Share your ARCH Experience

@AST

the question or answer is wrong

Which statement is correct regarding NBAR and NetFlow?
A. NetFlow uses five key fields for the flow.
B. NBAR examines data in Layers 3 and 4.
C. NetFlow examines data in Layers 3 and 4.
D. NBAR examines data in Layers 2 through 4.
E. NetFlow examines data in Layers 2 through 4.

I would say B and C are correct, it is true NBAR also adds layer 7.

sat for the test this morning – 698/1000 FAIL

I studied 709q, knew it like the back of my hand. The majority of my questions I was unfamiliar with.

sorry @anon did you see these questions posted from anonymous,superman and myself.

@superman
During an upgrade of an existing data center, a network team must design segmentation into existing networks. Due to legacy applications, the IP addresses cannot change. Which firewall deployment model meets these requirements?
A. routed mode
B. multicontext mode
C. transparent mode
D. cluster mode

B . “You can partition a single security appliance into multiple virtual devices, known as security contexts. Each context is an independent device, with its own security policy, interfaces, and administrators. Multiple contexts are similar to having multiple standalone devices. Many features are supported in multiple context mode, including routing tables, firewall features, IPS, and management. Some features are not supported, including VPN and dynamic routing protocols. ” source h***s://www.cisco.com/c/en/us/td/docs/security/asa/asa72/configuration/guide/conf_gd/contexts.html

i didnt have EOR question but TOR

Management has chosen to implement top of rack data center design. which two benefits of moving to this model are true

a decreased cabling cost
b easier per rack upgrade
c directly connected racks in the row
d fewer ports required in the aggregation
e few switches to manage

A and B

h**p://bradhedlund.com/2009/04/05/top-of-rack-vs-end-of-row-data-center-designs/

Summary of Top of Rack advantages (Pro’s):

Copper stays “In Rack”. No large copper cabling infrastructure required.
Lower cabling costs. Less infrastructure dedicated to cabling and patching. Cleaner cable management.
Modular and flexible “per rack” architecture. Easy “per rack” upgrades/changes.

so some of those are there – but I encountered a far greater number of questions I had never seen. I’d love to give you guys hope, but the test is just not that “dumpable” at the moment. and i fear that it’s about to get much worse in Feb. The 410q vce I didn’t study as you guys are. Maybe that will prove to be a better fit for the actual exam. I wish I could help more! Good luck to anyone making an attempt in the coming days/weeks! I’m going to take TSHOOT again to update my CCNP instead. Thanks as well to @Anonymous, @Ast, @MFD/MDF, and @Superman – this chat is at least turning around from the toxicity it was plagued with for months!

@anonymous

let me know what you think

Which two options are advantages of having a modular design instead of an EOR design in a data center? (Choose two.)
A. cooling constraints
B. cable bulk
C. decreased STP processing
D. redundancy options
E. cost minimization
F. low-skilled manager

C (Racks connected at Layer 1. Fewer STP instances to manage (per row, rather than per rack).
E: ( lower skill set required to replace a 48-port line card, versus replacing a 48-port switch.. Potentially lower switch costs, lower maintenance costs.)

Summary of End of Row advantages (Pro’s):

Fewer switches to manage. Potentially lower switch costs, lower maintenance costs.
Fewer ports required in the aggregation.
Racks connected at Layer 1. Fewer STP instances to manage (per row, rather than per rack).
Longer life, high availability, modular platform for server access.
Unique control plane per hundreds of ports (per modular switch), lower skill set required to replace a 48-port line card, versus replacing a 48-port switch.

vPC question i have is different
What is an advantage of using the vPC feature in a data center environment?

a the two switches form a single control plan
b all available uplink bandwidth is utilized
c FHRP is not required
D A single IP is used for management of both devices

answer B

vPC provides the following technical benefits:●Eliminates Spanning Tree Protocol (STP) blocked ports●Uses all available uplink bandwidth●Allows dual-homed servers to operate in active-active mode●Provides fast convergence upon link or device failure●Offers dual active/active default gateways for server

cisco.com/c/dam/en/us/td/docs/switches/datacenter/sw/design/vpc_design/vpc_best_practices_design_guide.pdf

