The following are chapter 3 test questions on Fundamentals of LAN’s. If you can answer 11 out of 11 or 10 out of 11 , you may want to just skim this chapter and jump to chapter 4.

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Fundamentals of LAN’s

1. Which of the following is true about the cabling of a typical modern Ethernet LAN?

a. Connect each device in series using coaxial cabling
b. Connect each device in series using UTP cabling
c. Connect each device to a centralized LAN hub using UTP cabling
d. Connect each device to a centralized LAN switch using UTP cabling

2. Which of the following is true about the cabling of a 10BASE2 Ethernet LAN?

a. Connect each device in series using coaxial cabling
b. Connect each device in series using UTP cabling
c. Connect each device to a centralized LAN hub using UTP cabling
d. Connect each device to a centralized LAN switch using UTP cabling

3. Which of the following is true about Ethernet crossover cables?

a. Pins 1 and 2 are reversed on the other end of the cable.
b. Pins 1 and 2 on one end of the cable connect to pins 3 and 6 on the other end of the cable.
c. Pins 1 and 2 on one end of the cable connect to pins 3 and 4 on the other end of the cable.
d. The cable can be up to 1000 meters long to cross over between buildings.
e. None of the other answers is correct.

4. Each answer lists two types of devices used in a 100BASE-TX network. If these devices were connected with UTP Ethernet cables, which pairs of devices would require a straight-through cable?

a. PC and router
b. PC and switch
c. Hub and switch
d. Router and hub
e. Wireless access point (Ethernet port) and switch

5. Which of the following is true about the CSMA/CD algorithm?

a. The algorithm never allows collisions to occur.
b. Collisions can happen, but the algorithm defines how the computers should notice a collision and how to recover.
c. The algorithm works with only two devices on the same Ethernet.
d. None of the other answers is correct.

6. Which of the following is a collision domain?

a. All devices connected to an Ethernet hub
b. All devices connected to an Ethernet switch
c. Two PCs, with one cabled to a router Ethernet port with a crossover cable and the other PC cabled to another router Ethernet port with a crossover cable
d. None of the other answers is correct.

7. Which of the following describe a shortcoming of using hubs that is improved by instead using switches?

a. Hubs create a single electrical bus to which all devices connect, causing the
devices to share the bandwidth.
b. Hubs limit the maximum cable length of individual cables (relative to switches)
c. Hubs allow collisions to occur when two attached devices send data at the same time.
d. Hubs restrict the number of physical ports to at most eight.

8. Which of the following terms describe Ethernet addresses that can be used to communicate with more than one device at a time?

a. Burned-in address
b. Unicast address
c. Broadcast address
d. Multicast address

9. Which of the following is one of the functions of OSI Layer 2 protocols?

a. Framing
b. Delivery of bits from one device to another
c. Error recovery
d. Defining the size and shape of Ethernet cards

10. Which of the following are true about the format of Ethernet addresses?

a. Each manufacturer puts a unique code into the first 2 bytes of the address.
b. Each manufacturer puts a unique code into the first 3 bytes of the address.
c. Each manufacturer puts a unique code into the first half of the address.
d. The part of the address that holds this manufacturer’s code is called the MAC.
e. The part of the address that holds this manufacturer’s code is called the OUI.
f. The part of the address that holds this manufacturer’s code has no specific name.

11. Which of the following is true about the Ethernet FCS field?

a. It is used for error recovery.
b. It is 2 bytes long.
c. It resides in the Ethernet trailer, not the Ethernet header.
d. It is used for encryption.
e. None of the other answers is correct.

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The following are chapter 2 test questions on TCP/IP and OSI networking models. If you can answer 10 out of 10 or 9 out of 10 , you may want to just skim this chapter and jump to chapter 3. However, if my N+ network exam is anything like the CCENT exam, you’ll want to have this down cold. I had over 10 question on this topic alone.

1. Which of the following protocols are examples of TCP/IP transport layer protocols?
a. Ethernet
b. HTTP
c. IP
d. UDP
e. SMTP
f. TCP

2. Which of the following protocols are examples of TCP/IP network access layer protocols?
a. Ethernet
b. HTTP
c. IP
d. UDP
e. SMTP
f. TCP
g. PPP

3. The process of HTTP asking TCP to send some data and make sure that it is received correctly is an example of what?
a. Same-layer interaction
b. Adjacent-layer interaction
c. The OSI model
d. All the other answers are correct.

4. The process of TCP on one computer marking a segment as segment 1, and the receiving computer then acknowledging the receipt of segment 1, is an example of what?
a. Data encapsulation
b. Same-layer interaction
c. Adjacent-layer interaction
d. The OSI model
e. None of these answers are correct.

5. The process of a web server adding a TCP header to a web page, followed by adding an IP header, and then a data link header and trailer is an example of what?
a. Data encapsulation
b. Same-layer interaction
c. The OSI model
d. All of these answers are correct.

6. Which of the following terms is used specifically to identify the entity that is created when encapsulating data inside data link layer headers and trailers?
a. Data
b. Chunk
c. Segment
d. Frame
e. Packet
f. None of these—there is no encapsulation by the data link layer.

7. Which OSI layer defines the functions of logical network-wide addressing and routing?
a. Layer 1
b. Layer 2
c. Layer 3
d. Layer 4
e. Layer 5
f. Layer 6
g. Layer 7

8. Which OSI layer defines the standards for cabling and connectors?
a. Layer 1
b. Layer 2
c. Layer 3
d. Layer 4
e. Layer 5
f. Layer 6
g. Layer 7

9. Which OSI layer defines the standards for data formats and encryption?
a. Layer 1
b. Layer 2
c. Layer 3
d. Layer 4
e. Layer 5
f. Layer 6
g. Layer 7

10. Which of the following terms are not valid terms for the names of the seven OSI layers?
a. Application
b. Data link
c. Transmission
d. Presentation
e. Internet
f. Session

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Practice question 6 – 10 in the series.

6. Ohms is the basic unit of measurement for:
a. capacitors
b. voltage
c. current
d. resistors

7. When shipping a circuit board from one place to another, you should first place the board in a(n):
a. vinyl container
b. plastic foam container
c. shielded container
d. antistatic container

8. A customer complains because he has been on hold for so long. What should you do?
a. explain how busy you area
b. give him your direct number
c. tell him the best time to calls
d. apologize for the inconvenience

9. Which of the following statements about PC viruses is not true?
a. the PC is infected only if it boots (or attempts to boot) from an infected disk; or if it executes an infected program
b. viruses are not carried by PC data files
c. some viruses reside in boot sector files
d. the PC can not be infected by attempting to boot from a non-bootable floppy

10. A disgruntled customer is critical of the company that made his equipment, what so you do?
a. agree with him
b. quote statistics to the contrary
c. inquire as to why he feels that way and how you can help
d. tell him it is out of your hands

Answer below:

Answer:

6. d 7. d 8. d 9. d 10. c

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