CCNP Switch Ch2 Flashcards by Nicholas Phelps

Which of the following is true about campus networks?

a. The campus network describes the interconnections of servers in a data center.
b. The campus network describes the WAN interconnectivity between two sites and the head office.
c. The campus network describes the network devices that interconnect end users to applicaitions such as email, the untranet, or the Internet over wired or wireless onnections.

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Which of the following is a disadvantage of using flat Layer 2 networks?

a. Broadcast packets are flooded to every device in the network.
b. No IP boundary to administer IP-based access control.
c. A host flooding traffic onto the network effects every device.
d. Scalability is limited.
e. All of the above

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Why are networks designed with layers?

a. Allows focus within specific layers due to grouping, segmentation, and compartmentalization
b. Simplification of network design
c. Optimizes use of physical interconnects (links)
d. Optimizes applications of policies and access control
e. Eases network management
f. All of the above

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Identify the three layers of the hierarchical model for designing networks. (Choose three.)

a. Core
b. Access
c. Distribution
d. Enterprise edge
e. WAN
f. Wireless

A,B,C,D

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What is another common name for the core layer?

a. Backbone
b. Campus
c. Data Center
d. Routing layer

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In newer technology, what layers are referred to as the spine layer and the leaf layer?

a. The spine layer is the equivalent of the of the core layer, and the leaf is equivalent to the to the distribution layer.
b. The spine layer is equivalent to the access layer, and the leaf layer is equivalent to the distribution layer.
c. The spine layer is equivalent to the distribution layer, and the leaf layer is equivalent to the access layer.
d. The spine layer is equivalent to the core layer, and the leaf layer is equivalent to the access layer.

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Match each layer to its definition.

a. Core
b. Distribution
c. Access
1. Connects PCs, to wireless access points and IP phones
2. High-speed interconnectivity layer that generally supports routing capability
3. Aggregates access layer switches and provides for policy control

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Which of the following are generally true about recommended core layer designs?

a. Requires high-availability and resiliency
b. Connects critical application servers directly for optimal latency and bandwidth
c. Leverages fixed form factor switches in large enterprises

A,B,C,D,E,F,G

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In which layer are you most likely to find fixed Catalyst switches?

a. Access layer
b. Core layer
c. Distribution layer

False

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In which layer are you most likely to find modular Catalyst switches?

a. Access layer
b. Backbone layer
c. Core layer

A and C

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Which of the following are benefits to using Layer 3 in the access layer? (Choose two)

a Reduced cost

b. Reduced layer 2 domain
c. Reduced spanning -tree domain
d. Mobility

B and C

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Which of the following is the biggest disadvantage with using Layer 3 in the access layer using current technologies?

a. More difficult troubleshooting
b. Lack of broadcast forwarding
c. Native mobility without additional features
d. Lac of high availability

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A Layer 2 only switch make forwarding decisions based on what?

a. Source MAC address
b. Destination MAC address
c. Source IP address
d. Destination IP address

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What does a switch do when it does not know how to forward a frame?

a. Drops the frame
b. Floods the frame out all ports in the same Layer 2 domain except the source port
c. Stores the frame for later transmission
d. Resends the frame out the port where it was received

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The Layer 2 forwarding table of Cisco switches is also referred to ass which of the following?

a. CAM table
b. Routing table
c. MAC address table
d. FIB table

A,B,C,D,E,F

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Which of the following does a Layer 2 only Cisco Catalyst switch perform on an ingress frame?

a. Layer 2 forwarding for destination port
b. ACL for access control
c. NetFlow for statistics monitoring
d. QoS for classification, marking, and policing

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Which of the following are true about CAM and/or TCAM? (Choose three.)

a. TCAM stands for ternary content-adressable memory
b. CAM provides three results: 0, 1, and don’t care
c. Leveraging CAM and TCAM ensures line-rate performances of the switch
d. CAM and TCAM are software-based tables
e. TCAM is leveraged by QoS and ACL tables

Why is TCAM necessary for IP routing tables over CAM?

a. TCAM supports longest matching instead of match or not match
b. TCAM is faster than CAM
c. TCAM memory is cheaper than CAM

A,B,E

Cisco Catalyst switches leverage which of the following technologies for Layer 3 forwarding?

a. Route cahcing
b. Processor/CPU switching
c. NetFlow
d. CEF

Cisco Catalyst switches relay routing information to hardware components for additional performance and scalability (line-rate forwarding). What are the two common hardware types that receive relayed routing information?

a. Centralized
b. Distributed
c. Aggregated
d. Core-based

With regard to load balancing, what term describes the situation where less optimal use of all links occurs?

a. Reverse path forwarding (RPF)
b. Polarization
c. Inverser routing
d. Unicast flooding

B and C

What is the default load-balancing mechanism found on Cisco Catalyst switches?

