Chapter 5 Ethernet (802.3) Switched LANs >Business Data Networks and Security, 11e (Panko) > 2023 > Score A+

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1) A local area network operates ________. A) on a customer premises B) between customer premises C) both A and B D) neither A nor B Difficulty: Basic Question: 1 Objective: Describe Ether net termino... logy and standards. AACSB: Applying Information Technology 2) Ethernet standards are specified at the ________ layer. A) physical B) Internet C) both A and B D) neither A nor B Difficulty: Basic Question: 2a Objective: Describe Ethernet terminology and standards. AACSB: Applying Information Technology 3) Ethernet standards are specified at the ________ layer. A) physical B) data link C) both A and B D) neither A nor B Difficulty: Basic Question: 2a Objective: Describe Ethernet terminology and standards. AACSB: Applying Information Technology 4) Ethernet standards are specified at the ________ layer. A) Internet B) transport C) both A and B D) neither A nor B Difficulty: Basic Question: 2a Objective: Describe Ethernet terminology and standards. AACSB: Applying Information Technology 5) Ethernet messages are ________. A) frames B) packets C) segments D) not named Difficulty: Basic Question: 2b Objective: Describe Ethernet terminology and standards. AACSB: Applying Information Technology, Application of Knowledge 6) Ethernet forwarding devices are ________. A) switches B) routers C) access points D) both A and B Difficulty: Basic Question: 2c Objective: Describe Ethernet terminology and standards. AACSB: Applying Information Technology, Application of Knowledge 7) The path a message takes from the source host to the destination device in an Ethernet network is a ________. A) physical link B) data link C) route D) label-switched route Difficulty: Basic Question: 2d Objective: Describe Ethernet terminology and standards. AACSB: Applying Information Technology, Application of Knowledge 8) ________ is the official name for Ethernet addresses. A) MAC B) EUI-48 C) both A and B D) neither A nor B Difficulty: Basic Question: 2e Objective: Describe Ethernet terminology and standards. AACSB: Applying Information Technology, Application of Knowledge 9) Ethernet addresses were formerly called ________ addresses. A) MAC B) EUI-48 C) both A and B D) neither A nor B Difficulty: Deeper Question: 2e Objective: Describe Ethernet terminology and standards. AACSB: Applying Information Technology 10) What organization (most specifically) creates Ethernet standards? A) IEEE B) IETF C) ISO D) OSI Difficulty: Basic Question: 2f Objective: Describe Ethernet terminology and standards. AACSB: Applying Information Technology 11) What 802 Working Group creates Ethernet standards? A) 802.1 B) 802.2 C) 802.3 D) 802.11 Difficulty: Basic Question: 2f Objective: Describe Ethernet terminology and standards. AACSB: Applying Information Technology, Application of Knowledge 12) In this book, we use the terms Ethernet and 802.3 interchangeably. Answer: TRUE Difficulty: Basic Question: 2f Objective: Describe Ethernet terminology and standards. AACSB: Applying Information Technology 13) What type of switch connects users to the network? A) user switches B) core switches C) access switches D) workgroup switches Difficulty: Basic Question: 3a Objective: Describe Ethernet terminology and standards. AACSB: Applying Information Technology, Application of Knowledge 14) What type of switch connects switches to other switches? A) trunk switches B) core switches C) workgroup switches D) none of the above Difficulty: Deeper Question: 3b Objective: Describe Ethernet terminology and standards. AACSB: Applying Information Technology, Application of Knowledge 15) ________ links connect users to workgroup switches. A) Trunk B) Core C) Access D) Workgroup Difficulty: Basic Question: 3c Objective: Describe Ethernet terminology and standards. AACSB: Applying Information Technology, Application of Knowledge 16) ________ links connect switches to other switches. A) Trunk B) Long C) Access D) Workgroup Difficulty: Basic Question: 3d Objective: Describe Ethernet terminology and standards. AACSB: Applying Information Technology, Application of Knowledge 17) Trunk links connect switches to ________ switches. A) core B) workgroup C) both A and B D) neither A nor B Difficulty: Deeper Question: 3d Objective: Describe Ethernet terminology and standards. AACSB: Applying Information Technology, Application of Knowledge 18) Physical layer standards govern ________. A) signaling B) physical connectors C) both A and B D) neither A nor B Difficulty: Basic Question: 4 Objective: Describe basic physical propagation concepts. AACSB: Applying Information Technology, Application of Knowledge 19) Physical layer standards govern ________. A) signaling B) frames C) packets D) all of the above Difficulty: Basic Question: 4 Objective: Describe basic physical propagation concepts. AACSB: Applying Information Technology, Application of Knowledge 20) In digital signaling, there is (are) ________ state(s). A) one B) only two C) a small number of D) an infinite number of Difficulty: Basic Question: 5a Objective: Describe basic physical propagation concepts. AACSB: Applying Information Technology 21) In binary signaling, there is (are) ________ state(s). A) one B) two C) between three and ten D) an infinite number of Difficulty: Basic Question: 5a Objective: Describe basic physical propagation concepts. AACSB: Applying Information Technology 22) To transmit three bits per clock cycle, you must have ________ states. A) 3 B) 6 C) 8 D) 16 Difficulty: Deeper Question: 5b Objective: Describe basic physical propagation concepts. AACSB: Applying Information Technology, Analytical Thinking, Application of Knowledge 23) To transmit five bits per clock cycle, you must have ________ states. A) 5 B) 16 C) 32 D) none of the above Difficulty: Deeper Question: 5c Objective: Describe basic physical propagation concepts. AACSB: Applying Information Technology, Analytical Thinking, Application of Knowledge 24) A system with 16 states can transmit ________ bits per clock cycle A) 3 B) 4 C) 5 D) none of the above Difficulty: Deeper Question: 5d Objective: Describe basic physical propagation concepts. AACSB: Applying Information Technology, Analytical Thinking, Application of Knowledge 25) The 802.11ac Wi-Fi standard uses 256 states. How many bits can it send per clock cycle? A) 8 B) 16 C) 32 D) none of the above Difficulty: Deeper Question: 5e Objective: Describe basic physical propagation concepts. AACSB: Applying Information Technology, Analytical Thinking, Application of Knowledge 26) If you double the number of states, you can transmit ________ more bit(s) per clock cycle. A) 1 B) 2 C) 4 D) none of the above Difficulty: Basic Question: 5f Objective: Describe basic physical propagation concepts. AACSB: Applying Information Technology, Analytical Thinking, Application of Knowledge 27) Signal state is held constant in a clock cycle ________. A) for energy efficiency B) to make it easier for the receiver to sample the state C) to emphasize differences between clock cycles D) none of the above Difficulty: Deeper Question: 5g Objective: Describe basic physical propagation concepts. AACSB: Applying Information Technology, Analytical Thinking, Application of Knowledge 28) How long (in milliseconds) is a clock cycle if I transmit 400 Mbps with four states? A) 0. B) 0.0025 C) 0.005 D) none of the above Difficulty: Deeper Question: 5h Objective: Describe basic physical propagation concepts. AACSB: Applying Information Technology, Analytical Thinking, Application of Knowledge 29) What type of copper wiring is widely used in Ethernet? A) optical fiber B) 4-pair UTP C) both A and B D) neither A nor B Difficulty: Basic Question: 6a Objective: Explain the technologies of 4-pair UTP and optical fiber. AACSB: Applying Information Technology, Application of Knowledge 30) How many wires are there is a UTP Ethernet cord? A) 1 B) 2 C) 4 D) 8 Difficulty: Basic Question: 6a Objective: Explain the technologies of 4-pair UTP and optical fiber. AACSB: Applying Information Technology 31) In 4-pair UTP, what is twisted? A) individual wires B) pairs of wires C) all eight wires D) none of the above Difficulty: Deeper Question: 6b Objective: Explain the technologies of 4-pair UTP and optical fiber. AACSB: Applying Information Technology, Application of Knowledge 32) 4-pair UTP terminates in a(n) ________ connector. A) USB B) RJ-45 C) SC D) standard telephone Difficulty: Basic Question: 6c Objective: Explain the technologies of 4-pair UTP and optical fiber. AACSB: Applying Information Technology, Application of Knowledge 33) Four-pair UTP uses ________ connectors. A) universal B) binary C) ST or SC D) none of the above Difficulty: Deeper Question: 6c Objective: Explain the technologies of 4-pair UTP and optical fiber. AACSB: Applying Information Technology, Analytical Thinking, Application of Knowledge 34) Optical fiber cords use two strands ________. A) for reliability through redundancy B) to form a complete electrical loop C) to double the transmission speed D) for full-duplex transmission Difficulty: Deeper Question: 6d Objective: Explain the technologies of 4-pair UTP and optical fiber. AACSB: Applying Information Technology, Application of Knowledge 35) The ability to transmit in two directions simultaneously is ________. A) parallel communication B) full-duplex communication C) both A and B D) neither A nor B Difficulty: Deeper Question: 6d Objective: Explain the technologies of 4-pair UTP and optical fiber. AACSB: Applying Information Technology, Application of Knowledge 36) The main benefit of parallel transmission over serial transmission is ________. A) reliability B) speed C) both A and B D) neither A nor B Difficulty: Deeper Question: 6e Objective: Explain the technologies of 4-pair UTP and optical fiber. AACSB: Applying Information Technology, Analytical Thinking, Application of Knowledge 37) What problem limits transmission distance in 4-pair UTP? A) reflection at the two ends B) heat conduction C) radiation D) none of the above Difficulty: Basic Question: 6f Objective: Explain the technologies of 4-pair UTP and optical fiber. AACSB: Applying Information Technology, Analytical Thinking, Application of Knowledge 38) UTP categories rate the ________ of UTP cabling. A) quality B) speed C) quality-of-service performance D) error performance Difficulty: Basic Question: 7a Objective: Explain the technologies of 4-pair UTP and optical fiber. AACSB: Applying Information Technology 39) CAT 5e and CAT 6 wiring can carry Ethernet traffic 100 meters up to ________. A) 10 Mbps B) 100 Mbps C) 1 Gbps D) 10 Gbps Difficulty: Deeper Question: 7a Objective: Explain the technologies of 4-pair UTP and optical fiber. AACSB: Applying Information Technology, Analytical Thinking, Application of Knowledge 40) Which UTP quality levels can send signals at 10 gigabits per second? A) category 6 B) category 6A C) both A and B D) neither A nor B Difficulty: Deeper Question: 7a Objective: Explain the technologies of 4-pair UTP and optical fiber. AACSB: Applying Information Technology, Analytical Thinking, Application of Knowledge 41) Which UTP quality levels are needed to send signals 100 meters at 10 gigabits per second? A) category 6 B) category 6A C) both A and B D) neither A nor B Difficulty: Deeper Question: 7a Objective: Explain the technologies of 4-pair UTP and optical fiber. AACSB: Applying Information Technology, Analytical Thinking, Application of Knowledge 42) For what specific purpose were the 2.5GBASE-T and 5GBASE-T standards developed? A) general growth in demand for Ethernet speed B) serving access points C) to provide lower-cost service than 10G-BASE-T D) none of the above Difficulty: Basic Question: 8 Objective: Explain the technologies of 4-pair UTP and optical fiber. AACSB: Applying Information Technology, Application of Knowledge 43) In optical fiber, light travels through the ________. A) core B) cladding C) both A and B Difficulty: Deeper Question: 9a Objective: Explain the technologies of 4-pair UTP and optical fiber. AACSB: Applying Information Technology, Analytical Thinking, Application of Knowledge 44) Optical fiber cords typically have two fiber strands. This is done to allow ________. A) redundancy B) total redundancy C) half-duplex operation D) full-duplex operation Difficulty: Basic Question: 9b Objective: Explain the technologies of 4-pair UTP and optical fiber. AACSB: Applying Information Technology, Application of Knowledge 45) The distance between two corresponding points in adjacent cycles is the ________. A) frequency B) wavelength C) bandwidth D) span Difficulty: Basic Question: 9c Objective: Explain the technologies of 4-pair UTP and optical fiber. AACSB: Applying Information Technology 46) Which light wavelength dominates in LANs? A) 850 nm B) 1,310 nm C) 1,550 nm D) 1 Gbps Difficulty: Basic Question: 9d Objective: Explain the technologies of 4-pair UTP and optical fiber. AACSB: Applying Information Technology, Application of Knowledge 47) The strength of a wave is its ________. A) amplitude B) frequency C) wavelength D) force Difficulty: Basic Question: 9e Objective: Explain