Computer Networking > QUESTIONS & ANSWERS > The Bits and Bytes of Computer Networking Week 4 Already Passed (All)

The Bits and Bytes of Computer Networking Week 4 Already Passed

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The Bits and Bytes of Computer Networking Week 4 Already Passed What transport layer protocol does DNS normally use? UDP IP TCP ICMP ✔✔Great job! While DNS over TCP does exist, UDP is the mo... st common protocol. A DNS TTL determines what? ✔✔TTL stands for Time to Live and determines how long a DNS entry can be cached. How many root servers are there? ✔✔13 root servers. An A Record contains what? ✔✔IPv4 address Select all that are true ✔✔One domain name can point to one IP. One domain name can point to many IPs. Many domain names can point to the same IP. MX stands for ________. ✔✔Mail exchange A fully qualified domain name can contain how many characters? ✔✔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? ✔✔A default gateway An IP address A name server A subnet mask When using Fixed Allocation DHCP, what's used to determine a computer's IP? ✔✔MAC address The process by which a client configured to use DHCP attempts to get network configuration information is known as _________________. ✔✔DHCP Discovery NAT addresses concerns over the dwindling IPv4 address space by ___________________. ✔✔NAT allows networks to use non-routable address space for their internal devices. What technique allows for inbound traffic through a NAT? ✔✔Port forwarding The total number of IPv4 addresses is approximately: ✔✔4.2 billion Two-factor authentication is_________________________. ✔✔Two-factor authentication requires a username/password and something extra. VPNs are known as a _____ protocol. ✔✔VPNs are tunneling protocols. A proxy is something that _______________________. ✔✔communicate on behalf of something else. [Show More]

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