Business Data Networks and Security 11th Edition Raymond R. Panko, Julia L. Panko - Solutions

a. If a sub-net part is X bits long, how many sub-nets can you have?1a.) If your sub-net part is 8 bits long, you can have ______ sub-nets.a. 64b. 128c. 256d. 254b. If you have a sub-net part of 9 bits, how many sub-nets can you have?1b.) If you have a sub-net part of 7 bits, how many sub-nets can
a. Why can TCP handle long application messages?25a.) Which of the following can handle an application message that is one megabyte in size?a. TCPb. UDPc. Both A and Bd. Neither A nor Bb. Why can UDP not handle long application messages?c. What is the maximum application message size when UDP is
a. What is a FIN segment?25a.) A TCP _______ segment is a request to the other transport process to close a connection.a. FINb. ACKc. CLSd. SYNb. Distinguish between four-way closes and abrupt resets.25b1.) Four-way closes use _______ segments.a. FINb. RSTc. Either A or Bd. Neither A nor B25b2.) An
a. How long are sequence and acknowledgment numbers?24a.) Sequence numbers are ______ bits longa. 8b. 16c. 24d. 32b. How many flag fields do TCP headers have?24b1.) One-bit fields are called ______ fields.a. SYNb. Flagc. ACKd. None of the above24b2.) TCP has ______ flag field(s).a. 1b. 2c. 6d.
a. Why is handling options the way that IPv4 does undesirable?23a) Which has a better system for handling options beyond the main header?a. IPv4b. IPv6c. Both use the same method.d. Neither can handle options.b. Why is the approach of using optional extension headers desirable?c. What is often the
a. How do the Version Number Fields in IPv4 and IPv6 differ?22a.) The version number field in IPv6 has the value ______.a. 0001b. 0100c. 0101d. 0110b. What is the general purpose of the DiffServ sub-field?22b.) The Diffsderv field in IPv4 is for ______.a. Congestionb. Compressionc. Quality of
a. Write the following IPv6 address in canonical form using RFC 5952: 2001:0ed2:056b:00d3:000c:abcd:0bcd:0fe0.21a.) If I simplify the address 2001:0000:0000:00fe:0000:0000:0000:cdef, I get ________.a. 2001:0:0:fe::cdefb. 2001::fe:0:0:0:cdefc. 2001:0:0:fe:0:0:0:cdefd. 2001::00fe:0::cdefb. Write
a. Why are IPv6 addresses simplified?20a.) IPv6 addresses are simplified ________.a. To simplify writingb. To simplify memorizationc. Both A and Bd. Neither A nor Bb. Why must simplification rules be followed precisely?20b.) Simplification of IPv6 addresses must be standardized ________.a. To
a. What has been holding back the adoption of IPv6?19a.) What is pushing IPv6 adoption now?a. Pressure from ISPsb. Pressure from the IETFc. Pressure from ISOd. None of the above
a. What is the main problem with IPv4 that IPv6 was created to solve?18a1.) The version of Internet Protocol that is growing rapidly is IP version _______.a. 1b. 2c. 4d. None of the above18a2.) Which is a problem with IPv4 addresses?a. They are incompatible with wireless devices.b. They are too
What problem is caused by the way that IPv4 handles options?
a. What does a router do if it receives a packet with a TTL value of 2?16a.) A router will discard a packet if the Time to Live (TTL) value in an arriving packet is ______.a. 0b. 1c. 254d. 256b. What does the next router do?c. What does the Protocol Field value tell the destination host?16c.) In an
a. Distinguish between application message fragmentation and packet fragmentation.b. Under what circumstances would the identification, flags, and fragment offset fields be used in IP?15b.) The identification field in IPv4 is used for _________.a. Route fragmentationb. Frame fragmentationc.