@MFD I would agree

Management has chosen to implement top of rack data center design. which two benefits of moving to this model are true

a decreased cabling cost
b easier per rack upgrade

A and B

@MDF I would agree in this one.

vPC question i have is different
What is an advantage of using the vPC feature in a data center environment?

a the two switches form a single control plan
b all available uplink bandwidth is utilized
c FHRP is not required
D A single IP is used for management of both devices

answer B

@anon

Can you remember what question you got? Are they whaat AST posted on Dec 27th?

1. d&D for iACL, ARP inspection, DHCP snooping, iWAN question,
2. new BGP questions,
3. OSPF new questions with three area diagram (area 10, area 100, and new site with ospf and rip to link back to area 10),
4. STP root switch selection without priority config
5. iWAN design at low cost
6. new qos question
7. new multicast question
8. separate application and not allow to connect, bandwidth increase except (same epg, same epg with filter, domain network, …)
9. customer inquired about SPT, (delay interval, rspt, …0
10. ipv6 migration without affecting the ipv4 operation. (dual stuck, hybrid, …)
11. Low cost security solutions for branch office (ASA with multicontext, …)
12. OSPF diagram (NSSA, normal, totally stubby, backbone)
13. New MSDP multiple choice (MSDP, BGP, ..)

@MFD

Which two options are advantages of having a modular design instead of an EOR design in a data center? (Choose two.)
A. cooling constraints
B. cable bulk
C. decreased STP processing
D. redundancy options
E. cost minimization
F. low-skilled manager

I would go for B, and D

A. cooling constraints – thiswould increase
B. cable bulk – less cable to EOR
C. decreased STP processing – EOR would have servers connected directly to switch, modular would run it own STP.

D. redundancy options – more uplinks, bandwidth, additional PSU’s
E. cost minimization – TOR would cost more.
F. low-skilled manager –

I heard about these dump. it’s seems very recent.
h t t p s : / / drive.google.com / file/d/1SAy8UXLsF1VAfgTiNWL36sNkxN952mtz/view?usp=sharing

@anonymous

yea a lot of that is very familiar. I wish I could remember more details for you guys. Sorry I can’t.

@anon

I would book a retest soon, I have always passed on the second try, read around the subject listed by AST. If you understand the subject material you should pass. That is my plan.

@annoymous if the EOR question

the way i looked at this question i eliminated what i read are disadvantages.

check the website does a good job explaining **bradhedlund.com/2009/04/05/top-of-rack-vs-end-of-row-data-center-designs/

cable bulk is a disadvantage and you build redunacy with both EOR and TOR
“For a redundant design there might be two bundles of copper to each rack, each running to opposite “End of Row” network racksFor a redundant design there might be two bundles of copper to each rack, each running to opposite “End of Row” network racks”

Summary of End of Row disadvantages (Con’s):

Requires an expensive, bulky, rigid, copper cabling infrastructure. Fraught with cable management challenges.
More infrastructure required for patching and cable management.

@anonymous another good 1
an engineer wants to assure that hosts can locate routers than can be used as a gateway to reach – IP based devices on other networks . which first hop redundancy protocol accomplished this goal.

a GSLB
b GLBP
c IRDP
D VRRP
E HSRP

answer c “google confiugre cisco IRDP ”
The ICMP Router Discovery Protocol (IRDP) allows IPv4 hosts to locate routers that provide IPv4 connectivity to other (nonlocal) IP networks. ICMP Router Discovery Protocol (IRDP) allows hosts to locate routers that can be used as a gateway to reach IP-based devices on other networks.

what added enforcement feature is availableon IDS based devices to terminate active malicious traffic?

A layer 4 filtering
B SNMP alert
C Signature detection
D TCP Reset

Figure 4-1 Basic Cisco Secure IDS Configuration.

