Which two WAN architecture options help a business scalability and reliability for the network? (Choose two.)
Which two WAN architecture options help a business scalability and reliability for the network? (Choose two.)
Dual-homed branches involve connecting each branch office to two different routers or network connections, which provides redundancy in case of a network failure, thereby increasing reliability and availability. Dynamic routing protocols enable routers to automatically adjust to changes in the network by exchanging information about network topology changes, allowing for improved scalability and reliability as the network can dynamically find the most efficient paths and adjust to topology changes automatically.
Should be C and E for me. Dynanic routing serves scalability as compared to static routing.
Agree here too e provides and defines scalability in this scenario.
A. Asynchronous routing is not a standard term in networking. It might be a confusion with asynchronous transfer mode (ATM) or other concepts, but it does not directly relate to WAN architecture options that improve scalability and reliability.
A. Asynchronous routing is not a standard term in networking. It might be a confusion with asynchronous transfer mode (ATM) or other concepts, but it does not directly relate to WAN architecture options that improve scalability and reliability.
C and E for me too..who the hell come up with those questions
However, I guess in the real exam, A and C will count for correct..
C&E are correct C. Dual-homed branches: This architecture involves connecting each branch office to two different routers or switches, allowing for redundancy in case of a network failure. This design ensures that if one of the network connections fails, the other can take over without any disruption, providing high availability and improved network reliability. E. Dynamic routing: Dynamic routing is a type of routing protocol that allows routers to dynamically exchange information about network topology changes. This capability enables routers to adapt to network changes automatically and select the most efficient path for data transmission. Dynamic routing ensures network scalability, as new routers or network segments can be added without manual intervention, and it also improves network reliability by automatically rerouting traffic in the event of a network outage.
The two WAN architecture options that help a business scalability and reliability for the network are: C. Dual-homed branches: Dual-homing involves connecting each branch office to two or more different WAN links, such as two different service providers, in order to provide redundancy and increase reliability. This architecture option enables the business to maintain network connectivity even if one of the WAN links fails. In addition, it can also provide better performance and scalability by balancing traffic across the multiple links. E. Dynamic routing: Dynamic routing protocols enable routers to dynamically exchange information about the network topology and find the best path for data to travel. This allows for faster convergence in case of network changes and improves network scalability by automatically adjusting to changes in the network. Dynamic routing protocols also increase network reliability by providing redundancy and failover mechanisms.
The asymmetric routing support with other new features can be leveraged for having greater scalability and redundancy for traffic passing through the firewall infrastructure. as mentioned in https://www.cisco.com/web/services/news/ts_newsletter/tech/chalktalk/archives/200903.html going with A and C
Answer AC but it's a badly worded question - I think it has to be Asymmetric not Asynchronous when dealing with ASA firewall device scenarios you'll always read about benefits in design from asymmetric routing support having greater scalability and redundancy for traffic passing through the firewall infrastructure blah blah
A & C , will be my flags I would say answer A should be worded as Asymmetric.
Has to be C - Dual homed for redundancy and E - Dynamic routing for scalability factor.
WAN technologies are very difficult to assign dynamic routing so A,C are correct answers
C&E are correct
Just because google suggests Asymmetric when you search asychronous routing doesn't mean the words have the same meaning... That issue aside dynamic routing is a must for scalability and and dual homed would be for redundancy
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How does asynchronous routing provide redundancy or scalability? Suppose you have device 1 and device 2 with 2 segments, A and B, you conduct asynchronous routing on these 2 such that traffic comes in on A and leaves on B, now if either A or B goes out your network is cooked.
A and C are correct because it's asking for 2 WAN architecture
Question: Which two WAN architecture options help a business scalability and reliability for the network? Keyword: Reliability Here is some reading to consider for Asynchronous routing Issues to Consider with Asymmetric Routing Asymmetric routing is not a problem by itself, but will cause problems when Network Address Translation (NAT) or firewalls are used in the routed path. For example, in firewalls, state information is built when the packets flow from a higher security domain to a lower security domain. The firewall will be an exit point from one security domain to the other. If the return path passes through another firewall, the packet will not be allowed to traverse the firewall from the lower to higher security domain because the firewall in the return path will not have any state information. The state information exists in the first firewall. Ref: https://www.cisco.com/web/services/news/ts_newsletter/tech/chalktalk/archives/200903.html
I am guessing this answer; but I do not think dynamic routing is not an architecture
A is not correct A. asynchronous routing isn't a standard term related to WAN architecture. You might be thinking of "asymmetric routing," where packets between two points might take different paths for the outbound and return traffic. While this can happen in complex networks, it's not specifically a method for improving scalability and reliability.
