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NEW QUESTION: 1
Which technology enhances the performance of the Huawei OceanStor 9000 application? (Multiple choice.)
A. When a hard drive has multiple objects at the same time to write requests, support merged into a large continuous IO, significantly improve system performance.
B. Support for SMB3 multichannel features that take full advantage of client-side multi-core CPUs and bandwidth resources to dramatically improve performance.
C. Internal file system replication, without having to go through the client directly in the system to complete high-speed
D. Supports 10GE and PCIE networking, providing high performance through high-speed inter-node interconnection and reducing system internal delay.
Answer: A,B,C
NEW QUESTION: 2
A. N5K-A(config)# ip access-list 101 N5K-A(config-acl)# deny tcp any host 172.16.1.0/21 eq 8080
B. N5K-A(config)# ip access-list 101 N5K-A(config-acl)# deny tcp 172.16.1.0 0.0.7.255 any eq 8080 N5K-A(config-acl)# permit ip any any
C. N5K-A(config)#access-list 101 deny tcp172.16.1.0 0.0.15.255 eq 8080
D. N5K-A(config)# ip access-list 101 N5K-A(config-acl)# deny tcp any 172.16.1.0 255.255.248.0 eq 8080 N5K-A(config-acl)# permit ip any any
Answer: B
NEW QUESTION: 3
View the Exhibit.
Which of the following designs is represented by the diagram shown above?
A. loop-free inverted U access design
B. looped square access design
C. Layer 3 access design
D. loop-free U access design
E. looped triangle access design
Answer: B
Explanation:
Explanation/Reference:
Section: Enterprise Network Design Explanation
Explanation:
The topology diagram in this scenario represents the looped square access design. The looped square access design and the looped triangle access design are Layer 2, looped access designs. Both of these designs use Layer 2 trunk links between aggregation layer switches and rely on Spanning Tree Protocol (STP) to resolve physical loops in the network. In the looped square access design, each access layer switch has a single uplink to the aggregation layer. Additionally, access layer switches also share a Layer
2 link between them that remains in a blocking state until an uplink to the aggregation layer fails. In the event of an uplink failure, the shared link provides a redundant path for access layer traffic to the aggregation layer. The Layer 2 topology of a looped square access design resembles a square, as shown by the black, dotted lines in the diagram below:
By contrast, the access layer switches in the looped triangle access design do not share a Layer 2 trunk link. Additionally, each access layer switch in this design has two uplinks to the aggregation layer. These uplinks form a Layer 2 looped triangle, as shown by the black, dotted lines in the diagram below:
Because the uplinks in a looped triangle access design form a Layer 2 loop, one of the uplinks must remain in a blocking state until the active uplink fails. The blocking uplink provides a redundant path for access layer traffic in the event of a failure of the active uplink. The looped triangle access design is the most commonly implemented design in data centers today.
The topology diagram in this scenario does not represent the loop-free U access design. A loop-free design is a design that contains no Layer 2 loops between the access layer and the aggregation layer.
Because there are no Layer 2 loops in a loop-free design, STP blocking is not in effect for any of the uplinks between access layer and aggregation layer switches. In the loop-free U access design, the Layer
2 topology resembles the letter U, as indicated by the dotted, black lines in the diagram below:
Each access layer switch in this design provides a single Layer 2 uplink to the aggregation layer and shares a Layer 2 link to an adjacent access layer switch. The shared link is typically an 802.1Q trunk link and enables each access layer switch to share virtual LAN (VLAN) information. Additionally, the trunk link provides a redundant path for access layer traffic if an uplink to the aggregation layer fails. The link between the aggregation layer switches in this design is a Layer 3 link. Because this link is not a Layer 2 link, services that rely on Layer 2 adjacency for state awareness, such as Hot Standby Router Protocol (HSRP), are not supported.
The topology diagram in this scenario does not represent the loop-free inverted U access design. Like the loop-free U access design, the loop-free inverted U access design contains no Layer 2 loops between the access layer and the aggregation layer. However, unlike the loop-free U access design, the loop-free inverted U access design does not contain Layer 2 trunk links between access layer switches. Instead, the aggregation layer switches are interconnected by Layer 2 trunk links. These Layer 2 trunk links enable access layer VLANs to span the aggregation layer and also to serve as redundant paths for access layer traffic in the event of an access layer uplink failure. However, because the access layer switches are not interconnected by Layer 2 trunk links, single-attached devices at the access layer can be cut off from the network if their access layer switch suffers an uplink failure. The Layer 2 topology of a loop-free inverted U access design resembles an inverted U, as indicated by the dotted, black lines in the diagram below:
The topology diagram in this scenario does not represent the Layer 3 access design. In the Layer 3 access design, the uplinks between the access layer and aggregation layer switches are Layer 3 connections.
Because the Layer 2 topology in this design is effectively reduced to the trunk link between the access layer switches, Layer 2 loops are eliminated and all uplinks are in a forwarding state. STP is no longer necessary in this design; however, Cisco recommends configuring STP on ports that connect to access layer devices to prevent user side loops from entering the network. The Layer 3 uplinks in this design enable the access layer switches to use routing information to implement load balancing across all available uplinks. It is important to consider the performance limitations and capabilities of the access layer and aggregation layer switches when implementing a routing solution in the Layer 3 access design. If performance is an issue, static routes and stub routing can reduce processing load for the access layer and aggregation layer switches while route summarization can reduce processing load for core switches.
The Layer 3 access design is represented by the diagram below:
Reference:
CCDA 200-310 Official Cert Guide, Chapter 3, Access Layer Best Practices, pp. 94-97 Cisco: Data Center Multi-Tier Model Design: Data Center Access Layer
NEW QUESTION: 4
Which statement about the Ethernet clock synchronization technology used in actual solutions is true?
A. The NTP technology requires the intermediate node to support transparent clock transmission.
B. The IEEE1588 technology requires the intermediate node to support transparent clock transmission.
C. The 802.1as technology requires the intermediate node to support transparent clock transmission.
D. The CES packet recovery technology requires the intermediate node to support transparent clock transmission.
Answer: C
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