a. What is the main version of the Internet Protocol in use today?14a.) The main version of Internet Protocol in use today is IP version _______.a. 1b. 4c. 5d. 6b. Which IPv4 header component can be used to specify quality of service?c. How can the ECN Field be used?14c.) In IPv4, the _______ field
An arriving packet has the destination IPv4 address 128.171.180.13. Row 86 has the destination value 128.171.160.0. The row’s mask is 255.255.224.0. Does this row match the destination IPv4 address? Show your work. You can use the Windows Calculator if you have a Windows PC. In Windows Vista and
a. What should a router do if it receives several packets going to the same destination IPv4 address?12a.) If a router receives 20 packets in a row going to the same destination IP address, the standard calls for it to _______.a. Go through all three steps for eachb. Use the decision it made for
a. Distinguish between Step 2 and Step 3 in routing.11a.) Deciding what interface and to what device to send the packet back out is step _________ in the routing process.a. 1b. 2c. 3d. None of the aboveb. What are router ports called?11b.) Router ports are called _________.a. Socketsb. Plugsc.
a. Distinguish between Step 1 and Step 2 in the routing process.10a1.) The first step in the routing process involves _________.a. Selecting the best match rowb. Comparing the packet's destination IP address to all rowsc. Comparing the packet's destination IP address to matching rowsd. Selecting an
a. In Figure 8-11, how will a router test whether Row 3 matches the IPv4 address 60.168.6.7? Show the calculations in the format given in Figure 8-12. b. Is the row a match?c. Why is the last row called the default row?9c.) If no other row matches, the router will select the _______ row
a. In a routing table, what does a row represent?8a.) In a routing table, a _________ represents a route for a group of IP addressesa. Rowb. Columnc. Schemad. Metricb. Do Ethernet switches have a row for each individual Ethernet address?8b.) There is a row for each host address in a(n) _________.a.
a. Why are routing tables more complex than Ethernet switching tables? Give a detailed answer.7a.) The Internet is organized in a ________.a. Hierarchyb. Ringc. Meshd. None of the above
a. A mask has eight 1s, followed by 0s. Express this mask in dotted decimal notation.6a.) In the mask 255.255.255.0, how many 1s are there?a. 8b. 16c. 24d. It cannot be determined from the information given.b. Express this mask in prefix notation.6b.) In the mask /14, how many 1s are there?a. 8b.
a. How many bits are there in an IPv4 mask?5a.) A mask has _____ bits.a. 8b. 16c. 32d. It cannot be determined from the information given.b. What do the 1s in an IPv4 network mask correspond to in IPv4 addresses?5b.) In a network mask, the 1s correspond to the _____ .a. Network partb. Sub-net
A router that has the routing table in Figure 8-11 receives an incoming IPv4 packet. The source IPv4 address in the arriving packet is 10.55.72.234. The destination IPv4 address is 10.4.6.7. The TTL value is 1. The Protocol Field value is 6. What will the router do with this packet?
a. Connecting different networks is the main job of what type of router?4a.) A border router connects different IP ________.a. Sub-netsb. Networksc. Both A and Bd. Neither A nor Bb. What type of router connects different sub-nets?4b.) An internal router connects different IP ________.a. Sub-netsb.
A client PC has two simultaneous connections to the same web-server application program on a web-server. (Yes, this is possible, and in fact, it is rather common.) What will be different between the TCP segments that the client sends on the two connections?
a. What are the three parts of an IPv4 address?3a.) Which of the following is one of the three parts of an IPv4 address?a. Sub-net partb. Sub-net maskc. Both A and Bd. Neither A nor Bb. How long is each part?3b.) The network part of an IPv4 address is _______ bits long.a. 8b. 16c. 32d. It cannot be
a. What are interfaces?2a.) Router sockets for wire and optical fiber cords are called ______.a. Socketsb. Plugsc. Interfacesd. Portsb. Explain the network adage “Switch where you can; route where you must.”2b.) For cost reasons, you should ______ where you can, ______ where you must.a. Switch;
a. How does the postal service use hierarchical sorting?b. How does this simplify delivery decisions?
