MIS 410 CH 5
A) on a customer premises
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
A) 802.1
10) Which working group is likely to develop security standards to be used by multiple LAN/WAN technologies? A) 802.1 B) 802.e C) 802.3 D) 802.11
A) physical
11) Ethernet standards are specified at the ________ layer. A) physical B) internet C) both A and B D) neither A nor B
C) both A and B
12) Ethernet standards are specified at the ________ layer. A) physical B) data link C) both A and B D) neither A nor B
D) neither A nor B
13) Ethernet standards are specified at the ________ layer. A) Internet B) transport C) both A and B D) neither A nor B
B) MAC
14) Ethernet has only a single standard at the ________ layer. A) physical B) MAC C) data link D) Internet
B) signaling
15) Physical layer standards govern ________. A) frame structure B) signaling C) both A and B D) neither A nor B
B) two
16) In binary signaling there is (are) ________ state(s). A) one B) two C) a number of D) an infinite number of
C) a small number of
17) In digital signaling there is (are) ________ state(s). A) one B) two C) a small number of D) an infinite number of
B) binary signaling
18) Which of the following is relatively immune to small errors? A) analog signaling B) binary signaling C) both A and B D) neither A nor B
A) digital
19) What form of transmission is most resistant to transmission errors? A) digital B) analog C) Both are about equally resistant to transmission errors. D) none of the above
D) workgroup switches
2) What type of switch connects users to the network? A) user switches B) core switches C) access switches D) workgroup switches
B) 4-pair UTP
20) 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
D) 8
21) How many wires are there is a UTP Ethernet cord? A) 1 B) 2 C) 4 D) 8
B) RJ-45
22) 4-pair UTP terminates in a(n) ________ connector. A) USB B) RJ-45 C) SC D) standard telephone
D) none of the above
23) Four-pair UTP uses ________ connectors. A) universal B) binary C) ST or SC D) none of the above
B) speed
24) The main benefit of parallel transmission over serial transmission is ________. A) reliability B) speed C) both A and B D) neither A nor B
A) quality
25) UTP categories rate the ________ of UTP cabling. A) quality B) speed C) quality-of-service performance D) error performance
C) 1 Gbps
26) 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
C) both A and B
27) 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
B) category 6A
28) 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
C) terminal crosstalk interference
29) Untwisting wire pairs no more than 1.25 cm (a half inch) at their ends reduces ________. A) interference B) crosstalk interference C) terminal crosstalk interference D) none of the above
B) core switches
3) What type of switch connects switches to other switches? A) trunk switches B) core switches C) workgroup switches D) none of the above
A) core
30) In optical fiber, light travels through the ________. A) core B) cladding C) both A and B
C) modal dispersion
31) When the light energies of two pulses arrive at overlapping times, this is ________. A) multimode transmission B) modal bandwidth C) modal dispersion D) modal interference
A) multimode fiber
32) Modal dispersion limits transmission distance in ________. A) multimode fiber B) single-mode fiber C) both A and B D) neither A nor B
B) single-mode fiber
33) Fiber that has a core diameter of 8 microns is ________. A) multimode fiber B) single-mode fiber C) full duplex fiber D) exceptionally fast
C) single-mode fiber
34) The longest transmission distances are possible with ________. A) USB B) UTP C) single-mode fiber D) multimode fiber
D) multimode fiber
35) Which of the following is used most heavily in LANs for fiber transmission links? A) modal bandwidth fiber B) 1.550 nm fiber C) single-mode fiber D) multimode fiber
D) for full-duplex transmission
36) 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
B) full-duplex communication
37) 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
B) wavelength
38) The distance between two corresponding points in adjacent cycles is the ________. A) frequency B) wavelength C) bandwidth D) span
A) 850 nm
39) Which light wavelength dominates in LANs? A) 850 nm B) 1,310 nm C) 1,550 nm D) 1 Gbps
B) UTP, access lines
4) In LANs, ________ typically is for ________. A) optical fiber, access lines B) UTP, access lines C) UTP, trunk lines D) none of the above
B) OM4
40) ________ fiber is being sold today. A) OM2 B) OM4 C) both A and B D) neither A nor B
C) both A and B
41) Link aggregation can increase trunk speed by a factor of ________. A) two B) three C) both A and B D) neither A nor B
A) physical links
42) Ethernet usually has a 100 meter distance limit for ________. A) physical links B) data links C) routes D) both A and B
A) physical
43) At what layer is the 100BASE-TX standard? A) physical B) data link C) Internet D) physical and data link
A) MAC
44) Ethernet addresses were formerly called ________ addresses. A) MAC B) EUI-48 C) both A and B D) neither A nor B
B) EUI-48
45) The official name for Ethernet addresses is the ________ addresses. A) MAC B) EUI-48 C) both A and B D) neither A nor B
C) both A and B
46) The Ethernet data field contains ________. A) a packet B) the LLC subheader C) both A and B D) neither A nor B
