Cisco’s exams can be a lot of hard work- we know. But the worst thing you can do to yourself is to simply look up the answers to exam questions. Not only do you not learn anything- but you’re hurting your future in the process.

Instead, shouldn’t you get a helpful hint and get pointed in the right direction of where to look for an answer? That way, you can keep your dignity, hopes for the future, and of course your grade. The questions below are from the CCNA 1 module 1 exam- but instead of straight answers, we reason out why the answers are correct. If any type of math or decision making is involved, we leave that up to you (But we will of course give you the resources you need to complete the question.)

#### 1. Several computers in the company require new NICs. A technician has located a good price on the Internet for the purchase of these NICs. Before these NICs are purchased and installed, what details must be verified? (Choose three.)

A) The MAC address on the NIC

B) The size of the RAM on the NIC

C) The bandwidth supported by the NIC

D) The type of media supported by the NIC

E) The type of network architecture supported by the NIC

**More info: **What is a Network Interface Card?

**Explanation: **After reading the material “What is a Network Interface Card,” we find out that a MAC address is unique to every NIC. Therefore, we don’t really have a need to be selective, and thus A is wrong. And NICs do have RAM, but it isn’t as vital to a NIC as it is for something like your computer- so B is wrong. The remaining three answers are therefore correct.

#### 2. What is the hexadecimal equivalent for the binary number 00100101?

A) 15

B) 20

C) 25

D) 30

E) 37

F) 40

**More Info:** A Guide to Network math

**Explanation:** The above problem involves converting a binary number to a hexadecimal number. The above article explains that to do so, you need to split the binary number into two nibbles and then find their decimal value. After you find the decimal value, you may finally find the hex number. Consult the article above more a more in-depth explanation.

#### 3. Which phrases describe a byte? (Choose two.)

A) a single binary digit

B) +5 volts of electricity

C) the value range 0 to 127

D) a grouping of eight binary digits

E) a single addressable data storage location

**More Info:** A Guide to Network math

**Explanation:** From reading the above article, we know that one binary digit is a bit, not a byte- A is wrong. +5 volts of electricity may in some instances indicate a bit, but certainly not a byte- B is wrong. C is wrong because the value ranges from 0 to 255, not 127. Finally we get D and E as our answers- since we know that there are 8 bits in a byte, and each byte is considered to be a single addressable data storage location.

#### 4. Which specialized equipment is used to make a physical connection from a PC to a network?

A) router

B) RAM

C) CD ROM

D) network interface card

**More Info: **What is a Network Interface Card?

**Explanation:** You don’t necessarily need to read the above article to know this answer. RAM and CD-ROM components do not take a part in a network- and a router, like the name implies, routes data rather than connects a PC to a network. Obviously, the answer should be D.

#### 5. What is the binary equivalent for the decimal number 248?

A) 11100000

B) 11110000

C) 11110100

D) 11111000

**More Info:** A Guide to Network math

**Explanation:** The above question wants you to convert the number 248 to binary. By reading the above article, we know that to do so we need to see which bits fit into 248. This is commonly done by the “Will this number go into 248?” method. If you need more of a descript explanation (complete with diagrams), consult the above article.

#### 6. Convert the binary number 01011011 into its hexadecimal equivalent. Select the correct answer from the list below.

A) 5A

B) 5B

C) 5C

D) 5D

E) 6B

F) 7A

**More Info:** A Guide to Network math

**Explanation:** The above problem involves converting a binary number to a hexadecimal number. The above article explains that to do so, you need to split the binary number into two nibbles and then find their decimal value. After you find the decimal value, you may finally find the hex number. Consult the article above more a more indepth explanation.

#### 7. What is the binary equivalent for decimal number 149?

A) 10010111

B) 10010101

C) 10011001

D) 10010111

E) 10101011

F) 10101101

**More Info:** A Guide to Network math

**Explanation:** The above question wants you to convert the number 149 to binary. By reading the above article, we know that to do so we need to see which bits fit into 149. This is commonly done by the “Will this number go into 149?” method. If you need more of a descript explanation (complete with diagrams), consult the above article.

