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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
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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
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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.
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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
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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.
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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.
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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.
- Hubs restrict the number of physical ports to at most eight.
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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
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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
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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.
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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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