a. Which two layers standardize Ethernet and Wi-Fi operation?1a.) Ethernet standards are set at the ______.a. Physical layerb. Transport layerc. Both A and Bd. Neither A nor Bb. Which two layers standardize most of the Internet’s operation?1b.) TCP/IP standards are set at the ______.a. Physical
a. Why is a short transmission range not a protection against eavesdroppers?21a.) In IoT device transmission, published distance limits are relevant for _______.a. Legitimate usersb. Hackersc. Both A and Bd. Neither A nor Bb. Describe the state of cryptographic security for new transmission
a. What kind of network is Zigbee used for?20a.) Zigbee is designed to be used in a(n) ______ networkb. One-to onec. Hierarchicald. Multi-pointe. ad hocb. Compare the roles of Zigbee controllers, Zigbee end devices, and Zigbee routers. In what radio bands does Zigbee operate?20b1.) In Zigbee, ad
a. How is the access point used in Wi-Fi Direct?19a.) Wi-Fi direct ______uses access points.a. Alwaysb. Usuallyc. Rarelyd. Never
a. When two devices communicate using NFC, how close must they be?18a.) When two devices communicate using NFC, how close must they be?a. A few inchesb. Up to 5 feetc. Up to 10 feetd. Up to 50 feetb. How does near field communication differ from normal radio communication?c. Passive RFID chips have
a. What is a typical speed, distance, and power consumption for Bluetooth LE slaves?17a.) Bluetooth LE ________.a. Uses about 0.1 to 0.5 wattsb. Assumes that transmissions will be infrequentc. Has terse connection openingsd. All of the aboveb. What are Bluetooth L E advertising messages?17b.) In
a. Why would it be nice if Wi-Fi offered a basic printing profile?16a.) If Wi-Fi supported the basic printing profile, ________.a. Documents could be printed without downloading driversb. Printer drivers would be downloaded automaticallyc. Printing would use two layers of driversd. None of the
a. What does it mean that Bluetooth uses one-to-one operation?15a.) Bluetooth uses _______ operation.a. All-to-allb. Point-to-multi-pointc. One-to-alld. One-to-oneb. Is this still true if a master communicates with four slaves simultaneously?15b.) If a master has multiple slaves, Bluetooth will use
a. What is a PAN? (Do not just spell out the abbreviation.)14a.) A group of devices on a desk that communicate wirelessly is called a _________.a. LANb. WANc. MANd. PANb. Compare the relative benefits of the two types of Classic Bluetooth.14b.) Classic Bluetooth provides transmission speeds of
a. Why is low speed and short distance usually good in the Internet of Things?13a.) IoT transmissions usually involve _______.a. High transmission speedsb. Low transmission distancesc. Both A and Bd. Neither A nor Bb. Is there a single dominant IoT communication standard?13b.) The _______ standard
a. Fill in the missing values in 7-16 Approximate, without using Excel, the decibel value for a ratio ofb. 8:1. Fill in the missing values in 7-16 Approximate, without using Excel, the decibel value for a ratio of12b.) An 8/1 increase in power corresponds to approximately ______ decibels.a. 3b. 6c.
a. The power level at 10 meters is 100 mW. At 20 meters, it is 5 mW. How many decibels has it lost?11a.) Which is the correct formula for decibels?a. 10 × P2/P1b. 10 × (P2/P1)2c. Log10(P2/P1)d. None of the aboveb. Compared to an omni-directional antenna, a dish antenna quadruples radiated
a. How might a security administrator use SNMP Get commands to access points?10a.) A security might use SNMP Get commands to _______.a. Change an access point’s powerb. Vollect information to look for a rogue access pointc. Both A and Bd. Neither A nor B10a.) A security might use SNMP Set
a. Describe the process by which access point locations are determined.9a.) Selecting locations for access points first involves _______.a. Laying out circles of a chosen diameter in a diagram of the buildingb. Doing a wireless site surveyc. Selecting locations that reflect organizational unitsd.
