy’s IP is in one of the zero subnets.
- D. Greg and Indy are using IPs in different subnets.
You are given an old router to practice for your CCNA. Your boss, Dave, has spent a lot of time teaching you subnetting. Now he challenges you to apply your knowledge. He hands you a note that says the following:

“Given the subnetted address space of 192.168.1.0 /29, give the E0 interface the first valid IP in the eighth subnet. Give the S0 interface the last valid IP in the 12th subnet. The zero subnets are available. You have 10 minutes. Go.”

Which two of the following are the correct IP and mask configurations? Choose two.
- A. E0: 192.168.1.1 255.255.255.0
- B. E0: 192.168.1.56 255.255.255.248
- C. E0: 192.168.1.57 255.255.255.248
- D. S0: 192.168.1.254 255.255.255.0
- E. S0: 192.168.1.95 255.255.255.248
- F. S0: 192.168.1.94 255.255.255.248
The following questions are part of a Subnetting SuperChallenge. This monster question will stretch your subnetting skills, especially if you give yourself a time limit. Start with 10 minutes and see if you can get down to 5.

The Vancouver Sailing Company has four locations: a head office and three branch offices. Each of the branches is connected to the head office by a point-to-point T1 circuit. The branches have one or more LANs connected to their routers. The routers are called Main, Jib, Genoa, and Spinnaker. The company has been assigned the 172.16.0.0/20 address space to work within.

Your task is to choose the correct IP address and mask for each interface, based on the information provided. Remember that no IP address may overlap with any address in another subnet, and that the required number of hosts for each subnet will affect your decision as to which address to use.

Here are the known IP configurations for the routers:

Main:

S0/0:172.16.0.1 /30

S0/1:172.16.0.5 /30

S0/2:172.16.0.9 /30

Fa1/0:172.16.4.1 /23

Fa1/1:172.16.6.1 /23

Jib:

S0/0: Connects to Main S0/0

Fa1/0: 172.16.8.33/27

Fa1/1: 30 hosts needed

Genoa:

S0/0: Connects to Main S0/1

Fa1/0: 172.16.8.129/26

Fa1/1: 100 hosts needed

Fa2/0: 100 hosts needed

Fa2/1: 172.16.13.0/24.

Spinnaker:

S0/0: Connects to Main S0/2

Fa1/0: 500 hosts needed

Choose the correct IP and mask assignments for each router:
- A. Jib Fa1/1: 172.16.8.62/27
- B. Jib Fa1/1: 172. 16.8.64/27
- C. Jib Fa1/1: 172.16.8.65/28
- D. Jib Fa1/0: 172.16.8.65/27
- E. Jib Fa1/1: 172.16.8.65/27
- F. Genoa S0/0: 172.16.0.2/30
- G. Genoa S0/0:172.16.0.6/30
- H. Genoa Fa1/1:172.16.12.1/26
- I. Genoa Fa1/1:172.16.12.1/25
- J. Genoa Fa2/0:172.16.12.129/24
- K. Genoa Fa2/0:172.16.12.129/25
- L. Genoa Fa2/1:172.16.12.193/25
- M. Genoa Fa2/1:172.16.13.1/25
- N. Genoa Fa0/2:172.16.13.1/24
- O. Spinnaker S0/0: 172.16.0.10/30
- P. Spinnaker S0/0: 172.16.0.12/30
- Q. Spinnaker Fa1/0: 172.16.13.0/23
- R. Spinnaker Fa1/0: 172.16.14.0/23
- S. Spinnaker Fa1/0: 172.16.14.1/23
Which of the following is the best summary statement for the following range of networks?

192.168.1.0 /24–192.168.15.0 /24
- A. 192.168.1.0
- B. 192.168.1.0 255.255.240.0
- C. 192.168.1.0 0.0.15.0
- D. 192.168.1.0 255.255.248.0
- E. 192.168.0.0 255.255.240.0
Which of the following is the best summary statement for the following range of networks?

