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Which Quality of Service (QoS) mechanism is used to identify traffic flow and to use DSCP, IP Precedence values, and MPLS EXP bits to create different priority levels?
Answer: D
I go with D because the key sentence here is "to create different priority levels?" Yes marking adds bits to packets inorder to identify them, however it doesn't create different priority levels.
Source: Adapted from community discussion — Pilgrim5
What are two valid modes that Cisco Express Forwarding can operate in? (Choose two.)
Answer: AD
CEF can be enabled in one of two modes: Central CEF mode - When CEF mode is enabled, the CEF FIB and adjacency tables reside on the route processor, and the route processor performs the express forwarding. You can use CEF mode when line cards are not available for CEF switching, or when you need to use features not compatible with distributed CEF switching. Distributed CEF (dCEF) mode - When dCEF is enabled, line cards maintain identical copies of the FIB and adjacency tables. The line cards can perform the express forwarding by themselves, and this relieves the main processor - Gigabit Route Processor (GRP) - of involvement in the switching operation. This is the only switching method available on the Cisco 12000 Series Router. https://www.cisco.com/c/en/us/support/docs/routers/12000-series-routers/47321-ciscoef.html
Source: Adapted from community discussion — Tacolicious
You need to weigh the pros and cons of deploying a premise-based data center versus using a cloud-based data center deployment. What is an advantage of using a premise-based solution? (Choose two.)
Answer: AE
AE sounds like the only two correct-ish answers in this one, but A is kinda debatable since especially with Work from home culture / VPN's, it doesn't really matter anymore since you'd always connect either to on-prem, or to a cloud environment.
Source: Adapted from community discussion — Tacolicious
Which Quality of Service (QoS) mechanism allows for the creation of multiple levels of QoS policy, providing a more granular degree of traffic management?
Answer: B
Hierarchical QoS allows you to specify QoS behavior at multiple policy levels, which provides a high degree of granularity in traffic management. A hierarchical policy is a QoS model that enables you to specify QoS behavior at multiple levels of hierarchy. From: https://www.cisco.com/c/en/us/td/docs/routers/asr9000/software/asr9k_r4-2/qos/configuration/guide/qc42hqos.html#wp1236859
Source: Adapted from community discussion — AndreasThornus
Which Quality of Service (QoS) mechanism allows the network administrator to control the maximum rate of traffic received or sent on a given interface?
Answer: A
Traffic Policing In general, traffic policing allows you to control the maximum rate of traffic sent or received on an interface and to partition a network into multiple priority levels or class of service (CoS).
Source: Adapted from community discussion — Jebrony
Refer to the following two images regarding QoS Traffic Shaping and Traffic Policing: Image A:
Image B:
Based on the images, which of the following are true? (Choose two.)
Answer: BC
Which two GRE features are configured to prevent fragmentation? (Choose two.)
Answer: BC
Some Sites will have this A. TCP MSScorrect B. IP MTU C. TCP window size D. DF bit Clear E. MTU ignore F. PMTUD the right answer will be TCP MSS & PMTUD
Source: Adapted from community discussion — TTTTTT
In a Cisco SD-Access fabric architecture, which of the following are valid device roles (Choose three.)
Answer: ACD
Which of the following are valid statements when configuring Nonstop Forwarding (NSF) with Stateful Switchover (SSO) on a Cisco device? (Choose two.)
Answer: CD
NSF capability is supported for IPv4 routing protocols only. NSF capability is not supported for IPv6 routing protocols. NSF does not support IP Multicast Routing, as it is not SSO-aware. You must configure SSO in order to use NSF with any supported protocol. The Hot Standby Routing Protocol (HSRP) is not supported with NSF SSO. Do not use HSRP with NSF SSO. https://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst9400/software/release/16-6/configuration_guide/stck_mgr_ha/b_166_nsf_sso_9400_cg.html
Source: Adapted from community discussion — Huntkey
In a Cisco SD-Access wireless network, which device is used as an entry and exit point in and out of the fabric?
Answer: C
SUPER Confusing question but i will decipher it for you: The answer is 100% C and here's why: Here is a question for you: What is one fact about Cisco SD-Access wireless network infrastructure deployments? A. The access point is part of the fabric overlay. < Correct B. The wireless client is part of the fabric overlay. C. The access point is part of the fabric underlay. D. The WLC is part of the fabric underlay So this means Wireless Clients ARE NOT PART OF THE Wireless FABRIC. So if they are not part of the Fabric which Device do they use to enter the Fabric ? = (The AP). Which device do they use to Exit the Fabric ? It cannot be the AP because they use it to enter it. (The only device that a client can use to exit the Fabric is a Border Router) You're welcome :)
Source: Adapted from community discussion — Clauster
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