a. What kind of physical device is an evil twin access point?8a1.) An evil twin access point is usually _______.a. A reprogrammed access pointb. A laptop computerc. A rogue access pointd. Any of the above8a2.) If a company uses 802.11i for its core security protocol, an evil twin access point will
a. Who creates a rogue access point?7a1.) An unauthorized internal access point is a(n) ______ access point.a. Evil twinb. Shadowc. Rogued. None of the above7a2.) A rogue access point usually is created by ______.a. An employeeb. An external attackerc. The IT security departmentd. An evil
a. What initial authentication mode does 802.11i use? 6a.) What initial authentication mode does 802.11i use?a. 802.1Xb. PSKc. Both A and Bd. Neither A nor Bb. Which initial authentication mode is used for message-by-message encryption, authentication, and message integrity? 6b.) Which
a. Contrast the use scenarios for initial authentication in P S K mode and 802.1X mode.5a.) If a firm has many access points, it should use _________ initial authentication mode in 802.11i.a. PSKb. 802.1Xc. IP secd. WPAb.Which initial authentication mode or modes of 802.11i authentication use(s) a
Create a policy for 802.11 Wi-Fi security in a wireless network in a five-person company with one access point. This is not a trivial task. Do not just jot down a few notes. Make it a one-page document for people in your firm to read, not something for your teacher to read.
a. For what use scenario was 802.11i PSK initial authentication mode created?b. What must a user know to authenticate his or her device to the access point?4b.) In 802.11i _________, hosts must know a shared initial key.a. 802.1X initial authentication modeb. PSK initial authentication modec. Both
(If you read the box, “Expressing power ratios in decibels”)a. If you are told that a signal has attenuated by 20 dB, about how much has it attenuated?b. What would you say about attenuation if you were told that a signal has attenuated by 19 dB? You must approximate.c. What would you
a. For what use scenario was 802.11i PSK initial authentication mode created?3a.) 802.11i PSK initial authentication mode was created for _______a. Corporations with multiple access pointsb. Residences with a single access pointc. Residences with less than eight access pointsd. Corporations with
a. A straight road with government-provided Internet will receive 16 access points that are 10 meters apart. About how many access points would be needed if the city decided to increase the distance to 20 meters? Just give a reasoned estimate.b. A single-story building is 100 meters by
a. What cryptographic protections does 802.11i provide?2a.) 802.11i provides ________.a. Confidentialityb. Message integrityc. Both A and Bd. Neither A nor Bb. How is this protection limited?2b.) In 802.11i, protection is provided between the client and the ________.a. Access pointb. Switchc.
In the Ms. Betsy Davis case at the beginning of the chapter, the access point on the local network did not have security. This makes a man-in-the-middle attack much easier. a. Given what you learned in this chapter, describe how it would be possible to use a man-in-the-middle attack if the
a. Do public hot spots protect your transmissions?a1.) Nearly all public Wi-Fi hot spots encrypt your transmissions.a. Trueb. Falseb. What type of attack did Ms. Davies use?c. How long did it take her to hack the connection, including reading the tutorial?d. How can a drive-by hacker defeat a
a. What is the main promise of 802.11ax over 802.11ac?28a.) What is the main promise of 802.11ax over 802.11ac?a. Higher speedb. The ability to serve more usersc. MIMOd. Mu-MIMOb. Why is the 60 GHz unlicensed band attractive?28b.) The 60 GHz unlicensed service band offers ________ compared to
a. Why does the Wi-Fi Alliance release compatibility testing profiles in waves instead of combining the entire standard’s features initially?27a1.) An 802.11ac Wi-Fi compatibility testing profile contains ________ of the features of the 802.11ac.a. Allb. Nearly allc. Somed. A small
a. You are considering a laptop computer that uses 802.11ay. (802.11ay is discussed in the next subsection.) Will your existing 802.11ac access point be able to communicate with the new device?26a.) If an 802.11n client tries to use an 802.11ac access point, _________.a. They will not be able to
a. What is beam forming?25a.) Beam forming can allow an access point to ________.a. Focus power on individual clientsb. Send signals to two different clients at the same timec. Both A and Bd. Neither A nor Bb. What benefits can it bring?25b.) An access point can transmit to more than one wireless
a. How does MIMO use spatial streams to increase transmission speed?24a.) MIMO _______.a. Bonds two or more channels for higher speedb. Is used in all forms of 802.11c. Uses a single spatial stream but multiple signalsd. Transmits multiple signals in the same channelb. What is the main benefit of
a. You are using an access point with a rated speed of 4 Gbps. Why will you experience much less speed?23a.) Individual throughput for users of an access point _________.a. Depends on how many users are sharing the access pointb. Depends on your distance from the access pointc. Both A and Bd.
