Introduction to Network Part III

Chapter 5 Application Layer/Other Protocols (Part 2)

01 What is email	02 SMTP header information
03 How email works and how to read email headers	04 What are POP3 and IMAP4?
05 What is MIME? E-mail encryption and electronic signature	06 Common Key Cryptosystem
07 Public Key Cryptosystem	08 E-mail (S/MIME and PGP) and mail relay problems
09 E-mail (restricted by domain, linked with blacklist)	10 POP before SMTP/APOP before SMTP
11 POPS before SMTPS, SMTP-AUTH, SMTPS-AUTH	12 What is SNMP? Manager/Agent
13 SNMP (MIB, Polling/Trap, Message)	14 multicast addresses
15 How DHCP Works	16 DHCP relay agent
17 UDP broadcast relay for DHCP	18 BOOTP/DHCP message format
19 Contents of DHCP message	20 Packet flow in DHCP
21 FTP/TFTP communication	22 FTP communication (active mode/passive mode)

Chapter 6 VLSM, Firewall, QoS, VRRP

23 What is a Variable Length Subnet Mask (VLSM)	24 How to divide subnets in VLSM
25 VLSM and classful routing	26 VLSM and Route Aggregation
27 Firewall types	28 What is Static Filtering
29 Limitation of TCP header specification for static filtering	30 What is Dynamic Filtering
31 Difference Between Static and Dynamic Filtering	32 Information required for stateful inspection filtering
33 Port numbers that should be blocked by filtering	34 URL Filtering/P2P Filtering
35 QoS	36 Mechanism of QoS and priority control
37 QoS/priority control mechanism/PQ+WFQ	38 QoS/bandwidth control
39 QoS/Packet Identification	40 What is VRRP?