Cannot agree.
This page from Cisco mentioned the Asymmetric Routing and it seems to provide some sort of high availability. https://www.cisco.com/c/en/us/td/docs/nsite/enterprise/wan/wan_optimization/wan_opt_sg/chap09.html
your link states, "asymmetric routing results in suboptimal TCP performance..." and continues. 'Tis bad.
ANSWER C AND E ARE RIGHT
I did a little digging. The term is indeed supposed to be Asymmetric Routing. After reading a little into it, I feel more confident with A & C being the correct responses. Here's a little bit about it. It does involve redundancy which is what we want with this question.
Then where is scalability covered
C(reliability) and E(Scalability) Asynchronous / Asymmetric routing has nothing to do with Reliability and Scalability.
The answer is C and E. Before the emergency of GRE and When WAN was using IPSec the main problem was its inability not being able to support multicast address for routing protocol to work. This leads to labor intensive manual configuration of IPSec tunnel. So they came up with GRE to make it support dynamic routing intern improving the scalability of WAN links. I don't think anyone has a problem with the answer Dual homed for reliability
A & C is the correct answer, you guys can google it
According to Google
Asynchronous routing is not *reliable* according to the keyword of the questions here. The wording almost got me too. Comparing the definitions with each other can provide more clarity. @HMaw posted the def. above.
Based on scalability you need dynamic not static its too much work. Dual-homed is necessery for relaibilty. So C&E sounds more accurate for these rules.
C and A for me. How can dynamic routing not provide reliability. Where as what is even asynchronous routing? Google doesn't seem to know. I guess traffic travelling back over a different path to what it was sent which sounds unreliable.
Sorry C and E
A and E for me: In asymmetric routing, packets that belong to a single TCP or UDP connection are forwarded through one interface in a redundancy group (RG), but returned through another interface in the same RG. https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/ipaddr_nat/configuration/xe-3s/nat-xe-3s-book/sec-data-asym-route.pdf
Agree with C & E answers. Asymmetric Routing (AR) means going out one path & returning via another. Most firewalls do not even accept allow (will block) AR for security reason. Furthermore, AR will require two paths to be available to begin with, if a route is down, Dynamic routing will help and AR is useless!!!
Dude, it is dual-homed "branches", not just dual-homed. Go check this key word: Cisco WAN and Application Optimization Solution Guide. Refer to the diagram inside it, you will know what is "branch" mean.
C for reliability e E for scalability
C for reliability and E for scalability
I guess c&e
Should be A and C
I think A and C are corresc answers. In WAN architecture with dual-homed branches it is not problem and it can even increased network capacity and improved load balancing
C and E
I think A&C is correct. But "Asynchrnous routing" is the wrong term. I think they mean something like Asynchronous Transfer mode. So you can split your traffic via 2 lines, maybe Frame Relay and Internet.
why is anyone chosing 'A" changing the answer from asychronous to asymmetric? Asynchronous Routing Protocols: Also known as distance vector routing protocols. Exchange routing information periodically at set intervals, regardless of whether there are changes in the network topology. Use simple metrics like hop count to determine the best path to a destination. Examples include RIPv1, RIPv2, IGRP, and EIGRP (which has characteristics of both distance vector and link-state protocols). Dynamic Routing Protocols: Also known as link-state routing protocols. Exchange routing information immediately or in response to changes in the network topology. Use more complex metrics (e.g., bandwidth, delay, cost) and detailed network topology information to calculate optimal paths. Typically have faster convergence times and better scalability than asynchronous protocols. Examples include OSPF, IS-IS (Intermediate System-to-Intermediate System), and BGP.