TCP Reset Packets

The Transmission Control Protocol (TCP) provides a connection-oriented communication mechanism. The connection is established through a three-way handshake. To terminate a connection, each side of the connection can send a FIN packet, signaling the end of the connection. It also is possible for one side of the connection to abruptly terminate the connection by sending a TCP reset packet (a packet with the RST flag set) to the other side. The sensor uses this approach to terminate an attacker TCP connection.

@anonymous
12. OSPF diagram (NSSA, normal, totally stubby, backbone)

this exhibit has the big circle of OSPF area 0 with branch routers in boxes on the outside of the circle

The Branch routers have external connectivity to an upstream Area 0 router. An engineer has been asked to propose a simplified OSPF routing design that provisions only a default route to the branches. . the Branch router must receive no other routes from the upstream router. which typ of ospf area does the engineer implement for the branches.

A normal area
B stubby area
C Not-so-stubby area
D totally stubby area

CCDP book page 116 of 941 “the Totally stubby areas receive only a default route from the ABR.

@MDF
12. OSPF diagram (NSSA, normal, totally stubby, backbone)

this exhibit has the big circle of OSPF area 0 with branch routers in boxes on the outside of the circle

The Branch routers have external connectivity to an upstream Area 0 router. An engineer has been asked to propose a simplified OSPF routing design that provisions only a default route to the branches. . the Branch router must receive no other routes from the upstream router. which typ of ospf area does the engineer implement for the branches.

A normal area
B stubby area
C Not-so-stubby area
D totally stubby area

CCDP book page 116 of 941 “the Totally stubby areas receive only a default route from the ABR.

Yes it is stubby, have implemented this configuration in production.

Dont forget new question

Diagram with three ospf areas, question is, new branch office (acquired company) need to link back to backbone area, through another area in the middle which is area 100.
The answer should be (Virtual link area 100).
Not able to recall other answer.

Dont forget to check this out but make sure you check the comment as answers were wrong.

examtopics.com/exams/cisco/300-320/

A company requires redundancy for its multihomed BGP external connections. What two features can be configured on the WAN routers to automate failover for both outbound and inbound traffic? (Choose two.)
A. AS path prepending
B. local preference
C. floating static route
D. HSRP
E. MED
F. weight

Answer should be A and D. (Not A and B)

Which virtualization technology uses Layer 3 BFD to detect network failures between network devices?
A. VTP
B. VSS
C. vPC
D. Cisco Fabric Path
Answer should be B: VSS

An organization is using a link state routing protocol that is not dependent on IP addressing. Which action should be taken to enable routing across area boundaries in this environment?
A. Assign Level 1 router interfaces to different areas
B. Assign Level 2 routers to different areas
C. Assign Level 1 routers to different areas
D. Assign Level 2 router interfaces to different areas
E. Assign Level 2 router interface to the backbone area
F. Assign Level 1 router interface to the backbone area

Looking for answer

A company wants to configure BGP on a router so that other BGP neighbors cannot influence the path of a particular route.
Which action must be taken to accomplish this configuration?
A. Configure a low router ID for the route.
B. Configure a high local preference for the route.
C. Configure a high weight for the route.
D. Configure a low MED for the route.
Answer B;(Not C, Local Preference is a way of configuring a router to be the preferred router, and it notifies all it’s neighbors of this)
oswalt.dev/2011/09/bgp-weight-and-local-preference/

While troubleshooting an Application Centric network cluster, an engineer sees that an APIC has gone offline.
What is the minimum number of APICs required for a production ACI fabric to continue to operate?
A. 1
B. 2
C. 3
D. 4
Answer: A (minimum number Not recommend number)

On the last day of 2019, I would like to share my test experience with you. There are many ways that we should try. Instead of taking the test after being unsure, we might as well use a dump to take the test safely. It is guaranteed, with a certain passing rate, simple memory can pass the exam. Of course, Cisco will usher in a major reform in February 2020. After a month, the dump will be extremely unstable, so I think it is the best time to take the exam. In other words, after March 2020, it will also be a good time for the exam. Join us to take you to the latest Cisco news to help you pass the exam smoothly and happily. happy New Year! There is no need to say that I am a spammer, everyone has the right to choose how to pass the exam.

