QUESTION 1 You are a technician at Cisco Sources. Your newly appointed Cisco Sources trainee wants you to describe the concept 'NetFlow traffic flow' to her. What would your reply be?

A. It is a sequence of packets between a particular source and destination.

B. It is a uni-directional sequence of packets between a particular source and destination.

C. It is a bi-directional sequence of packets between a particular source and destination.

D. It is a multi-directional sequence of packets between a particular source and destination. Answer: A Explanation: A NetFlow export-enabled device is one that has been configured to operate with Cisco IOS NetFlow Services software (see Appendix A) in a way that enables the device to export information about traffic flows between communicating end nodes in a network. For NetFlow data export, traffic flows in a network have the following attributes in common:

• Source and destination autonomous system (AS) numbers
• Source and destination IP addresses
• Source and destination application port numbers
• Input interfaces
• IP type of services (ToS)
• IP protocol Reference: http://www.cisco.com/en/US/products/sw/netmgtsw/ps1974/products_installation_guide_
  chapter09186a008008 0774.html

QUESTION 2 You are a technician at Cisco Sources. You inform your newly appointed Cisco Sources trainee that Cisco's Architecture for Voice, Video and Integrated Data (AVVID) addresses a number of concerns when it comes to network deployment. Your trainee now wants to know what represents intelligent network services in Cisco's AVVID? What would your reply be? (Choose all that apply.)

A. Quality of Service (QoS)

B. Intelligent platforms

C. Mobility and scalability

D. Security

E. High availability Answer: A, C, D, E Explanation: By creating a robust foundation of basic connectivity and protocol implementation, Cisco AVVID Network Infrastructure addresses five primary concerns of network deployment:

• High availability
• Quality of service (QoS)
• Security
• Mobility and
• Scalability Reference: http://www.cisco.com/en/US/netsol/netwarch/ns19/ns24/networking_solutions_audience_business_
  benefit0918 6a008009d678.html

QUESTION 3 You are a technician at Cisco Sources. You inform your newly appointed Cisco Sources trainee that some Cisco switches perform processing such as Access Control List (ACL) in hardware. Your trainee now wants to know what action will take place if the hardware reaches its maximum storage capacity of ACLs What would your reply be? (Choose all that apply.)

A. Packets are dropped.

B. Packet filtering will be accomplished.

C. Performance is increased.

D. Performance is decreased. Answer: B D Explanation: Determining if the ACL Configuration Fits in Hardware As previously stated, ACL processing in the Catalyst 3550 switch is mostly accomplished in hardware. However, if the hardware reaches its capacity to store ACL configurations, the switch software attempts to fit a simpler configuration into the hardware. This simpler configuration does not do all the filtering that has been configured, but instead sends some or all packets to the CPU to be filtered by software. In this way, all configured filtering will be accomplished, but performance is greatly decreased when the filtering is done in software. Reference: http://www.cisco.com/en/US/products/hw/switches/ps646/products_configuration_guide_chapter09186a008007 e701.html

QUESTION 4 Which of the following captures the speed of switching and scalability of routing?

A. Layer 3 switching

B. Fast switching

C. Layer 2 routing

D. Process routing Answer: A Explanation: Layer 3 switching is hardware-based routing. In particular, packet forwarding is handled by specialized hardware ASICs. A layer 3 switch does everything to a packet that a traditional router does. Reference: Building Cisco Multilayer Switched Networks (Ciscopress) page 18

QUESTION 5 Drag and drop the type of flow mask used with Multiplayer Switching (MLS) in the options column to the statement that defines its character in the target column.

Answer: Destination-IP - Used when no access list are configured Source- Destination -IP - Used when standard access list is configured IP-Flow - Used when extended access list is configured Explanation: Flow Mask

• Destination-IP - This mode is used if no access list are configured on any of the MLS router interfaces.
• Source- Destination -IP - This mode is used if there is a standard access list on any of the MLS interfaces.
• IP-Flow -This mode is used if there is an extended access list on any MLS interfaces. Reference: Building Cisco Multilayer Switched Networks (Ciscopress) page 234-235

QUESTION 6 Which of the following features of VLAN maps do not contain a match clause?