the technologies of 4-pair UTP and optical fiber. AACSB: Applying Information Technology 48) ________ occurs when the light energies of two pulses arrive at the far end at overlapping times. A) Multimode transmission B) Modal bandwidth C) Modal dispersion D) Modal interference Difficulty: Deeper Question: 10a Objective: Explain the technologies of 4-pair UTP and optical fiber. AACSB: Applying Information Technology, Analytical Thinking, Application of Knowledge 49) ________ describe light entering a fiber's core at different angles. A) Co-cycle waves B) Harmonics C) Divergences D) Different modes Difficulty: Basic Question: 10b Objective: Explain the technologies of 4-pair UTP and optical fiber. AACSB: Applying Information Technology, Application of Knowledge 50) Which core diameter is used in multimode fiber. A) 50 microns B) 8 microns C) 50 mm D) 8 mm Difficulty: Deeper Question: 10b Objective: Explain the technologies of 4-pair UTP and optical fiber. AACSB: Applying Information Technology, Analytical Thinking, Application of Knowledge 51) Modal dispersion limits transmission distance in ________. A) multimode fiber B) single-mode fiber C) both A and B D) neither A nor B Difficulty: Deeper Question: 10c Objective: Explain the technologies of 4-pair UTP and optical fiber. AACSB: Applying Information Technology, Application of Knowledge 52) ________ fiber is being sold today. A) OM2 B) OM4 C) both A and B D) neither A nor B Difficulty: Basic Question: 11a Objective: Explain the technologies of 4-pair UTP and optical fiber. AACSB: Applying Information Technology 53) If a physical link can use either 4-pair UTP, multimode fiber, or single-mode fiber, which should I use? A) 4-pair UTP B) multimode fiber C) single-mode fiber D) none of the above Difficulty: Basic Question: 11b Objective: Explain the technologies of 4-pair UTP and optical fiber. AACSB: Applying Information Technology, Analytical Thinking, Application of Knowledge 54) What is the quality designator for multimode optical fiber? A) Cat B) OM C) both A and B D) neither A nor B Difficulty: Basic Question: 11g Objective: Explain the technologies of 4-pair UTP and optical fiber. AACSB: Applying Information Technology, Application of Knowledge 55) Two switches that are 200 m apart at a speed of 20 Gbps should be connected using ________. A) 10GBASE-SR B) 100GBASE-SR C) 10GBASE-SR with bonding D) 100GBASE-SR with bonding Difficulty: Deeper Question: 12b Objective: Explain the technologies of 4-pair UTP and optical fiber. AACSB: Applying Information Technology, Analytical Thinking, Application of Knowledge 56) Fiber that has a core diameter of 8.3 microns is ________. A) multimode fiber B) single-mode fiber C) full duplex fiber D) exceptionally fast Difficulty: Basic Question: 14a Objective: Explain the technologies of 4-pair UTP and optical fiber. AACSB: Applying Information Technology, Application of Knowledge 57) The longest transmission distances are possible with ________. A) USB B) UTP C) single-mode fiber D) multimode fiber Difficulty: Basic Question: 14b Objective: Explain the technologies of 4-pair UTP and optical fiber. AACSB: Applying Information Technology, Application of Knowledge 58) Which of the following is used most often in LANs for fiber transmission links? A) modal bandwidth fiber B) 1.550 nm fiber C) single-mode fiber D) multimode fiber Difficulty: Basic Question: 14b Objective: Explain the technologies of 4-pair UTP and optical fiber. AACSB: Applying Information Technology, Application of Knowledge 59) Which of the following is used most often in LANs for fiber transmission links? A) 850 nm multimode fiber B) 850 nm single-mode fiber C) 850 nm multimode-mode fiber D) 1,550 nm single-mode fiber Difficulty: Basic Question: 14b Objective: Explain the technologies of 4-pair UTP and optical fiber. AACSB: Applying Information Technology, Application of Knowledge 60) 850 nm multimode fiber is used in LANs ________. A) to keep cost low B) to have the longest transmission distances C) both A and B D) neither A nor B Difficulty: Deeper Question: 14d Objective: Explain the technologies of 4-pair UTP and optical fiber. AACSB: Applying Information Technology, Application of Knowledge 61) At what layer is the 100BASE-TX standard? A) physical B) data link C) Internet D) physical and data link Difficulty: Deeper Question: 15a Objective: Design a physical Ethernet network based on