How does stub routing affect transit routes in EIGRP?
A. Transit routes are passed from a stub network to a hub network.
B. It is designed to prevent the distribution of external routes.
C. It prevents the hub router from advertising networks learned from the spokes.
D. Transit routes are filtered from stub networks to the network hub.
Looking for answer.

Which two characteristics of MSDP when designing an interdomain multicast network are true? (Choose two.)
A. MSDP is a mechanism that allows RPs to share information about active sources.
B. Any network utilizing iBGP or eBGP can use MSDP.
C. In the PIM-SM model, multicast sources and receivers must register with their local RP.
D. RPs in other domains have full knowledge of sources located in other domains.
E. The MSDP speaker periodically sends SAs that include all sources in all discovered domains.

Looking for answer.

A company is building a large data center. About 80% of its traffic will be North to South and the other 20% will be east to west. The company is also expecting a significant amount of data center growth over the next 5-10 years but wants to keep the cost of growth low. Which data center design is best suited to meet these goals?
A. A spine and leaf design with layer 2/3 termination on the leaf nodes
B. A two-tier design with the layer 2 termination on data center core
C. A spine and leaf design with layer 2/3 termination on the spine nodes
D. A three-tier design with a layer 3 termination on the data center core

A or B, Pls advise

While designing a backup BGP solution, a network engineer wants to ensure that a single router with multiple connections prefers the routes from a specific connection over all others. Which BGP path selection attribute is considered first when selecting a route?
A. AS-LENGTH
B. MED
C. link bandwidth
D. WEIGHT

Answer should be A, instead of D. (due to prefer the routes from a specific connection over all others).

An organization is acquiring another company and merging the two company networks. No subnets overlap, but the engineer must limit the networks advertised to the new organization. Which feature implements this requirement?
A. route filtering
B. stub area
C. passive interface
D. interface ACL
Confusing A or B

@ast

Diagram with three ospf areas, question is, new branch office (acquired company) need to link back to backbone area, through another area in the middle which is area 100.
The answer should be (Virtual link area 100).
Not able to recall other answer.
I would say Virtual link also, this is an TSHOOT exam practical

@ast

A company requires redundancy for its multihomed BGP external connections.
What two features can be configured on the WAN routers to automate failover
for both outbound and inbound traffic? (Choose two.)

A. AS path prepending
B. local preference
C. floating static route
D. HSRP
E. MED
F. weight

Answer should be A and D. (Not A and B)

Correct Answer: AD
cisco.com /c/en/us/support/docs/ip/border-gateway-protocol-bgp/13768-hsrpbgp.html

This document describes how to provide redundancy in a multihomed Border Gateway Protocol (BGP)
network where you have connections to two separate Internet service providers (ISPs). In the event of a
failure of connectivity toward one ISP, the traffic is rerouted dynamically through the other ISP with the BGP
set AS path {tag | prepend as-path-string} command and Hot Standby Router Protocol (HSRP)

@ast

Which virtualization technology uses Layer 3 BFD to detect network failures between network devices?
A. VTP
B. VSS
C. vPC
D. Cisco Fabric Path
Answer should be B: VSS

using cisco.com/c/en/us/td/docs/switches/lan/catalyst6500/ios/12-2SX/ configuration/guide/book/vss.pdf