#### 8. In an 8 bit binary number, what is the total number of combinations of the eight bits?

A) 128

B) 254

C) 255

D) 256

E) 512

F) 1024

**More Info:** A Guide to Network math

**Explanation:** This question can be tricky. By reading the above article, we know that it is either 255 or 256. We know that we can go up to 255 with each byte of data. But don’t be so sure it’s C- it is, in fact, D. This is because we count 0 as a number, and thus, there are 256 combinations. Be on the lookout for more sly questions Cisco throws at us to make sure we’re still awake.

#### 9. Which device connects a computer with a telephone line by providing modulation and demodulation of incoming and outgoing data?

A) NIC

B) CSU/DSU

C) router

D) modem

E) telco switch

**More Info: **What is a Modem?

**Explanation:** This question should be fairly easy. If you know the definition of a modem, you should get this question right even without our help. Nonetheless, the article above will provide extra information on modems if needed.

#### 10. What is the binary equivalent for the decimal number 162?

A) 10101010

B) 10100010

C) 10100100

D) 10101101

E) 10110000

F) 10101100

**More Info:** A Guide to Network math

**Explanation:** The above question wants you to convert the number 162 to binary. By reading the above article, we know that to do so we need to see which bits fit into 162. This is commonly done by the “Will this number go into 162?” method. If you need more of a descript explanation (complete with diagrams), consult the above article.

#### 11. Which of the following are popular web browsers? (Choose two.)

A) Acrobat

B) Internet Explorer

C) Macromedia Flash

D) Netscape Navigator

E) Quicktime

F) World Wide Web

**More Info:** (none)

**Explanation:** This is another question that you should know from basic computer knowledge. Although we ourselves hesitated and asked, “Where’s FireFox, and why is Netscape Navigator on the list?” (It seems Cisco is a little behind on the times.)

#### 12. Convert the Base 10 number 116 into its eight bit binary equivalent. Choose the correct answer from the following list:

A) 01111010

B) 01110010

C) 01110100

D) 01110110

E) 01110111

F) 01010110

**More Info:** A Guide to Network math

**Explanation:** The above question wants you to convert the number 116 to binary. By reading the above article, we know that to do so we need to see which bits fit into 116. This is commonly done by the “Will this number go into 116?” method. If you need more of a descript explanation (complete with diagrams), consult the above article.

#### 13. What is the hexadecimal equivalent for the binary number 10001110?

A) 22

B) 67

C) 142

D) AE

E) 8E

**More Info:** A Guide to Network math

**Explanation:** The above problem involves converting a binary number to a hexadecimal number. The above article explains that to do so, you need to split the binary number into two nibbles and then find their decimal value. After you find the decimal value, you may finally find the hex number. Consult the article above more a more indepth explanation.

#### 14. Represented as a decimal number, what is the result of the logical ANDing of binary numbers 00100011 and 11111100?

A) 3

B) 32

C) 35

D) 220

E) 255

**More Info:** A Guide to Network math

**Explanation:** This question involves the AND logical operator. Essentially, you compare the two binary numbers. If there is a binary 1 in the same location of both numbers, then you count that bit. Think of it as a test: you need 1 AND 1 for any addition to take place. A binary 1 and binary 0, or binary 0 and binary 0, will both not work. B is the correct answer since the 5th bit from the right is the only bit that can be ANDed- and 2^5 = 32. (Note that it is not the 6th bit, since we start counting at 0, not 1.)

#### 15. Convert the decimal number 231 into its binary equivalent. Select the correct answer from the list below.

A) 11110010

B) 11011011

C) 11110110

D) 11100111

E) 11100101

F) 11101110

**More Info:** A Guide to Network math

**Explanation:** The above question wants you to convert the number 231 to binary. By reading the above article, we know that to do so we need to see which bits fit into 231. This is commonly done by the “Will this number go into 231?” method. If you need more of a descript explanation (complete with diagrams), consult the above article.

#### 16. What are three conditions that would require a network administrator to install a new NIC? (Choose three.)

A) whenever a NIC is damaged

B) when there is a need to provide a secondary or backup NIC

C) when there is a change from copper media to wireless

D) whenever operating system security patches are applied

E) whenever the PC has been moved to a different location

**More Info:** What is a Network Interface Card?

**Explanation:** A is correct since when something is broke, we should fix it (or in this case replace it). Obviously if we have the need for a backup NIC, we will need to install a new one- B is correct too. C is correct since some NICs are specific to a certain type of media, so changing that media warrants a new NIC. D is not true since the operating system does not have an effect on the NIC. E is not true because the physical location of a computer will not interfere with your NIC.

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