traffic requirements. AACSB: Applying Information Technology, Application of Knowledge 62) UTP and fiber distance limits are for ________. A) physical links B) data link C) Internet routes D) physical and data link Difficulty: Deeper Question: 15a Objective: Design a physical Ethernet network based on traffic requirements. AACSB: Applying Information Technology, Analytical Thinking, Application of Knowledge 63) If you can span the distance between two switches with either a single optical fiber link or two UTP lengths with an intermediate switch, which should you choose? A) single optical fiber link B) two UTP cords with an intermediate switch C) both are equally attractive D) neither will work Difficulty: Deeper Question: 15c Objective: Design a physical Ethernet network based on traffic requirements. AACSB: Applying Information Technology, Application of Knowledge 64) To span the distance between two switches, why is adding an intermediate switch not an attractive choice? A) latency B) errors C) speed restrictions D) expense Difficulty: Deeper Question: 15e Objective: Design a physical Ethernet network based on traffic requirements. AACSB: Applying Information Technology, Analytical Thinking, Application of Knowledge 65) A switch knows the entire data link between the source and destination hosts. Answer: FALSE Difficulty: Basic Question: 16a Objective: Explain Ethernet data link layer operation. AACSB: Applying Information Technology, Analytical Thinking 66) The switch knows the type of device it is forwarding a frame to. Answer: FALSE Difficulty: Deeper Question: 16b Objective: Explain Ethernet data link layer operation. AACSB: Applying Information Technology, Analytical Thinking 67) In Ethernet, switches are organized in a ________. A) ring B) mesh C) hierarchy D) any of the above Difficulty: Basic Question: 17a Objective: Explain Ethernet data link layer operation. AACSB: Applying Information Technology 68) In large Ethernet networks, there can be ________ possible data links between two hosts. A) 1 B) 2 C) 3 D) many Difficulty: Basic Question: 17b Objective: Explain Ethernet data link layer operation. AACSB: Applying Information Technology, Application of Knowledge 69) Having only a single possible path between devices ________. A) reduces switching cost B) provides reliability C) reduces errors D) none of the above. Difficulty: Deeper Question: 18a Objective: Explain Ethernet data link layer operation. AACSB: Applying Information Technology, Analytical Thinking, Application of Knowledge 70) Ethernet became the dominant LAN technology because of ________. A) low cost B) high speed C) link reliability D) agility Difficulty: Deeper Question: 18b Objective: Explain Ethernet data link layer operation. AACSB: Applying Information Technology, Application of Knowledge 71) EUI-48 addresses in expressed in hexadecimal notation if used by ________. A) switches B) routers C) both A and B D) neither A nor B Difficulty: Deeper Question: 19a Objective: Explain Ethernet data link layer operation. AACSB: Applying Information Technology, Analytical Thinking, Application of Knowledge 72) Which of the following letters may appear in EUI-48 addresses? A) D B) H C) both A and B D) neither A nor B Difficulty: Basic Question: 19b Objective: Explain Ethernet data link layer operation. AACSB: Applying Information Technology, Analytical Thinking, Application of Knowledge 73) What is 9 hex in binary? A) 1000 B) 1001 C) 1010 D) 1111 Difficulty: Deeper Question: 19d Objective: Explain Ethernet data link layer operation. AACSB: Applying Information Technology, Analytical Thinking, Application of Knowledge 74) What is F hex in binary? A) 1001 B) 1010 C) 1111 D) none of the above Difficulty: Basic Question: 19e Objective: Explain Ethernet data link layer operation. AACSB: Applying Information Technology, Analytical Thinking, Application of Knowledge 75) What is binary 0010 in hex? A) 1 B) 2 C) 3 D) none of the Above Difficulty: Basic Question: 19g Objective: Explain Ethernet data link layer operation. AACSB: Applying Information Technology, Analytical Thinking, Application of Knowledge 76) What is binary 0000 in hex? A) 0 B) 1 C) 15 D) 16 Difficulty: Deeper Question: 19h Objective: Explain Ethernet data link layer operation. AACSB: Applying Information Technology, Analytical Thinking, Application of Knowledge 77) What is binary 1111 in hex? A) 10 B) 13 C) 14 D) 15 