Udemy Course Bronze Flashcards
What is bare-metal server?
a physical server without an OS
What is a hypervisor?
a host or virtual server installed on a physical server
What is a virtual machine?
A guest or instance that runs on the installed hypervisor
What is a virtual desktop?
A desktop that you can access from any laptop
What is P2V?
physical to virtual
What is V2V?
virtual to virtual
What is VM template?
a template that other VM machines can use to instantiate
What is the difference between cloud and virtualization?
the cloud is a remote location that utilizes virtualization to bring services to customers
What is VMware?
the leader in virtualization technolog
What does LAN stand for?
Local area network
What is a MAC address?
Media Access Control Address is a unique layer 2 address given to every network interface on an Ethernet network
What is a NIC?
Network Interface Card
Which command can be used to show the MAC address and other pertinent network information for Mac and Linux computers?
ifconfig
True or False: A switch is a broadcast domain
True
What is a unicast?
a one to one communication
Do hubs has MAC tables?
No
What is a layer 2 segment?
a broadcast domain
Does an IP address interact with a NIC?
No
Are IP addresses unique within a network?
Yes
What is an ARP request?
A broadcast to discover the MAC associated with an IP address
What do BUM traffic have in common?
It is sent out to multiple computers
What layer is an IP address?
Layer 3
What is an unknown unicast?
When a switch is unsure of what the destination MAC is for a unicast, it sends out a broadcast to find out
What makes up BUM traffic?
broadcast, unknown unicast, multicast
What is a multicast?
When a single source sends a multicast in order to reach a group of specified recipients
True or False: An ARP request is an attempt to learn the MAC table of the switch
False, not learning the switch, learning the IP address
What is a layer 2 bridge?
A thing with MAC addresses that connects two hubs that helps reduce collisions
What is a router?
A device that splits up switches to create different broadcast domains
True or False: A hub is a collision domain
True
What is a switch?
A thing that takes in all communications between computers and directs them to their desires destinations. This prevents collisions domains
Does each router interface have a unique IP address?
Yes
What is 10.1.1.0 /24 is an example of?
network address
What is the highest possible address in a network range?
broadcast address
What is a VLAN?
A virtual local area network
True or False: Each VLAN is a broadcast domain and has its own MAC Table?
true
What is WAN?
A wide area network connects local area networks that are geographically far apart
What is an edge router?
A router that sets at the edge of a network to connect it to the internet or a WAN
What is an IPSEC VPN?
A device that securely connects one network to another through the internet
True or False: A layer 2 vpn is unable to have systems with the same IP address scheme at both sides of a VPN
False
What is DHCP?
Dynamic Host Control Protocol is a way to automatically assign IP addresses to computers
When a machine requests a dynamic IP by issuing a DHCP what is the result?
A layer 2 ethernet broadcast is sent
What is DNS?
Domain Name System is a human friendly way to read IP addresses
What is a NAT?
A network address translation subsitutes a private IP for an internet routable public IP
