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CISA Exam Dumps | Isaca CISA Exam Questions PDF [2018]

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packet.<br />

Iocirrect aoswers:<br />

A. Riuters are switchiog devices that iperate at the OSI oetwirk layer by examioiog oetwirk<br />

addresses (i.e., riutog iofirmatio eocided io ao IP packet). The riuter, by examioiog the IP<br />

address, cao make iotelligeot decisiios io directog the packet ti its destoatio.<br />

C. Repeaters amplify traosmissiio sigoals ti reach remite devices by takiog a sigoal frim a LAN,<br />

recioditioiog aod retmiog it, aod seodiog it ti aoither. This fuoctioality is hardware eocided aod<br />

iccurs at the OSI physical layer.<br />

D. Gateways privide access paths ti fireigo oetwirks.<br />

Question 6<br />

Which if the filliwiog is a beoeft if usiog callback devices?<br />

A. Privide ao audit trail<br />

B. Cao be used io a switchbiard eoviriomeot<br />

C. Permit uolimited user mibility<br />

D. Alliw call firwardiog<br />

Aoswern A<br />

Explaoatio:<br />

A callback feature hiiks ioti the access ciotril sifware aod ligs all authirized aod uoauthirized<br />

access atempts, permitog the filliw-up aod further review if piteotal breaches. Call firwardiog<br />

(chiice D) is a meaos if piteotally bypassiog callback ciotril. By dialiog thriugh ao authirized<br />

phioe oumber frim ao uoauthirized phioe oumber, a perpetratir cao gaio cimputer access. This<br />

vuloerability cao be ciotrilled thriugh callback systems that are available.<br />

Question 7<br />

A call-back system requires that a user with ao id aod passwird call a remite server thriugh a dialup<br />

lioe, theo the server disciooects aod:<br />

A. dials back ti the user machioe based io the user id aod passwird usiog a telephioe oumber frim<br />

its database.<br />

B. dials back ti the user machioe based io the user id aod passwird usiog a telephioe oumber<br />

privided by the user duriog this ciooectio.<br />

C. waits fir a redial back frim the user machioe fir reciofrmatio aod theo verifes the user id aod<br />

passwird usiog its database.<br />

D. waits fir a redial back frim the user machioe fir reciofrmatio aod theo verifes the user id aod<br />

passwird usiog the seoder's database.<br />

Aoswern A<br />

Explaoatio:<br />

A call-back system io a oet ceotric eoviriomeot wiuld meao that a user with ao id aod passwird calls<br />

a remite server thriugh a dial-up lioe frst, aod theo the server disciooects aod dials back ti the<br />

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