If the original VSS active chassis is still operational, both chassis are now VSS active. This situation is
called a dual-active scenario. A dual-active scenario can have adverse affects on network stability,
because both chassis use the same IP addresses, SSH keys, and STP bridge ID. The VSS must detect a
dual-active scenario and take recovery action.
The VSS supports these three methods for detecting a dual-active scenario:
• Enhanced PAgP—Uses PAgP messaging over the MEC links to communicate between the two
chassis through a neighbor switch. Enhanced PAgP is faster than IP BFD, but requires a neighbor
switch that supports the PAgP enhancements.
• IP Bidirectional Forwarding Detection (BFD)—Uses BFD messaging over a backup Ethernet
connection. IP BFD uses a direct connection between the two chassis and does not require support
from a neighbor switch.
• dual-active fast-hello—Uses special hello messages over a backup Ethernet connection. Dual-active
fast-hello is faster than IP BFD and does not require support from a neighbor

So I would agree answer B, VSS

@ast

How does stub routing affect transit routes in EIGRP?
A. Transit routes are passed from a stub network to a hub network.
B. It is designed to prevent the distribution of external routes.
C. It prevents the hub router from advertising networks learned from the spokes.
D. Transit routes are filtered from stub networks to the network hub.

C.

Which two characteristics of MSDP when designing an interdomain multicast network are true? (Choose two.)
A. MSDP is a mechanism that allows RPs to share information about active sources.
B. Any network utilizing iBGP or eBGP can use MSDP.
C. In the PIM-SM model, multicast sources and receivers must register with their local RP.
D. RPs in other domains have full knowledge of sources located in other domains.
E. The MSDP speaker periodically sends SAs that include all sources in all discovered domains.

A and C

@ast

A company wants to configure BGP on a router so that other BGP neighbors cannot influence the path of a particular route.
Which action must be taken to accomplish this configuration?
A. Configure a low router ID for the route.
B. Configure a high local preference for the route.
C. Configure a high weight for the route.
D. Configure a low MED for the route.
Answer B;(Not C, Local Preference is a way of configuring a router to be the preferred router, and it notifies all it’s neighbors of this)
oswalt.dev/2011/09/bgp-weight-and-local-preference/

Using the above link as reference, so we want R1 to route to R2 or R3 using R1 only to make the decision, weight is the way to go, as local preference is configured on one of the peer routers, R2.

So I would say C. This is open for discussion.

@ast

An organization is acquiring another company and merging the two company networks. No subnets overlap, but the engineer must limit the networks advertised to the new organization. Which feature implements this requirement?
A. route filtering
B. stub area
C. passive interface
D. interface ACL

A.

@MDF

How does stub routing affect transit routes in EIGRP?

Which two characteristics of MSDP when designing an interdomain multicast network are true?

What source reference did you refer to?

@MDF

How does stub routing affect transit routes in EIGRP?

I agree C

Which two characteristics of MSDP when designing an interdomain multicast network are true?

A and C, I would agree also, after watching CBT nuggets on PIM-SM

@MDF

An organization is acquiring another company and merging the two company networks. No subnets overlap, but the engineer must limit the networks advertised to the new organization. Which feature implements this requirement?

Agree route filtering, done this myself in production.

@ast

A company is building a large data center. About 80% of its traffic will be North to South and the other 20% will be east to west. The company is also expecting a significant amount of data center growth over the next 5-10 years but wants to keep the cost of growth low. Which data center design is best suited to meet these goals?
A. A spine and leaf design with layer 2/3 termination on the leaf nodes
B. A two-tier design with the layer 2 termination on data center core
C. A spine and leaf design with layer 2/3 termination on the spine nodes
D. A three-tier design with a layer 3

A (questions stated datacenter where spine leaf architecture is used )

@ast

Source cisco.com/c/en/us/td/docs/ios-xml/ios/iproute_eigrp/configuration/15-mt/ire-15-mt-book/ire-eigrp-stub-rtg.html?bookSearch=true

“The stub routing feature by itself does not prevent routes from being advertised to the remote device.”

An engineer is designing a new data center network so that the topology maintains fewer uplinks to the aggregation layer to reduce STP processing requirements. What data center topology meets the RFP requirements?
A. mesh
B. top of rack
C. star
D. end of row

Answer should be B

Which virtualization technology uses Layer 3 BFD to detect network failures between network devices?
A. VTP
B. VSS
C. vPC
D. Cisco Fabric Path
Answer should be B: VSS

I found fabric path also use L3 BFD
cisco.com/c/dam/en/us/products/collateral/switches/nexus-7000-series-switches/white_paper_c07-728188.pdf

@ast @mdf

A company is building a large data center.