D) designate the type of packet in the data field
47) The purpose of LLC subheader is to ________. A) permit error detection B) divide the data field from the trailer C) divide the header from the data field D) designate the type of packet in the data field
C) data field
48) The Ethernet length field gives the length of the ________. A) frame B) frame, less the frame check field's size C) data field D) data field plus PAD
A) drops the frame
49) If an Ethernet receiver detects an error in an arriving frame, it ________. A) drops the frame B) sends an ACK to the sender C) sends a NACK to the receiver D) sends the sender a retransmission request frame
A) trunk lines
5) In LANs, optical fiber typically is used in ________. A) trunk lines B) access lines C) workgroup switches D) core switches
D) tag
50) Using priority in Ethernet requires the use of ________ fields. A) QoS B) flag C) extension D) tag
B) a single port number for each EUI-48 address
51) An Ethernet switch knows ________. A) an IP address for each EUI-48 address B) a single port number for each EUI-48 address C) multiple port numbers for each EUI-48 address D) the entire path from the source host to the destination host
B) hierarchical
52) Switches in an Ethernet LAN are organized in a ________ topology. A) mesh B) hierarchical C) point-to-point D) bus
B) hierarchical
53) In a ________ topology, there is only one possible path between any two hosts. A) mesh B) hierarchical C) both A and B D) neither A nor B
A) its hierarchical topology
54) Ethernet is inexpensive thanks to ________. A) its hierarchical topology B) its use of multiple switches C) its use of regeneration D) its use of the Rapid Spanning Tree Protocol
C) low cost, compared with competing technologies
55) Ethernet becomes the dominant of LAN technology primarily because of its ________. A) high speed, compared with competing technologies B) use of multiple switches C) low cost, compared with competing technologies D) sophistication, compared with competing technologies
D) neither A nor B
56) Ethernet's hierarchical topology makes it ________. A) expensive B) reliable C) both A and B D) neither A nor B
B) lower cost per frame handled
57) Ethernet's hierarchical topology tends to create ________. A) greater reliability B) lower cost per frame handled C) both A and B D) none of the above
D) using the Rapid Spanning Tree Protocol
58) Which of the following can increase reliability considerably in an Ethernet LAN? A) using a hierarchical topology B) using a mesh topology C) using a bus topology D) using the Rapid Spanning Tree Protocol
C) difficult and time consuming
59) Creating effective backup links in RSTP is ________. A) completely automatic B) simple and largely automatic C) difficult and time consuming D) impossible
D) greater distance span
6) Optical fiber's main advantage over UTP is ________. A) lower cost B) lower fragility C) higher speed D) greater distance span
C) up to 8
60) Ethernet can offer ________ priority levels. A) up to 2 B) up to 4 C) up to 8 D) Ethernet cannot offer priority levels.
C) reduce hardware costs
61) Managed Ethernet switches ________. A) are not standardized B) are managed by an outsourcing company C) reduce hardware costs D) reduce labor costs
B) reconfigure remote switches
62) Strong security is needed to ________. A) collect information from remote switches B) reconfigure remote switches C) have a MIB D) reduce total costs
B) 25 watts
63) What is the maximum power for POE Plus in the standard? A) 15 watts B) 25 watts C) 75 watts D) 150 watts
C) both A and B
64) Under the standard, Ethernet switches can provide enough power over UTP for ________. A) wireless access points B) voice over IP telephones C) both A and B D) neither A nor B
A) wireless access points
65) Under the standard, Ethernet switches can provide enough power over UTP for ________. A) wireless access points B) desktop computers C) both A and B D) neither A nor B
D) 802.1X
66) The ________ standard was created to prevent attackers from walking in and simply plugging a computer into a wall jack and therefore accessing the network. A) Ethernet firewall B) 802.1AE C) 802.3X D) 802.1X
B) authenticator
67) In 802.1X, the workgroup switch is the ________. A) authentication server B) authenticator C) both A and B D) neither A nor B
C) both A and B
68) Which of the following is a benefit of using a central authentication server? A) consistency in authentication B) faster changes when authentication information needs to be changed C) both A and B D) neither A nor B
A) reads traffic traveling between one host to another
69) A man in the middle attack ________. A) reads traffic traveling between one host to another B) creates a denial service attack on both parties C) creates a denial of service attack against the client D) none of the above
A) IEEE
7) What organization creates Ethernet standards? (Give the most specific answer.) A) IEEE B) IETF C) ISO D) OSI
C) 802.1AE
70) ARP cache poisoning can be defeated using ________. A) 802.1X B) 802.3 Lock C) 802.1AE D) 802.2
C) 802.3
8) What 802 Working Group creates Ethernet standards? A) 802.1 B) 802.2 C) 802.3 D) 802.11
A.) True
9) In this book, we use the terms Ethernet and 802.3 interchangeably. A.) True B.)False