a. Per-flow
b. Per-destination IP address
c. Per-packet
d. Per-destination MAC address

Which family of Cisco switches is specifically designed for data centers?

a. Catalyst 6500
b. Catalyst 2000
c. Nexus 7000
d. Catalyst 4500

What plane on a network device is accessed using SSH or SNMP?

a. management plane
b. control plane
c. forwarding plane
d. CAM

What feature of CEF allows for Layer 3 switches to use multiple paths? a. load-balancing b. hardware based forwarding c. route caching d. Netflow LAN switching

Which portion of the enterprise network provides access to network communication services for the end users and devices that are spread over a single geographic location? a. enterprise edge b. campus module c. WAN module d. Internet edge e. data center

What type of specialized memory is used to facilitate high performance switching in Cisco multilayer switches? a. content-addressable memory (CAM) b. ternary content addressable memory (TCAM) c. address resolution protocol (ARP) memory d. Cisco Express Forwarding (CEF) memory

A network designer must provide a rationale to a customer for a design that will move an enterprise from a flat network topology to a hierarchical network topology. Which two features of the hierarchical design make it the better choice? (Choose two.) a. reduced cost b. scalability c. less equipment required d. segmentation of broadcast domains e. lower bandwidth requirements

B and D

What are two responsibilities of devices that are located at the core layer of the hierarchical design model? (Choose two.) a. access list filtering b. packet manipulation c. high-speed backbone switching d. interconnection of distribution layer devices e. redundancy between the core devices only

C and D

What is true about TCAM lookups that are associated with CEF switching? a. TCAM includes only Layer 3 lookup information. b. A single TCAM lookup provides Layer 2, Layer 3, and ACL information. c. TCAM lookup tables are used only for the Layer 3 forwarding operation. d. TCAM lookup tables are used only for the rapid processing of ACLs within CEF.

What is the suggested solution for routing when Layer 3 routing is extended to the access layer? a. run an IGP at the access, distribution and core layers b. run an IGP between the distribution and core layers and use static default routes at the access layer c. use static rotue from the access to the distribution layer, use default static routes from the distribtuion to the core layer and use IGP amongst core layer devices d. run an IGP between distribution and core layers and rely on proxy ARP between the access and distribution layers

At what layer of the hierarchical design model would redistribution and summarization occur? a. core layer b. backbone layer c. access layer d. distribution layer

At what layer of the hierarchical model are MAC-based security controls implemented? a. access layer b. distribution layer c. collapsed core layer d. core layer

In terms of design, which layer of the hierarchical model is the most complex? a. access Layer b. distribution Layer c. collapsed core Layer d. core Layer

Why does extending layer 3 switching to the access layer improve scalability? a. VLANs are extended into the distribution layer. b. VLANs are terminated on the access layer devices. c. The access and distribution layers would not participate in the routing scheme. d. Layer 3 switching in the access layer is a cheaper implementation option.

For what is the control plane on a catalyst switch responsible? a. the catalyst switch does not have a Control Plane; it has a Management Plane b. control and remote management of the switch c. control of the routing protocols and processes running on the switch d. control of the layer 2 switching process used by the switch

Which two features are unavailable on a Layer 2 switch? (Choose two.) a. use of ASICs b. Internet Group Management Protocol (IGMP) snooping c. QoS marking d. Time to Live (TTL) decrementing e. rewrite of the source and destination MAC addresses

D and E

Which layer 3 switching method used by Catalyst switches offers the greatest performance? a. process switching b. CEF c. fast switching d. TCAM

In its network design, a company lists this equipment : ``` Two Catalyst 4503 Layer 3 switches One 5500 security appliance firewall Two Catalyst 6509 switches Two lightweight access points Two Catalyst 2960 switches ``` Which two types of devices from the list would be appropriate to use at the access layer to provide end-user connectivity? (Choose two.) a. Catalyst 4503 switches b. Cisco 5500 security appliance firewall c. Catalyst 6509 switches d. lightweight access points e. Catalyst 2960 switches

D and E

A user needs to access a file server that is located in another department. Which layer of the Cisco Hierarchical Network Model will process the traffic first? a. access b. core c. distribution d. control

Which statement is true about the CEF forwarding process? a. The FIB table contains the Layer 2 rewrite information. b. Adjacency table lookups use the closest Layer 3 prefix match. c. The adjacency table eliminates the need for the ARP protocol. d. After an IP prefix match is made, the process determines the associated Layer 2 header rewrite information from the adjacency table.

What is the purpose of the Cisco Enterprise Architecture and the hierarchical desgin? a. It replaces the three-layer hierarchical model with a flat network approach. b. Each element in the hierarchy has a specific set of functions and services that it offers and specific role. c. It provides services and functionality to the core layer by grouping various components into a single component that is located in the access layer. d. It reduces overall network traffic by grouping server farms, the management server, corporate intranet, and e-commerce routers in the same layer.