Week 8: Straight-through and Cross-over Flashcards
(13 cards)
What is the primary function of a crimping tool in networking?
A. To test cable speed
B. To cut cables
C. To join wires to connectors securely
D. To measure voltage
C. To join wires to connectors securely
Explanation: A crimping tool deforms the connector onto the wire, creating a secure and reliable connection.
What does a LAN tester help identify?
A. IP conflicts
B. Cable faults like broken wires or short circuits
C. Router firmware issues
D. Network speed
B. Cable faults like broken wires or short circuits
Explanation: A LAN tester checks the integrity and wiring of Ethernet cables, identifying faults like shorts or missing pairs.
What is an RJ45 connector used for?
A. Connecting fiber cables
B. Connecting Ethernet cables to network devices
C. Powering devices
D. Testing voltage
B. Connecting Ethernet cables to network devices
Explanation: RJ45 is an 8-pin connector used to connect Ethernet cables to devices like routers and switches.
What is the main feature of UTP (Unshielded Twisted Pair) cables?
A. They have a metal shield
B. They are used only for telephone lines
C. They reduce interference through wire twisting
D. They are fiber optic cables
C. They reduce interference through wire twisting
Explanation: UTP cables use twisted pairs of wires to reduce electromagnetic interference and crosstalk.
What distinguishes STP from UTP cables?
A. STP is wireless
B. STP has additional shielding
C. UTP is faster
D. UTP is more expensive
B. STP has additional shielding
Explanation: Shielded Twisted Pair (STP) cables include foil or braided shielding to reduce interference more effectively than UTP.
Which cable category supports speeds up to 10 Gb/s?
A. Cat 3
B. Cat 5
C. Cat 5e
D. Cat 6
D. Cat 6
Explanation: Cat 6 cables can support speeds up to 10 Gb/s, though it’s not always recommended for long distances.
Which cable type is used to connect a PC to a switch?
A. Crossover
B. Rollover
C. Straight-through
D. Fiber optic
C. Straight-through
Explanation: A straight-through cable (both ends T568A or T568B) connects a host (like a PC) to a network device (like a switch).
What is the purpose of a crossover cable?
A. Connects a PC to a printer
B. Connects two similar devices like switch-to-switch
C. Connects a router to the internet
D. Connects a PC to a console port
B. Connects two similar devices like switch-to-switch
Explanation: Crossover cables (one end T568A, the other T568B) are used to connect similar devices like switch-to-switch or PC-to-PC.
What is a rollover cable used for?
A. Connecting two PCs
B. Connecting a router to a switch
C. Connecting a PC to a router’s console port
D. Connecting a printer to a network
C. Connecting a PC to a router’s console port
Explanation: Rollover cables are used to connect a workstation’s serial port to a router’s console port for configuration.
In a straight-through cable, what is the function of pin 1 on a computer?
A. Transmit +
B. Receive +
C. Transmit -
D. Receive -
A. Transmit +
Explanation: In a straight-through cable, pin 1 on a computer is used for Transmit +, which connects to pin 1 (Receive +) on the router or switch.
Which pins are used for transmitting data in a straight-through cable from a computer?
A. Pins 1 and 2
B. Pins 3 and 6
C. Pins 4 and 5
D. Pins 7 and 8
A. Pins 1 and 2
Explanation: Pins 1 and 2 are used for transmitting data in a straight-through cable from a computer.
What is the key difference in wiring between the two ends of a crossover cable?
A. The colors are reversed
B. The transmit and receive pairs are swapped
C. The cable is longer
D. The shielding is removed
B. The transmit and receive pairs are swapped
Explanation: In a crossover cable, the transmit and receive wire pairs are swapped to allow direct communication between similar devices.
Which color wire is connected to pin 1 on side one of a crossover cable?
A. White Green
B. White Orange
C. Green
D. Orange
B. White Orange
Explanation: On side one of a crossover cable, pin 1 is typically White Orange, which connects to pin 3 (White Green) on the other side.
