TheoryCCST Cisco IT Exam Prep Practice Test Video
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Q1What is the primary difference between TCP and UDP?
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✓ Correct answer: TCP is connection-oriented while UDP is connectionless
TCP (Transmission Control Protocol) is connection-oriented, providing reliable, ordered, and error-checked delivery of data packets. UDP (User Datagram Protocol) is connectionless and does not guarantee delivery, order, or error checking, making it faster but less reliable.
Q2Which protocol would be most appropriate for time-sensitive applications like video streaming or online gaming?
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✓ Correct answer: UDP
UDP is preferred for time-sensitive applications because it has lower latency due to no handshaking, acknowledgments, or retransmissions. While some packets might be lost, this is generally preferable to the delays that TCP's reliability mechanisms would introduce.
Q3What is the default port number for HTTPS?
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✓ Correct answer: 443
HTTPS (HTTP Secure) uses port 443 by default. This is the secure version of HTTP that encrypts the data being transmitted using SSL/TLS.
Q4Which protocol is used to automatically assign IP addresses to devices on a network?
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✓ Correct answer: DHCP
DHCP (Dynamic Host Configuration Protocol) automatically assigns IP addresses and other network configuration parameters to devices when they join a network, eliminating the need for manual IP configuration.
Q5What is the primary purpose of DNS?
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✓ Correct answer: To translate domain names to IP addresses
DNS (Domain Name System) translates human-readable domain names (like www.example.com) into IP addresses that computers use to identify each other on the network.
Q6Which protocol would you use to securely transfer files while maintaining SSH authentication and encryption?
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✓ Correct answer: SFTP
SFTP (SSH File Transfer Protocol) provides secure file transfer capabilities using SSH encryption and authentication, protecting both credentials and data during transfer.
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