Spine and Leaf is Cisco’s pay as you scale design, so I would agree with MDF, A

A. A spine and leaf design with layer 2/3 termination on the leaf nodes

@ast

Which virtualization technology uses Layer 3 BFD to detect network failures between network devices?

Is “Cisco Fabric Path” classed has a virtualization technology still think its VSS

@asf

An engineer is designing a new data center network so that the topology maintains fewer uplinks to the aggregation layer to reduce STP processing requirements. What data center topology meets the RFP requirements?
A. mesh
B. top of rack
C. star
D. end of row

If you are using switches it would be D, not B, however if you are using TOR FEX’s it could be B.

Source bradhedlund.com/2009/04/05/ top-of-rack-vs-end-of-row-data-center-designs/

Summary of Top of Rack disadvantages (Con’s):

More switches to manage. More ports required in the aggregation.
Potential scalability concerns (STP Logical ports, aggregation switch density).
More Layer 2 server-to-server traffic in the aggregation.
Racks connected at Layer 2. More STP instances to manage.
Unique control plane per 48-ports (per switch), higher skill set needed for switch replacement.

Summary of End of Row advantages (Pro’s):

Fewer ports required in the aggregation.

Summary of Top of Rack Fabric Extender advantages (Pro’s):

Fewer switches to manage. Fewer ports required in the aggregation area. (End of Row)
Racks connected at Layer 1 via fiber, extending Layer 1 copper to servers in-rack. Fewer STP instances to manage. (End of Row)
Unique control plane per hundreds of ports, lower skill set required for replacement. (End of Row)
Copper stays “In Rack”. No large copper cabling infrastructure required. (Top of Rack)
Lower cabling costs. Less infrastructure dedicated to cabling and patching. Cleaner cable management. (Top of Rack)
Modular and flexible “per rack” architecture. Easy “per rack” upgrades/changes. (Top of Rack)
Future proofed fiber infrastructure, sustaining transitions to 40G and 100G. (Top of Rack)
Short copper cabling to servers allows for low power, low cost 1oGE (10GBASE-CX1), 40G in the future. (Top of Rack)

Which two options are advantages of having a modular design instead of an EOR design in a data center? (Choose two.)
A. cooling constraints
B. cable bulk
C. decreased STP processing
D. redundancy options
E. cost minimization
F. low-skilled manager

shouldn’t be A and B, due to Instead of an EOR (EOR cons : cooling constrains due to cabling from each server to aggregation switches, modular design should kill those two constrains).

Which two options are advantages of having a modular design instead of an EOR design in a data center? (Choose two.)
A. cooling constraints
B. cable bulk
C. decreased STP processing
D. redundancy options
E. cost minimization
F. low-skilled manager

After reading, modular design mean TOR.
I think B: cable bulk and D: redundancy options

cisco.co*m/c/en/us/td/docs/solutions/Enterprise/Data_Center/DC_Infra2_5/DCInfra_4.html

excitingip.co*m/2802/data-center-network-top-of-rack-tor-vs-end-of-row-eor-design/

During an upgrade of an existing data center, a network team must design segmentation into existing networks. Due to legacy applications, the IP addresses cannot change. Which firewall deployment model meets these requirements?
A. routed mode
B. multicontext mode
C. transparent mode
D. cluster mode

I believe C: transparent mode. (transparent mode can form segmentation)

cisco.co*m/c/en/us/td/docs/security/asa/asa95/configuration/general/asa-95-general-config/intro-fw.html

ipwithease.co*m/configuring-cisco-asa-in-transparent-mode/

@ast for any TOR/EOR questions understand

bradhedlund.co*m/2009/04/05/ top-of-rack-vs-end-of-row-data-center-designs/

It explains pro and cons of each very well