Section 1. OSI

F5 - Application Delivery Fundamentals Topics

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Objective 1.02: Explain protocols and technologies specific to the data link layer.

-  Explain the purpose and functionality of ARP
-  Explain the purpose and functionality of VLANs
-  Explain the purpose and functionality of link aggregation

Objective 1.03: Explain protocols and apply technologies specific to the Network layer.

- Explain the purpose and functionality of IP addressing and subnetting
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- Given an IP address and net mask, determine the network IP and the broadcast IP
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- Given a routing table and a destination IP address, identify which routing table entry the destination   IP address will match
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- Explain the purpose and functionality of Routing protocols
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-  Explain the purpose of fragmentation
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- Given a fragment, identify what information is needed for reassembly

- Explain the purpose of TTL functionality

-  Given a packet traversing a topology, document the source/destination IP address/MAC address changes at each hop.

Objective 1.04: Explain the features and functionality of protocols and technologies specific to the Transport layer.

- Compare/Contrast purpose and functionality of MTU and MSS
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- Explain the purpose and functionality of TCP
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                         - TCP connection in LTM 

- Explain the purpose and functionality of UDP

- Explain the purpose and functionality of ports in general
              System ports = Well-known ports (0-1023)
                User ports     = Registered ports (1024-49151)
                Dynamic/ Private ports (49152-65535)
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 - Explain how retransmissions occur
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- Explain the purpose and process of a reset
 
- Describe various TCP options

- Describe a TCP checksum error
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-  Describe how TCP addresses error correction
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- Describe how the flow control process occurs
               Tip: Flow Control  
                   The receiving TCP, when sending an ACK back to the sender, also indicates to the sender the number of bytes it can receive beyond the last received TCP segment, without causing overrun and overflow in its internal buffers. This is sent in the ACK in the form of the highest sequence number it can receive without problems.


Objective 1.05: Explain the features and functionality of protocols and technologies specific to the Application layer.


- Explain the purpose and functionality of HTTP

- Differentiate between HTTP versions
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- Interpret HTTP status codes 
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-  Determine an HTTP request method for a given use case
                      
-  Explain the purpose and functionality of HTTP keepalives

- Explain the purpose and functionality of HTTP headers
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- Explain the purpose and functionality of DNS
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-  Explain the purpose and functionality of SIP

- Explain the purpose and functionality of FTP
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- Differentiate between passive and active FTP 
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- Explain the purpose and functionality of SMTP
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-   Explain the purpose and functionality of a cookie
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- Given a situation in which a client connects to a remote host, explain how the name resolution process occurs

- Explain the purpose and functionality of a URL
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