a. Compare the rated speeds of 802.11n and 802.11ac.22a.) Among the two most widely used 802.11 transmission standards today is _______.a. 802.11gb. 802.11acc. Both A and Bd. Neither A nor Bb. Compare the market status of 802.11n and 802.11ac.22b.) Today, Wi-Fi sales are dominated by _______.a.
a. If you triple channel bandwidth in a service band, approximately what happens to the number of channels in a service band?21a.) Wider channel bandwidth __________.a. Increases transmission speedb. Allows more channels to be used in a service bandc. Both A and Bd. Neither A nor B
a. Describe RTS/CTS.20a.) In ________, when a wireless host wishes to send, it first sends a message to the wireless access point asking for permission to send. When the access point sends back a response, the host sending the original message may transmit. All other hosts must wait.a.
a. What does CS mean? (Do not just spell out the abbreviation.)19a.) In CS MA/CA, CS means __________.a. Cancel sendingb. Counter-sourcec. Carriage suspensiond. Carrier senseb. How is carrier sensing used in multiple access?19b.) In CSMA/CD + ACK , when a wireless NIC wishes to
a. All wireless hosts and the access point that serves them transmit on the same channel. What problem does this cause?18a.) There is an access point that serves eight wireless hosts. On how many channels will these devices transmit and receive during the course of an hour or two?a. 1b. 2c. 8d. 9b.
a. What is roaming in 802.11?17a1.) A single access point and the set of hosts it serves is called a(n) _______.a. BSSb. BSSIDc. ESSd. None of the above17a2.) In roaming, a wireless client moves from one _______ to another without losing its connection.a. ESSb. BSSc. SSIDd. None of the aboveb. What
a. Why must an access point remove an arriving packet from the frame and place the packet in a different frame when it sends the packet back out?16a.) Access points take __________ from wireless devices and send them on to devices on the wired LAN. They also do the converse.a. Packetsb. Framesc.
a. What spread spectrum transmission method dominates today?15a.) Which of the following uses O F D M ?a. 802.11acb. 802.11nc. Both A and Bd. Neither A nor Bd. Why does it divide the channel into sub carriers?
a. In the 2.4 GHz and 5 GHz service bands, what type of transmission method is required by regulators?14a.) Spread spectrum transmission is used in WLANs because _______.a. It is required by regulatorsb. It offers strong securityc. Both A and Bd. Neither A nor Bb. What is the benefit of
a. In what two unlicensed service bands does 802.11 usually operate?13a.) 802.11 operates in the _______ unlicensed service band.a. 2.4 MHz b. 60 MHz c. Both A and Bd. Neither A nor Bb. How many 20 MHz non-overlapping channels does the 2.4 GHz band support?13b.) The 2.4 GHz
a. In Figure 6-12, there are question marks between several pairs of access points. For each of these pairs, list their channels of operation and whether they will interfere.12a.) Two access points operate on the same channel. They will ______.a. Bondb. Coordinate their use of the channelc.
