Ethernet Quiz PDF

True and False Qs. 1) Ethernet was originally developed to support a shared media environment. True False 2) Full-Duplex communication allows hosts to transmit and receive simultaneously. True False...

True and False Qs. 1) Ethernet was originally developed to support a shared media environment. True False 2) Full-Duplex communication allows hosts to transmit and receive simultaneously. True False 3) Half-Duplex communication allows hosts to transmit and receive simultaneously. True False 4) Ethernet utilizes Carrier Sense Multiple Access with Collision Detect (CSMA/CD) on a half- duplex connection. True False 5) If two hosts transmit a frame simultaneously on a shared medium, a collision will occur. True False 6) Once a collision is detected, hosts will send a 32-bit jam sequence to ensure all transmitting hosts are aware of the collision. True False 7) Collided frames are readable and can be processed by the receiving hosts. True False 8) Hosts will wait a random amount of time before resending their frames after a collision. True False 9) Hosts must detect a collision before a frame is finished transmitting for CSMA/CD to function reliably. True False 10) The slot time is the time required to send a specific amount of data from one end of the network and then back. True  False 11) A collision that occurs after the slot time is referred to as an early collision. True False 12) The slot time effectively limits the physical length of the network. True False 13) For 10 and 100Mbps Ethernet, the slot time was defined as 512 bits. True False 14) The slot time for Gigabit Ethernet is 512 bits. True False 15) The slot time defines the minimum Ethernet frame size. True False 16) Hosts can alter or sell the material copyright © 2014 by Aaron Balchunas without consent. True False 17) All other material copyright © of their respective owners can be freely copied and used. True False 18) Updated material may be found at http://www.routeralley.com. True False Multiple Choice Qs. 19) What authentication method does Lightweight Extensible Authentication Protocol (LEAP) employ? A) Biometric authentication B) Username/password authentication C) Smart card authentication D) Token authentication 20) What authentication method was developed by Cisco and is supported by WPA/WPA2 as an 802.1X authentication method? A) EAP-FAST B) LEAP C) PEAP D) EAP-TLS 21) What is the most common type of Ethernet cable? A) Coax cable B) Twisted-pair cable C) Fiber optic cable D) Thicknet cable 22) Which type of twisted-pair cable has six twists per inch? A) Category 3 (Cat3) B) Cat5 C) Cat5e D) Cat6 23) What type of fiber optic cable allows only a single ray of light to travel across it? A) Singlemode fiber B) Multimode fiber C) Coaxial fiber D) Thick fiber 24) What connector is used to connect a device to twisted-pair cable? A) RJ11 connector B) RJ45 connector C) BNC connector D) VGA connector 25) What is used to physically connect devices to thicknet cable? A) Vampire tap B) BNC connector C) RJ45 connector D) Coaxial connector 26) Which type of twisted-pair cable has the least resistance to external EMI? A) Category 3 (Cat3) B) Cat5 C) Cat5e D) Cat6 27) What type of cable uses light to transmit a signal?  A) Coaxial cable B) Twisted-pair cable C) Fiber optic cable D) Thicknet cable 28) What is the purpose of Carrier Sense Multiple Access with Collision Detect (CSMA/CD) in Ethernet? A) To control media access B) To encrypt data transmission C) To increase network speed D) To prevent data loss 29) What happens if two hosts transmit a frame simultaneously in a half-duplex connection? A) A collision will occur B) Data will be encrypted C) The frame will be duplicated D) The frame will be lost 30) What is the purpose of the 32-bit jam sequence sent by hosts after a collision? A) To ensure all transmitting hosts are aware of the collision B) To restart the transmission process C) To increase network speed D) To encrypt data transmission 31) What is the purpose of the backoff timer process in Ethernet? A) To reduce the likelihood of another collision B) To increase network speed C) To encrypt data transmission D) To restart the transmission process 32) What is the purpose of the consistent slot time in Ethernet? A) To ensure proper functioning of CSMA/CD B) To increase network speed C) To encrypt data transmission D) To restart the transmission process 33) What is the minimum slot time for 10 and 100Mbps Ethernet? A) 512 bits, or 64 bytes B) 4096 bits C) 256 bits, or 32 bytes D) 1024 bits 34) What is the purpose of the 32-bit jam sequence sent by hosts after a collision? A) To ensure all transmitting hosts are aware of the collision  B) To restart the transmission process C) To increase network speed D) To encrypt data transmission 35) What is the purpose of the backoff timer process in Ethernet? A) To reduce the likelihood of another collision B) To increase network speed C) To encrypt data transmission D) To restart the transmission process 36) What is the purpose of the consistent slot time in Ethernet? A) To ensure proper functioning of CSMA/CD B) To increase network speed C) To encrypt data transmission D) To restart the transmission process 37) What is the minimum slot time for 10 and 100Mbps Ethernet? A) 512 bits, or 64 bytes B) 4096 bits C) 256 bits, or 32 bytes D) 1024 bits 38) How does Ethernet control media access on a half-duplex connection? A) By utilizing Carrier Sense Multiple Access with Collision Avoidance (CSMA/CA) B) By utilizing Carrier Sense Multiple Access with Collision Detect (CSMA/CD) C) By utilizing Time Division Multiple Access (TDMA) D) By utilizing Frequency Division Multiple Access (FDMA) 39) What is the purpose of the 32-bit jam sequence sent by hosts after a collision in Ethernet communication? A) To acknowledge successful transmission B) To ensure all transmitting hosts are aware of the collision C) To request retransmission of the collided frames D) To indicate the end of the frame transmission 40) What is the primary function of Layer-1 hubs? A) Provide intelligent forwarding B) Process Layer-2 and Layer-3 information C) Physically connect network devices D) Control media access using CSMA/CD 41) What type of Ethernet operation do hubs operate at? A) Full-duplex  B) Half-duplex C) Simplex D) Duplex 42) What is a collision domain? A) A logical segmentation of a network B) A physical segment where a collision can occur C) A broadcast domain D) A network device 43) How do hubs handle frame forwarding? A) Forward frames selectively based on type B) Forward frames to all ports except the originating port C) Discard all frames except broadcasts D) Store frames for later processing 44) How do hubs operate in terms of forwarding frames? A) They forward every frame out every port except the originating port B) They only forward unicast frames C) They analyze Layer-2 and Layer-3 information before forwarding D) They only forward multicast frames Answer Key 1. A 2. A 3. B 4. A 5. A 6. A 7. B 8. A 9. A 10. A 11. B 12. A 13. A 14. B 15. A 16. B 17. A 18. A 19. B 20. B 21. B 22. D 23. A 24. B 25. A 26. A 27. C 28. A 29. A 30. A 31. A 32. A 33. A 34. A 35. A 36. A 37. A 38. B 39. B 40. C 41. B 42. B 43. B 44. A