Networking Unit 1 Exam Part

65. ______ is when IP addresses and domain names are saved from previous visits for quicker DNS queries.

• DNS Cache
• DNS query
• DNS server
• DNS log

66. Which of the following is a top-level domain?

• .com
• .edu
• .org
• All of the options provided

67. What is the purpose of NTP?

• Assign IP addresses to devices that connect to a network
• Translates IP addresses to domain names
• Make sure all the clocks on the same network are synchronized
• None of the options provided

68. Which of the following is NOT a stratum level?

• 0
• 1
• 3
• 5

69. What is a stratum?

• The level of accuracy of the clocks between systems
• The number of IP addresses available during assignment
• The delay between translation from IP address to domain name
• The number of hops taken from host to receiver

70. A(n) ______ is any device on a network that gets the current timestamp from an NTP server.

• admin
• client
• monitor
• swatch

71. Which of the following layer is NOT one of the tiers in a three-tiered network architecture?

• Core
• Transfer
• Distribution
• Access

72. With an East-West data flow, traffic moves in and out of the network.

• true
• false

72. What is a SAN?

• A series of hot-swap racks with HDDs
• A network solution for transfering between a physical environment to cloud computing
• Shorthand Architecture and Networking protocol
• A high-speed, specialized network that provides users with access to a large storage space

73. What is another name for software as a service?

• Mobile backend as a service
• Subscribeware
• Platform-based service
• Hardware as a service