a. Do WLANs today use licensed or unlicensed service bands?11a1.) WLANs normally use __________.a. Licensed bandsb. Unlicensed bandsc. Both A and Bd. neither A or B11a2.) Many 802.11 standards work in the 5 GHz__________.a. Licensed spectrumb. Unlicensed spectrumc. Licensed service
a. Does a signal travel at a single frequency, or does it spread over a range of frequencies?10a.) Signals in a transmission usually _________.a. Travel at a single frequencyb. Spread over a range of frequenciesc. Spread over the entire frequency distributiond. Spread over the entire service bandb.
a. Distinguish among the frequency spectrum, service bands, and channels.9a1.) The frequency spectrum extends __________.a. Into the gigahertz rangeb. Into the visible light rangec. Into the ultraviolet ranged. To infinity9a2.) In Wi-Fi, 2.4 GHz and 5 GHz refer to __________.a.
a. Contrast inverse square law attenuation and absorptive attenuation.8a.) What propagation problem is especially bad in moist air?a. Absorptive attenuationb. Electromagnetic interferencec. Multi path interferenced. Inverse square law attenuationb. What causes dead zones?8b.) What propagation
a. If you quadruple propagation distance, how much will signal intensity change at the receiver?7a.) At 10 meters, a signal has a strength of 100 mW. About how strong will it be at 40 meters?a. About 0.5 mW b. About 5 mW c. About 25 mW d. About 6 mW b. If you increase
a. Distinguish between omnidirectional and dish antennas in terms of operation.b. Under what circumstances would you use an omnidirectional antenna?6b.) The other wireless device is near but in an unknown direction. It would be better to use _______.a. An omnidirectional antennab. A dish antennac.
a. What is a transceiver?b. Is wireless radio transmission usually described in terms of wavelength or frequency?5b.) Wireless radio transmission speed is usually measured in terms of _______.a. Wavelengthb. Frequencyc. Amplituded. Dollarsc. What is a hertz?5c.) Frequency is measured in terms of
a. In 802.3 Ethernet networks, can simple installation rules usually reduce propagation effects to non-issues?4a.) Compared to wired transmission, propagation problems in radio transmission are ________.a. Worseb. About as badc. Betterb. In 802.11 Wi-Fi networks, can simple installation rules
You have been using your phone and your school’s Wi-Fi network to access hosts on the Internet. Suddenly, you cannot reach Internet hosts. Create a two-column table. a) In the first column, create a list of possible causes. b) In the second column, describe how you would test each one. (You may
a. In a Wi-Fi LAN, do two wireless hosts usually send frames directly to one another? Explain.3a.) In a Wi-Fi LAN, wireless hosts generally send frames directly to one another.a. Trueb. Falseb. Why does the access point connect to the corporate Ethernet LAN?3b.) Wireless access points typically
You can transmit 1.54 Gbps in a channel you use frequently. You want to transmit at 4.32 Gbps. How much wider must your channel be than its current bandwidth?
a. Distinguish between 802.3 standards and 802.11 standards.2a.) Wi-Fi Standards come from the _________ Working Group.a. 802.1b. 802.3c. 802.11d. 802.1Xb.What is the actual difference between 802.11 and Wi-Fi?2b.) Wi-Fi is a term used by the _________.a. IEEEb. Wi-Fi Alliancec. Both A and Bd.
a. What do physical layer standards governb. What do data link layer standards govern?For the following lettered question parts, say whether the concept is a Layer 1 concern or a Layer 2 concern. Explain your reasoning.c. Multi path interference.d. Media Access Control.e. MIMO.f.
