QUESTIONS AND SOLUTIONS GRADED A+
◉ Wide Area Network (WAN). Answer: Connects the network across a
wider geographical area. Is reached through a router (gateway)
◉ What kind of notation do IP Addresses use. Answer: Dotted-Quad or
Dot Decimal Notation
◉ Subnet. Answer: A group of local IP addresses
◉ Subnet Mask. Answer: Helps determine what IP addresses are in our
subnet
Should be an unbroken string of binary ones followed by zeros
A subnet mask of 255.255.255.0 can be abbreviated as "/24"
◉ What is the range of numbers for IP addresses in dotted-quad form.
Answer: 0-255
,◉ What is the range of numbers we can actually use when assigning IP
addresses in dotted-quad form. Answer: 1-254
◉ Domain Name Service (DNS). Answer: Translates domain names into
IP addresses
If multiples are on a list, the first one to return an answer is followed
◉ Subnets reserved for use on a local network. Answer: 192 . 168 . ___ .
___
10 . ___ . ___ . ___
172 . 16-31 . ___ . ___
169 . 254 . ___ . ___
◉ What are the two primary DHCP settings. Answer: IP Range (a.k.a.
DHCP pool) and Lease Time (e.g. 24 hours)
◉ What is the priority option for automatic IP addressing for Dante
devices. Answer: DHCP Server
◉ If no DHCP server is found for automatic IP addressing, what is the
back up plan. Answer: Link Local
,◉ How does Link Local work. Answer: Assigns each device a random
address in 169 . 254 . ___ . ___
Sends an ARP request to ensure that an address is available
Once Link Local address is set, we continue looking for DHCP Service
◉ VLAN. Answer: Strategically isolates LANs on the same switch
◉ Non-Blocking Architecture. Answer: The switch is not the bandwidth
bottleneck in the network
Your only restriction is your individual port speed
◉ Spanning Tree Protocol (STP). Answer: A protocol that disables a
second trunk line between the same two switches to prevent a Broadcast
Storm
◉ Broadcast Storm. Answer: An endless loop of broadcast information.
Like microphone feedback but for broadcast
◉ Link Aggregation Group (LAG). Answer: Allows trunk lines to be
combined for more bandwidth
, ◉ How can trunk lines contact multiple VLANs. Answer: By "tagging"
packets
It its best practice to have one untagged VLAN, the rest being tagged
◉ TCP. Answer: Like "signature required" mail, the sender gets a
notification that the message was received
Appropriate when communications are likely to be interrupted, when
missing a packet would invalidate the date, or when timely delivery is a
convenience rather than a necessity
◉ UDP. Answer: Like "first class" mail, a message is put on the network
and assumed to be delivered successfully - no notification
Appropriate when communications are not likely to be interrupted
(LAN), when a missing packet in sequences can be overcome (error
correction), or when timely delivery and/or low overhead is a priority
UDP is ideal for real-time networks
◉ Potential problems with TCP. Answer: Creates additional overhead
from confirmation messages, increasing the likelihood of problems (not
ideal for live Dante systems)