Difficulty: Basic Question: 19i Objective: Explain Ethernet data link layer operation. AACSB: Applying Information Technology, Analytical Thinking, Application of Knowledge 78) The two tag frames provide information about ________. A) transmission media B) the length of Jumbo packets C) priority D) all of the above Difficulty: Basic Question: 20a Objective: Explain Ethernet data link layer operation. AACSB: Applying Information Technology, Application of Knowledge 79) The PAD field is added by the ________ if the frame is too short without it. A) sender B) receiver C) both A and B D) neither A nor B Difficulty: Deeper Question: 20b Objective: Explain Ethernet data link layer operation. AACSB: Applying Information Technology, Application of Knowledge 80) To manage their Ethernet networks, companies rely on ________. A) SNMP B) HTTP C) FTTH D) none of the above Difficulty: Basic Question: 21a Objective: Describe Ethernet management. AACSB: Applying Information Technology, Application of Knowledge 81) All Ethernet switches are manageable. Answer: FALSE Difficulty: Basic Question: 21c Objective: Describe Ethernet management. AACSB: Applying Information Technology, Analytical Thinking, Application of Knowledge 82) Ethernet has reliability issues because of its ________. A) too-simple switch operation B) hierarchical organization C) both A and B D) neither A nor B Difficulty: Basic Question: 22a Objective: Describe Ethernet management. AACSB: Applying Information Technology, Analytical Thinking, Application of Knowledge 83) RSTP ________. A) can increase reliability B) was created to break accidental loops C) both A and B D) neither A nor B Difficulty: Basic Question: 22b Objective: Describe Ethernet management. AACSB: Applying Information Technology, Analytical Thinking, Application of Knowledge 84) Using RSTP to provide backup links in Ethernet ________. A) is automatic B) is simple C) is challenging D) is impossible Difficulty: Basic Question: 22c Objective: Describe Ethernet management. AACSB: Applying Information Technology, Analytical Thinking, Application of Knowledge 85) Which of the following provides security in Ethernet? A) RSTP B) SNMP C) VLANs D) all of the above Difficulty: Basic Question: 23a Objective: Describe Ethernet security. AACSB: Applying Information Technology, Analytical Thinking, Application of Knowledge 86) To prevent anyone from simply walking up to a corporate switch and plugging their computer into its Ethernet port, companies can use ________. A) 802.1X B) SNMP C) VLANs D) 802.1AE Difficulty: Basic Question: 24a Objective: Describe Ethernet security. AACSB: Applying Information Technology, Application of Knowledge 87) When a user attempts to plug into an Ethernet switch protected by 802.1X, ________. A) the switch will freeze B) the switch port will freeze C) the user will be required to authenticate himself or herself D) none of the above Difficulty: Basic Question: 24b Objective: Describe Ethernet security. AACSB: Applying Information Technology, Application of Knowledge 88) To prevent an unauthorized user from sending supervisory commands to switches, companies use ________. A) 802.1X B) SNMP C) VLANs D) 802.1AE Difficulty: Basic Question: 25 Objective: Describe Ethernet security. AACSB: Applying Information Technology, Application of Knowledge 89) The ARP cache gives the ________ of a router the host will send a packet to. A) IP address B) EUI-48 address C) MAC address D) host name Difficulty: Deeper Question: 26a Objective: Describe Ethernet security. AACSB: Applying Information Technology, Analytical Thinking, Application of Knowledge 90) After an ARP cache poisoning attack, the ARP cache gives the ________. A) IP address of the router the user wishes to send to B) EUI-48 address of the router the user wishes to send to C) IP address of the router the MITM attacker D) EUI-48 address of the router the MITM attacker Difficulty: Deeper Question: 26b Objective: Describe Ethernet security. AACSB: Applying Information Technology, Analytical Thinking, Application of Knowledge 91) ARP cache poisoning is ________. A) a DoS attack B) a DDoS attack C) an illegal login attack D) a man-in-the middle attack Difficulty: Basic Question: 26c Objective: Describe Ethernet security. AACSB: Applying Information Technology, Analytical Thinking, Application of Knowledge [Show More]

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