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Guide, 4th edition by Anthony J. Sequeira
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N10-008Network+Instructor’s TestBank(Chapters 1-25)
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Chapter 1 OSI Model 4 4 4
1. At which OSI layer can a source MAC address be found in the Ethernet header?
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a. Network layer 4
b. Transportlayer 4
c. Physicallayer 4
d. Data link layer 4 4
1 Answer D 4
2. Which of the followingstatementsis true? (Choose two.)
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a. Client/server networks can easily scale, which might require the purchase of additional 4 4 4 4 4 4 4 4 4 4 4
clientlicenses.
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b. Client/server networks can cost more than peer-to-peer networks. For example, 4 4 4 4 4 4 4 4 4
client/server networks might require the purchase of dedicated server hardware and a network
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OS with anappropriate number of licenses.
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c. Peer-to-peer networks canbe very difficultto install. 4 4 4 4 4 4 4
d. Peer-to-peer networks typically cost more than client/server networks because there is 4 4 4 4 4 4 4 4 4 4
norequirement for dedicatedserver resources or advanced NOS software.
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2 Answer: A, B 4 4
3. The option of sending agroup of segments at one time, instead of just onesegment at atime, is
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provided at what layer of the OSI reference model?
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a. Data link layer – using link aggregation4 4 4 4 4 4
b. Network layer- using multiprotocolrouting 4 4 4 4
c. Transportlayer- using Windowing 4 4 4
d. Physicallayer- using interface bonding 4 4 4 4
C. The key wordwas segments, a datagram term found at the Transport layer
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,4. The source IP address can be found in the header ofa packet at this layer of the
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OSIreference model
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a. Network layer 4
b. Session layer
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c. Data link layer
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d. Transportlayer 4
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, 4 Answer A
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5. Which of thefollowingis aconnectionlessnetworklayer protocol?
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a. IP
b. TCP
c. UDP
d. SFTP
5. c. UDP and TCP are Transport Layer. IP is Networklayer andcan only be made connectionoriented
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ifcoupled with TCP.
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6. What transmissiontechnology requires asegment to beresentif acollision with
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anothersegment ocurrs?
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a. CSMA/CA
b. MTU
c. SSH
d. CSMA/CD
6. D.CSMA/CA avoids collisions, CSMA/CD detects andcompensates by resending damaged segments.
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7) What is theprotocol of the addressused by a router (at Layer 3)to identify
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specificdevices?
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a. MAC
b. IP
c. LLC
d. ARP 4
7Answer: B
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Explanation: The Internet Protocol (IP) address is used by routers (at Layer 3) to identify specific devices on a
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network. This type of address, as opposed to a MAC address, is used across routed devices (routers)(that is, the
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IP address typically does not change when traffic flows through a router).
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8) Which IEEE standard defines wired Ethernet as it isused on modern networks?
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a. 802.5 4
b. 802.16 4
c. 802.3
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