What protocol resolves a computer's IPv4 address to its physical, or Media Access Control (MAC) address?
A. User Datagram Protocol (UDP)
B. Dynamic Host Configuration Protocol (DHCP)
C. Address Resolution Protocol (ARP)
D. Domain Name System (DNS)
Answer: C
Computer Science & Information Technology
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What is the name of the device that is used primarily to secure a network?
A) Switch B) VPN concentrator C) Firewall D) Router
Computer Science & Information Technology
Which of the following are valid identifiers?
i. R3D3 ii. per-capita iii. phone# iv. ice_cream v. 92_aardvarks a. i, ii, iv, v b. i, iv c. i, ii d. ii, iv, v e. All are valid.
Computer Science & Information Technology