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| Section | Objectives |
|---|---|
| Topic 1: Secure Optimized WAN Overview | - Enterprise secure WAN fundamental concepts - WAN architecture and requirements |
| Topic 2: Conventional VPN Technologies | - GRE VPN principles and configuration - L2TP VPN concepts and applications |
| Topic 3: Enhanced Network Security | - Network security management methods - Threats and secure network best practices |
| Topic 4: Quality of Service (QoS) | - Link efficiency and compression technologies - Traffic policing, shaping and congestion techniques |
| Topic 5: Secure VPN Technologies | - IPSec VPN architecture and security basics - SSL VPN principles and configuration basics |
| Topic 6: Broadband Access Technologies | - WAN access configuration methods - Broadband access principles (IPoE, EPON etc.) |
| Topic 7: BGP/MPLS VPN | - MPLS core concepts and label forwarding - BGP/MPLS VPN implementation and troubleshooting |
1. Which of the following descriptions about GRE are correct ? ( Choose one or more )
A) bearing carrier IP header to UDP port number 47 identifies the GRE header
B) GRE uses the Ethernet protocol type Ox0800 to identify the payload packet as IP
C) adopted using IP over IP of GRE encapsulation, public network and the private network interface address may coincide
D) GRE VPN can transmit multicast data
2. The correct statement about malformed message defense is ______ .
A) abnormal shaped TCP packet attack by TCP attacks flag is set to a specific value of the packets
B) Teardrop attacks use the loopholes of overlapping movement during UDP packet reassembly to attack
C) To defend against malformed message attacks, it is necessary to conduct targeted defense against the characteristics of each attack
D) The ping of death attack uses oversized packets to attack
3. Among the following fiber access methods, the highest degree of fiberization is
A) FTTA
B) FTTB
C) FTTC
D) FTTH
4. The encapsulation format of the voice data transmitted in the VoIP network data is ______ .
A) IP|UDP|RTCP|RTP| Voice data
B) IP|TCP |RTP| voice data
C) IP|UDP|RTP| Voice data
D) IP| Voice Data
5. When the link type of the ONU port is Trunk , its processing method for upstream packets is _____ .
A) only allowed without Tag packets to pass through, and the packets add the default VLAN of Tag
B) Only allow tagged messages to pass
C) Only allow the packets with the default LAN Tag to pass and go to the tag
D) for without receipt of the Tag message, add the default VLAN Tag ; for received with Tag packets forwarded directly
Solutions:
| Question # 1 Answer: B,D | Question # 2 Answer: A,B,C,D | Question # 3 Answer: D | Question # 4 Answer: C | Question # 5 Answer: D |
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