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CISA · Exam domain
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1. Which RAID level does not improve fault tolerance?
Explanation
RAID 0 improves performance but does not provide redundancy or fault tolerance.
2. Which type of network device directs packets through the Internet?
Explanation
Routers direct IP packets using routing tables, forwarding them step by step across the Internet.
3. This type of data transmission is often used to transmit video signals across the network.
Explanation
Multicasting transmits packets to multiple systems simultaneously, commonly used for video.
4. This address is manufactured or burned into network equipment and is totally unique.
Explanation
The 48-bit MAC address is unique and assigned to network hardware at manufacture.
5. This network is often used to provide vendors and customers limited access to corporate network services.
Explanation
An extranet gives vendors or customers restricted access to corporate network services.
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