192.168.24.0 /24–192.168.31.0 /24
- A. 192.168.24.0 255.255.240.0
- B. 192.168.24.0 /28
- C. 192.168.24.0 /21
- D. 192.168.0.0 /27
Which of the following networks are included in the summary 172.16.0.0 /13? Choose all that apply.
- A. 172.0.0.0 /16
- B. 172.16.0.0 /16
- C. 172.24.0.0 /16
- D. 172.21.0.0 /16
- E. 172.18.0.0 /16
What are the advantages of route summarization? Choose three.
- A. Ensures job security for network admins because of difficulty of configuration
- B. Reduces routing update traffic overhead
- C. Reduces the impact of discontiguous subnets
- D. Reduces CPU and memory load on routers
- E. Identifies flapping interfaces
- F. Hides network instability
Which of the following is a valid IPv6 address format?
- A. G412:AFFA:2001:0000:0000:0000:0000:0001
- B. 2001:8888:EEEE:1010:0000:0000:0000:0001
- C. 2001::8888::1
- D. 2010:2112:5440:1812:1867
Which of the following is a valid IPv6 unicast address format?
- A. 2001:8888:EEEE:1010:0000:0000:0000:0001
- B. FF00:0000:0000:0002:00CO:00A8:0001:0042
- C. 2001:8888::2FFE::00A8
- D. FFFF:FFFF:FFFF:FFFF:FFFF:FFFF:FFFF
Which of the following are valid IPv6 address formats for the same address? Choose three.
- A. 2001:0000:0000:0200:0222:0000:0000:0001
- B. 2001:0000:0000:02:0222:0000:0000:0001
- C. 2001:0:0:200:222:0:0:1
- D. 2001::200:222::1
- E. 2001:0:0:200:222::1
Which of the following is a valid IPv6 unicast address?
- A. FF00:2112:1812:5440::1
- B. 1812:2112:5440:1
- C. 255:255:255:255:255:255:255:255:255
- D. None of the above

< Back Page 9 of 11 Next >

🔖 Save To Your Account

Pearson IT Certification Promotional Mailings & Special Offers

I would like to receive exclusive offers and hear about products from Pearson IT Certification and its family of brands. I can unsubscribe at any time.

Privacy Notice

Overview

Pearson Education, Inc., 221 River Street, Hoboken, New Jersey 07030, (Pearson) presents this site to provide information about Pearson IT Certification products and services that can be purchased through this site.

This privacy notice provides an overview of our commitment to privacy and describes how we collect, protect, use and share personal information collected through this site. Please note that other Pearson websites and online products and services have their own separate privacy policies.

Collection and Use of Information

To conduct business and deliver products and services, Pearson collects and uses personal information in several ways in connection with this site, including:

Questions and Inquiries

For inquiries and questions, we collect the inquiry or question, together with name, contact details (email address, phone number and mailing address) and any other additional information voluntarily submitted to us through a Contact Us form or an email. We use this information to address the inquiry and respond to the question.

Online Store

For orders and purchases placed through our online store on this site, we collect order details, name, institution name and address (if applicable), email address, phone number, shipping and billing addresses, credit/debit card information, shipping options and any instructions. We use this information to complete transactions, fulfill orders, communicate with individuals placing orders or visiting the online store, and for related purposes.

Surveys

Pearson may offer opportunities to provide feedback or participate in surveys, including surveys evaluating Pearson products, services or sites. Participation is voluntary. Pearson collects information requested in the survey questions and uses the information to evaluate, support, maintain and improve products, services or sites; develop new products and services; conduct educational research; and for other purposes specified in the survey.

Contests and Drawings

Occasionally, we may sponsor a contest or drawing. Participation is optional. Pearson collects name, contact information and other information specified on the entry form for the contest or drawing to conduct the contest or drawing. Pearson may collect additional personal information from the winners of a contest or drawing in order to award the prize and for tax reporting purposes, as required by law.

Newsletters

If you have elected to receive email newsletters or promotional mailings and special offers but want to unsubscribe, simply email information@informit.com.

Service Announcements

On rare occasions it is necessary to send out a strictly service related announcement. For instance, if our service is temporarily suspended for maintenance we might send users an email. Generally, users may not opt-out of these communications, though they can deactivate their account information. However, these communications are not promotional in nature.

Customer Service

We communicate with users on a regular basis to provide requested services and in regard to issues relating to their account we reply via email or phone in accordance with the users' wishes when a user submits their information through our Contact Us form.

Other Collection and Use of Information

Application and System Logs

Pearson automatically collects log data to help ensure the delivery, availability and security of this site. Log data may include technical information about how a user or visitor connected to this site, such as browser type, type of computer/device, operating system, internet service provider and IP address. We use this information for support purposes and to monitor the health of the site, identify problems, improve service, detect unauthorized access and fraudulent activity, prevent and respond to security incidents and appropriately scale computing resources.

