Module 10 – Exam 1. Which of the following statements are FALSE in regards to Auto QoS? The auto qos voip cisco-phone command should be used to enable Auto-QoS if the switch port is connected to a Cisco IP phone.This command issues only the mls qos trust device cisco-phone command under the interface. If the auto qos voip cisco-softphone command is used, if the packet does not have a DSCP value of 34, 36, or 46 or is out of profile, the switch changes the DSCP value to 0 When Auto-QoS is enabled, the switch configures ingress and egress queues on the port The auto qos voip trust command should be issued on a switch port that is connected to the interior of the network Question 1 of 19 2. Which of the following statements about connecting Cisco IP phones to Catalyst switch is FALSE? The Cisco IP phone and the switch exchange messages using CDP Cisco IP phones can be connected to the Catalyst switch using only an access port Explicit trunk port or access port configuration is not required on the phone itself Explicit trunk port or access port configuration is required on the phone itself Cisco IP phones can be connected to the Catalyst switch using either a trunk port or an access port The Cisco IP phone and the switch exchange messages using VTP Cisco IP phones can be connected to the Catalyst switch using only a trunk port Question 2 of 19 3. Click on the Exhibit. Based on this configuration, the switch will trust the QoS settings from frames and packets received on the port only if they are sent by a Cisco IP phone. Otherwise, the QoS settings will be untrusted. True False Question 3 of 19 4. Click on the Exhibit. The switch receives a voice packet with a DSCP value of EF. What is TRUE based on this output? The packet will be dropped as this is an untrusted interface The switch will rewrite the DSCP value to default The switch will send the frame out with a CoS value of 5 The packet DSCP value will be transmitted as it Question 4 of 19 5. Which of the following statements is TRUE in regards to the decimal DSCP range? The decimal DSCP range is from 1 to 63 The decimal DSCP range is from 1 to 64 The decimal DSCP range is from 0 to 63 The decimal DSCP range is from 0 to 64 Question 5 of 19 6. Which statement accurately describes bandwidth as it applies to LAN switches? Bandwidth is the capacity of the individual switch ports Bandwidth is the capacity of the forwarding engine Bandwidth is the capacity of the switch fabric Bandwidth is the capacity of the CAM or TCAM Question 6 of 19 7. What are the three sets of PHBs defined in Differentiated Services? Type of Service Assured Forwarding Class of Service Class Selector IP Precedence Expedited Forwarding Question 7 of 19 8. What does the Cisco Inline Power (ILP) method use to detect a device that requires Power over Ethernet (PoE)? PSE PD PSD FLP TLV Question 8 of 19 9. What are the primary differences between Cisco Inline Power (ILP) and the IEEE 802.3af standard? The configuration commands in Cisco Catalyst switches The amount of power that is available to the connected device The way that power is removed from the wire when a powered device is removed The method used for device discovery The CDP message format for either method Question 9 of 19 10. Which of the following is not a QoS model? Differentiated Services Best Effort Default Delivery Integrated Services Question 10 of 19 11. Which of the following can occur as a result of variable delay? Packet Loss Jitter Bandwidth Issues Delay Question 11 of 19 12. Click on the Exhibit. Based on this output, which of the following statements is TRUE? The switch will not honor QoS settings on received frames and packets The switch will honor QoS settings on received frames and packets All frames received by the switch will have their packet DSCP values rewritten The switch will not honor the CoS settings on frames and will rewrite the DSCP values on packets Question 12 of 19 13. What two components is the policer configured with? Rate Interval Burst Drop Threshold Question 13 of 19 14. Which of the following statements are TRUE in regards to trust settings? When Quality of Service is enabled on the switch, all switch ports are considered untrusted By default, when a Cisco IP phone is connected to a Catalyst switch, the switch instructs the phone to consider the port connected to the attached device as trusted When Quality of Service is enabled on the switch, all switch ports are considered rusted The IP phone should be trusted; however, the QoS settings from the device connected to the IP phone should not The IP phone should be untrusted; however, the QoS settings from the device connected to the IP phone should be By default, when a Cisco IP phone is connected to a Catalyst switch, the switch instructs the phone to consider the port connected to the attached device as untrusted Question 14 of 19 15. Which of the following statements about MVAPs are TRUE? A native VLAN for data traffic for the workstation connected to the IP phone is identified by the port VLAN identifier (PVID) An auxiliary VLAN for data traffic for the workstation connected to the IP phone is identified by the port VLAN identifier (PVID) Frames sent by the PC connected to the Cisco IP phone are not tagged They are access ports that operate in a manner similar to a trunk port An auxiliary VLAN for voice service is identified by the voice VLAN identified (VVID) They are trunk ports that operate in a manner similar to an access port A native VLAN for voice service is identified by the voice VLAN identified (VVID) Frames sent by the PC connected to the Cisco IP phone are tagged Question 15 of 19 16. DiffServ defines a new Differentiated Services Code Point (DSCP) field in the IP packet header by redefining the ToS byte and creating a replacement for the IP Precedence field with a new 6-byte field called the Differentiated Services (DS) field True False Question 16 of 19 17. Which of the following statements is FALSE in regards to Integrated Services and Differentiated Services? DiffServ redefines the ToS byte and creates a replacement for the IP Precedence field The primary issue with DiffServ is that is scales very poorly Differentiated Services performs admission control for each flow request Integrated Services performs admission control for each flow request IntServ defines the concept of service classes DiffServ defines the concept of service classes IntServ redefines the ToS byte and creates a replacement for the IP Precedence field The primary issue with IntServ is that is scales very poorly Question 17 of 19 18. Buffer overflows occur when multiple egress ports are contending for the same ingress port False True Question 18 of 19 19. The Assured Forwarding (AF) PHB set is used for two functions. What are they? Queuing Classification Policing Congestion Management Congestion Avoidance Question 19 of 19 Loading…
