Computer Networking > QUESTIONS & ANSWERS > The Bits and Bytes of Computer Networking. Week 4: Network Services (All)
The Bits and Bytes of Computer Networking. Week 4: Network Services
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The Bits and Bytes of Computer Networking. Week 4: Network Services _ Answered 2023 What transport layer protocol does DNS normally use? ✔✔ UDP; While DNS over TCP does exist, UDP is the most ... common protocol. A DNS TTL determines what? ✔✔ How long a DNS entry is allowed to be cached; TTL stands for Time to Live and determines how long a DNS entry can be cached How many root servers are there? ✔✔ 13; There are 13 root servers. An A Record contains what? ✔✔ IPv4 address; An A record contains an IPv4 address Select all that are true. ✔✔ One domain name can point to one IP; This is a valid DNS setup One domain name can point to many IPs; this is a valid DNS setup. Many domain names can point to the same IP; This is a valid DNS setup. MX stands for ________. ✔✔ Mail exchange; An MX record stores a mail server's IP. A fully qualified domain name can contain how many characters? ✔✔ 255; An FQDN is limited to a total length of 255 characters. What are the four things that all computers need configured in order to operate on a modern network? Check all that apply. ✔✔ An IP address; All computers need these four things configured in order to operate on a modern computer network. a name server; Computers need a name server in order to operate on a network. a subnet mask; All computers need these four things configured in order to operate on a modern computer network. a default gateway; All computers need these four things configured in order to operate on a modern computer network. When using Fixed Allocation DHCP, what's used to determine a computer's IP? ✔✔ a MAC address; Fixed Allocation DHCP ensures that computers receive an IP address reserved for it via its MAC address. [Show More]
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