Web Analytics

Pearson may use third party web trend analytical services, including Google Analytics, to collect visitor information, such as IP addresses, browser types, referring pages, pages visited and time spent on a particular site. While these analytical services collect and report information on an anonymous basis, they may use cookies to gather web trend information. The information gathered may enable Pearson (but not the third party web trend services) to link information with application and system log data. Pearson uses this information for system administration and to identify problems, improve service, detect unauthorized access and fraudulent activity, prevent and respond to security incidents, appropriately scale computing resources and otherwise support and deliver this site and its services.

Cookies and Related Technologies

This site uses cookies and similar technologies to personalize content, measure traffic patterns, control security, track use and access of information on this site, and provide interest-based messages and advertising. Users can manage and block the use of cookies through their browser. Disabling or blocking certain cookies may limit the functionality of this site.

Do Not Track

This site currently does not respond to Do Not Track signals.

Security

Pearson uses appropriate physical, administrative and technical security measures to protect personal information from unauthorized access, use and disclosure.

Children

This site is not directed to children under the age of 13.

Marketing

Pearson may send or direct marketing communications to users, provided that

Pearson will not use personal information collected or processed as a K-12 school service provider for the purpose of directed or targeted advertising.
Such marketing is consistent with applicable law and Pearson's legal obligations.
Pearson will not knowingly direct or send marketing communications to an individual who has expressed a preference not to receive marketing.
Where required by applicable law, express or implied consent to marketing exists and has not been withdrawn.

Pearson may provide personal information to a third party service provider on a restricted basis to provide marketing solely on behalf of Pearson or an affiliate or customer for whom Pearson is a service provider. Marketing preferences may be changed at any time.

Correcting/Updating Personal Information

If a user's personally identifiable information changes (such as your postal address or email address), we provide a way to correct or update that user's personal data provided to us. This can be done on the Account page. If a user no longer desires our service and desires to delete his or her account, please contact us at customer-service@informit.com and we will process the deletion of a user's account.

Choice/Opt-out

Users can always make an informed choice as to whether they should proceed with certain services offered by Adobe Press. If you choose to remove yourself from our mailing list(s) simply visit the following page and uncheck any communication you no longer want to receive: www.pearsonitcertification.com/u.aspx.

Sale of Personal Information

Pearson does not rent or sell personal information in exchange for any payment of money.

While Pearson does not sell personal information, as defined in Nevada law, Nevada residents may email a request for no sale of their personal information to NevadaDesignatedRequest@pearson.com.

Supplemental Privacy Statement for California Residents

California residents should read our Supplemental privacy statement for California residents in conjunction with this Privacy Notice. The Supplemental privacy statement for California residents explains Pearson's commitment to comply with California law and applies to personal information of California residents collected in connection with this site and the Services.

Sharing and Disclosure

Pearson may disclose personal information, as follows:

As required by law.
With the consent of the individual (or their parent, if the individual is a minor)
In response to a subpoena, court order or legal process, to the extent permitted or required by law
To protect the security and safety of individuals, data, assets and systems, consistent with applicable law
In connection the sale, joint venture or other transfer of some or all of its company or assets, subject to the provisions of this Privacy Notice
To investigate or address actual or suspected fraud or other illegal activities
To exercise its legal rights, including enforcement of the Terms of Use for this site or another contract
To affiliated Pearson companies and other companies and organizations who perform work for Pearson and are obligated to protect the privacy of personal information consistent with this Privacy Notice
To a school, organization, company or government agency, where Pearson collects or processes the personal information in a school setting or on behalf of such organization, company or government agency.

Links

This web site contains links to other sites. Please be aware that we are not responsible for the privacy practices of such other sites. We encourage our users to be aware when they leave our site and to read the privacy statements of each and every web site that collects Personal Information. This privacy statement applies solely to information collected by this web site.

Requests and Contact

Please contact us about this Privacy Notice or if you have any requests or questions relating to the privacy of your personal information.

Changes to this Privacy Notice

We may revise this Privacy Notice through an updated posting. We will identify the effective date of the revision in the posting. Often, updates are made to provide greater clarity or to comply with changes in regulatory requirements. If the updates involve material changes to the collection, protection, use or disclosure of Personal Information, Pearson will provide notice of the change through a conspicuous notice on this site or other appropriate way. Continued use of the site after the effective date of a posted revision evidences acceptance. Please contact us if you have questions or concerns about the Privacy Notice or any objection to any revisions.

Last Update: November 17, 2020

Email Address