A. Implicit deny feature at end of list.

B. Implicit deny feature at start of list.

C. Implicit forward feature at end of list

D. Implicit forward feature at start of list. Answer: A Explanation: Each VLAN access map can consist of one or more map sequences, each sequence with a match clause and an action clause. The match clause specifies IP, IPX, or MAC ACLs for traffic filtering and the action clause specifies the action to be taken when a match occurs. When a flow matches a permit ACL entry the associated action is taken and the flow is not checked against the remaining sequences. When a flow matches a deny ACL entry, it will be checked against the next ACL in the same sequence or the next sequence. If a flow does not match any ACL entry and at least one ACL is configured for that packet type, the packet is denied. Reference: http://www.cisco.com/en/US/products/hw/switches/ps700/products_configuration_guide_chapter09186a008007 f4d4.html

QUESTION 7 In which states is the Spanning Tree protocol (STP) affected by the forward delay parameter? (Choose all that apply.)

A. Forwarding

B. Listening

C. Blocking

D. Disabled

E. Learning Answer: B, E Explanation: Listen - The switch listens for a period of time called the fwd delay (forward delay) Learn - The switch learns for a period of time called the fwd delay (forward delay) Reference: Building Cisco Multilayer Switched Networks (Ciscopress) page 139

QUESTION 8 When using the CGMP protocol, CGMP-enabled switches and routers exchange a certain type of information. Which one of the following is exchanged?

A. Summarized IGMP information.

B. Multicast group to port assignments.

C. Multicast join and leave events.

D. CAM table changes. Answer: C Explanation: CGMP is based on a client/server model. The router is considered a CGMP server, with the switch taking on the client role. The basis of CGMP is that the IP multicast router sees all ICMP packets and therefore can inform the switch when specific hosts join or leave multicast groups. The switch then uses this information to construct a forwarding table. Reference: Building Cisco Multilayer Switched Networks (Ciscopress) page 306

QUESTION 9 Which three network features are necessary for high availability? (Choose all that apply.)

A. Spanning Tree Protocol (STP)

B. Delay reduction

C. Hot Standby Routing Protocol (HSRP)

D. Dynamic routing protocols

E. Quality of Service (QoS)

F. Jitter management Answer: A C D Explanation: Because the importance of high availability networks is increasingly being recognized, many organizations are beginning to make reliability/availability features a key selection criteria for network infrastructure products. With this in mind, Cisco Systems engaged ZD Tag to observe and confirm the results of a series of tests demonstrating the high availability features of Cisco Catalyst Layer 2/Layer 3 switches. In order to maximize the relevance of the results, the demonstration was based on a model of a "real world" campus (in one of Cisco's Enterprise Solution Center labs in San Jose, California). This switched internetwork consisted of wiring closet, wiring center, and backbone switches and conformed to Cisco's modular three-tier (Access/Distribution/Core) design philosophy. The testing demonstrated the following high availability and resilience features of Catalyst switches:

• per-VLAN Spanning Tree (PVST) using Cisco's InterSwitch Link (ISL) and 802.1Q VLAN Trunking
• Cisco Spanning Tree Enhancements, including UplinkFast and PortFast
• Cisco Hot Standby Router Protocol (HSRP) and HSRP Track
• Cisco IOS per-destination load balancing over equal cost OSPF paths
• Cisco IOS fast convergence for OSPF Reference: http://www.cisco.com/warp/public/779/Largent/learn/technologies/campuslan.pdf

QUESTION 10 You are a technician at Cisco Sources. Your newly appointed Cisco Sources trainee wants to know why Dynamic Trunking Protocol (DTP) mode is 'desirable'. What would your reply be?

A. The interface is put into permanent trunking mode but prevented from generating DTP frames.

B. The interface actively attempts to convert the link to a trunk link.

C. The interface is put into a passive mode, waiting to convert the link to a trunk link.

D. The interface is put into permanent trunking mode and negotiates to convert the link into a trunk link. Answer: B Explanation: Desirable - makes the port actively attempt to convert the link to a trunk link. Reference: Building Cisco Multilayer Switched Networks (Ciscopress) page 105

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