ACO 330: Final Exam pt.1 with
Verified Questions and Answers
Correct!!
What is ICANN (Internet Corporation for Assigned Names and Numbers)? –
How an ISP gets a block of addresses
- allocates addresses, manages DNS, assigns domain names
What is NAT (Network Address Translation)? –
All datagrams leaving local network have one IP address
- takes WAN address and translates it to LAN in order to upkeep the one NAT IP
address
What are some of the features of IPv4? - 32 bit source and destination address
- fragmentation
- checksum
What are some of the features of IPv6? - fixed 40 byte header
- no fragmentation
- 128 bit source and destination address
- no checksum
What is the process of open flow data plane abstraction? –
Defined by header fields:
- Pattern: match values in packet header fields
- Actions: drop, forward, modify
- Priority: disambiguate overlapping patterns
- Counters: bytes and packets
What are the match and actions for router, switch, firewall, and NAT open flow
abstraction?
Router: match longest destination IP prefix, action forward out a link
Switch: match destination MAC address, action forward or flood
Firewall: match IP addresses and TCP/UDP port numbers, action permit or deny
NAT: match IP and port, action rewrite address and port
What are the two network layer functions? –
1. Forwarding (data plane): move packets to output
2. Routing (control plane): determine packet route
What are the two approaches to structuring network control plane? –
Verified Questions and Answers
Correct!!
What is ICANN (Internet Corporation for Assigned Names and Numbers)? –
How an ISP gets a block of addresses
- allocates addresses, manages DNS, assigns domain names
What is NAT (Network Address Translation)? –
All datagrams leaving local network have one IP address
- takes WAN address and translates it to LAN in order to upkeep the one NAT IP
address
What are some of the features of IPv4? - 32 bit source and destination address
- fragmentation
- checksum
What are some of the features of IPv6? - fixed 40 byte header
- no fragmentation
- 128 bit source and destination address
- no checksum
What is the process of open flow data plane abstraction? –
Defined by header fields:
- Pattern: match values in packet header fields
- Actions: drop, forward, modify
- Priority: disambiguate overlapping patterns
- Counters: bytes and packets
What are the match and actions for router, switch, firewall, and NAT open flow
abstraction?
Router: match longest destination IP prefix, action forward out a link
Switch: match destination MAC address, action forward or flood
Firewall: match IP addresses and TCP/UDP port numbers, action permit or deny
NAT: match IP and port, action rewrite address and port
What are the two network layer functions? –
1. Forwarding (data plane): move packets to output
2. Routing (control plane): determine packet route
What are the two approaches to structuring network control plane? –
