CCNA 200-301 V1.1 EXAM QUESTIONS

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CCNA 200-301 V1.1 EXAM QUESTIONS

Actual Qs and Ans Expert-Verified Explanation

This Exam contains:

-Guarantee passing score -100 Questions and Answers -format set of multiple-choice -Expert-Verified Explanation

Question 1: Wireless encryption

Answer:

All wireless computers are radio transmitters and receivers:

• anyone can listen in.

Solution: encrypt the data:

• everyone has an encryption key.

Only people with the right key can transmit and listen:

• WPA2 and WPA3.

Question 2: Spine and leaf architecture

Answer:

Each leaf switches connects to each spine switch:

• each spine switch connects to each leaf switch.

Leaf switches do not connect to each other:

• same for spine switches.

Top-of-rack switching:

• each leaf is on the "top" of a physical network rack
• may include a group of physical racks

Advantages:

• simple cabling
• redundant
• fast

Disadvantages:

• additional switches may be costly.

Question 3: How CDP Works

Answer:

All Cisco devices transmit CDP packets periodically (default time interval value is 60 seconds though this is adjustable). These packets advertise a time-to-live (TTL) value in seconds, which indicates the number of seconds that the packet must be retained before it can be discarded (default value is 180 seconds).CDP packets are sent with a time-to-live value that is nonzero after an interface is enabled and With a time-to-live value of zero immediately before an interface is down. This provides quick state discovery.All Cisco devices receive CDP packets, process them and cache the information in the packet. Cisco devices never forward a CDP packet. If any information changes from the last received packet, the new information is cached and the older information is discarded even if its time-to-live value has not yet expired.

Question 4: LWAPP tunnels

Answer:

LWAPP allows tunneling within Ethernet frames (Layer 2) and within UDP packets (Layer 3).This is configurable on the WLC, but not all WLCs support Layer 2 tunneling, and a WLC can support only one tunnel type at a time.

Question 5: Carrier Packet Transport (CPT)

Answer:

This system is designed to help service providers transition from TDM networks to packet transport networks smoothly and efficiently.The CPT System is an integrated packet transport platform that enables service providers to deploy new packet transport networks.

Question 6: Cisco Unified Wireless Architecture components

Answer:

These include Access Points, the Wireless Lan Controller and the Wireless Control System.

Question 7: Half-duplex Ethernet collisions

Answer:

On a half-duplex link, collisions are normal:

• heavy utilization can cause excessive collisions.

Most Ethernet connections are full-duplex:

- where are the collisions coming from?Interface configuration issues:

• Duplex mismatch.

Hardware issue:

• could indicate a bad NIC or bad driver.

Question 8: LLDP MED (Media Endpoint Discovery)

Answer:

This feature provides additional capabilities to support media endpoint devices such as to enable the advertisement of network policies for applications like voice or video, device location discovery, and troubleshooting information. An LLDP-MED network policy is a set of configuration settings used for real-time applications such as voice or video. Each outgoing LLDP packets to the attached media endpoint device will have a network policy included to it. The MED sends its traffic as defined on the network policy.

Question 9: Lightweight APs

Answer:

APs in this category consist of the original Airespace product line, but also include select autonomous AP models above.

The following lightweight models can be used only in WLC topologies:

AP 1010-Dual band, zero touch, 802.11a/b/g AP intended for basic enterprise LWAPP/WLC deployments. The 1010 comes with dual internal sector antennas.?AP 1020-Similar to the 1010, but in addition to its internal sector antennas, it also includes RP-TNC connectors for external 2.4 and 5 GHz antennas.?AP 1030-Also referred to as the REAP AP or Remote Edge AP, the 1030 possesses the same capabilities, features, and performance as the 1020, in addition to being able to be deployed in environments where it is not practical to deploy a WLC, such as in small branch offices.?AP 1500-A dual band AP specifically designed for outdoor, point-to-point, and multipoint MESH deployments. The 802.11a band is used for backhaul while the b/g band is used for wireless client access. The 1500 uses (patent pending) Adaptive Wireless Path Protocol (AWPP) for optimal routing through MESH topologies.

Question 10: Disabled port

Answer:

This type of port has no role within the operation of the spanning tree.

Question 11: Rapid PVST+ (Rapid per VLAN Spanning Tree plus)

Answer:

This is an updated implementation of STP that allows you to create one spanning tree topology for each VLAN.This is the default STP mode on the switch.Rapid Spanning Tree Protocol (RSTP) is implemented on a per VLAN basis, while Rapid PVST+ interoperates with the IEEE 802.1D standard, which mandates a single STP instance for all VLANs,

rather than per VLAN.Enabled by default on the default VLAN (VLAN1) and on all newly created VLANs in software

Question 12: Blocking State

Answer:

A LAN port in the blocking state does not participate in frame forwarding.

A LAN port in the blocking state performs as follows:

• Discards frames received from the attached segment.
• Discards frames switched from another port for forwarding.
• Does not incorporate the end station location into its address database. (There is no learning on a

blocking LAN port, so there is no address database update.)

• Receives BPDUs and directs them to the system module.
• Receives, processes, and transmits BPDUs received from the system module.
• Receives and responds to network management messages.

Question 13: Extending the WiFi network

Answer:

Most organizations have more than one access point:

• Tens or hundreds

Wireless network names can be used across access points:

• makes it easier to roam from one part of the network to another.

The network name shared across access points is an ESSID (Extended Service Set Identifier).

Your device automatically roams when moving between access points:

• you don't have to manually reconnect

Question 14: Layer 2 discovery protocols

Answer:

Examples:

• Cisco Discovery Protocol (CDP)
• Link Layer Dependency Protocol (LLDP)

Question 15: Layer 2 LWAPP

Answer:

When using Layer 2 LWAPP, the WLC and the LWAPP APs still require IP addresses, but the Layer 2 LWAPP connection uses Ethertype 0xBBBB to encapsulate the LWAPP traffic between the AP and the WLC, and all interaction between the LWAPP AP and the WLC are within the Ethertype 0xBBBB.Although Layer 2 LWAPP is one of the simplest ways to establish LWAPP connection, and is sometimes the easiest way for the initial configuration of APs or troubleshooting AP WLC connectivity, it is not generally recommended for enterprise deployment.

The primary reasons for Layer 2 LWAPP not being recommended are the following:

?The need to provide a Layer 2 connection between the LWAPP APs and the WLC limits the location of