a. At what layers do wireless LANs operate?1a.) Wireless network standards operate at ________.a. The data link layerb. The Internet layerc. Both A and Bd. Neither A nor Bb. Do wireless LAN standards governed by OSI or TCP/IP standards? Justify your answer.1b.) Wireless network
Why might a company decided to use 80 MHz channels in 802.11ac instead of 160 MHz channels?
a. Before the attack, where does the ARP cache tell the victim to send a frame carrying a packet to the router?26a.) The ARP cache gives the _______ of a router the host will send a packet to.a. IP addressb. EUI-48 addressc. MAC addressd. Host nameb. Where does it tell the victim to send such
a. What type of attack does 802.1A E protect against?25a.) To prevent an unauthorized user from sending supervisory commands to switches, companies use _____.a. 802.1Xb. SNMPc. VLANsd. 802.1AE
a. What security threat is 802.1X designed to protect against?24a.) To prevent anyone from simply walking up to a corporate switch and plugging their computer into its Ethernet port, companies can use _______.a. 802.1Xb. SNMPc. VLANsd. 802.1A Eb. When 802.1X is being used, what happens if an
a. What is the security benefit of Ethernet VLANs?23a.) Which of the following provides security in Ethernet?a. RSTPb. SNMPc. VLANsd. All of the aboveb. In Figure 5-28, to which hosts can Host D4… send frames?
a. What reliability problem does Ethernet have?22a.) Ethernet has reliability issues because of its _______.a. Too-simple switch operationb. Hierarchical organizationc. Both A and Bd. Neither A nor Bb. How can some redundant backup links be installed without creating loops?22b.) RSTP _______.a. Can
a. What protocol do companies use to manage their Ethernet networks?12a.) To manage their Ethernet networks, companies rely on ______.a. SNMPb. HTTPc. FTTHd. None of the aboveb. What are manageable switches?c. Are all Ethernet switches manageable?21c.) All Ethernet switches are manageable.a. Trueb.
a. What information do the two tag fields give?20a.) The two tag frames provide information about ______.a. Transmission mediab. The length of Jumbo packetsc. Priorityd. All of the aboveb. When is the PAD Field added?20b.) The PAD field is added by the ______ if the frame is too short without
a. Are Ethernet EUI-48 addresses expressed in hex for humans, devices, or both?19a.) EUI-48 addresses in expressed in hexadecimal notation if used by ______.a. Switchesb. Routersc. Both A and Bd. Neither A nor Bb. Which letters may appear in a hex EUI-48 address?19b.) Which of the following letters
a. What is the benefit of having a single possible path through an Ethernet network?18a.) Having only a single possible path between devices ______.a. Reduces switching costsb. Provides reliabilityc. Reduces errorsd. None of the aboveb. Why has Ethernet become the dominant LAN technology?18b.)
a. How are switches in an Ethernet LAN organized?17a.) In Ethernet, switches are organized in a _____.a. Ringb. Meshc. Hierarchyd. Any of the aboveb. Because of this organization, how many possible paths can there be between any two hosts?17b.) In a large Ethernet networks, there can be ______
a. Do switches know the entire data link between the source and destination host?16a.) A switch knows the entire data link between the source and destination hosts.a. Trueb. Falseb. What does a switch know?16b.) The switch knows the type of device it is forwarding a frame to.a. Trueb. False
a. Are the maximum distances for UTP and optical fiber transmission shown in Figure 5-12 and Figure 5-16 distance limits for physical links or data links?15a1.) At what layer is the 100BASE-TX standard?a. Physicalb. Data linkc. Internetd. Physical and data link15a2.) UTP and fiber distance limits
a. Compare relative cost and maximum propagation distance for multimode and single-mode fiber.14a.) Fiber that has a core diameter of 8.3 microns is _______.a. Multimode fiberb. Single-mode fiberc. Full duplex fiberd. Exceptionally fastb. Why does multimode fiber dominate LAN installations?14b.)

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Business Data Networks and Security 11th Edition Raymond R. Panko, Julia L. Panko - Solutions

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