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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Network Assurance | 10% | - Monitoring and telemetry
|
| Topic 2: Automation and Programmability | 15% | - Controller-based networking
|
| Topic 3: Infrastructure | 30% | - Switching technologies
|
| Topic 4: Architecture | 15% | - Enterprise network design principles
|
| Topic 5: Security | 20% | - Network access control
|
| Topic 6: Virtualization | 10% | - Device virtualization
|
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問題 #91
Refer to the exhibit.
Link1 is a copper connection and Link2 is a fiber connection. The fiber port must be the primary port for all forwarding. The output of the show spanning-tree command on SW2 shows that the fiber port is blocked by spanning tree. An engineer enters the spanning- tree port-priority 32 command on GO/1 on SW2, but the port remains blocked. Which command should be entered on the ports that are connected to Link2 to resolve the issue?
答案:A
解題說明:
SW1 needs to block one of its ports to SW2 to avoid a bridging loop between the two switches.
Unfortunately, it blocked the fiber port Link2. But how does SW2 select its blocked port? Well, the answer is based on the BPDUs it receives from SW1. answer 'Enter spanning-tree port-priority 32 on SW1' BPDU is superior than another if it has:
1. answer 'Enter spanning-tree port-priority 32 on SW1' lower Root Bridge ID
2. answer 'Enter spanning-tree port-priority 32 on SW1' lower path cost to the Root
3. answer 'Enter spanning-tree port-priority 32 on SW1' lower Sending Bridge ID
4. answer 'Enter spanning-tree port-priority 32 on SW1' lower Sending Port ID These four parameters are examined in order. In this specific case, all the BPDUs sent by SW1 have the same Root Bridge ID, the same path cost to the Root and the same Sending Bridge ID.
The only parameter left to select the best one is the Sending Port ID (Port ID = port priority + port index). And the port index of Gi0/0 is lower than the port index of Gi0/1 so Link 1 has been chosen as the primary link.
Therefore we must change the port priority to change the primary link. The lower numerical value of port priority, the higher priority that port has. In other words, we must change the port-priority on Gi0/1 of SW1 (not on Gi0/1 of SW2) to a lower value than that of Gi0/0.
問題 #92
Which JSON script is properly formatted?




答案:C
解題說明:
Option A is the properly formatted JSON script. JSON (JavaScript Object Notation) is a standard text-based format for representing structured data based on JavaScript object syntax. It is commonly used for transmitting data in web applications (e.g., sending some data from the server to the client, so it can be displayed on a web page, or vice versa). The JSON syntax rules are as follows12:
* Data is in name/value pairs, separated by commas. A name/value pair consists of a field name (in double quotes), followed by a colon, followed by a value: "name": "value".
* Curly braces hold objects. An object can contain multiple name/value pairs: {"name": "value", "name":
"value", ...}.
* Square brackets hold arrays. An array can contain multiple values, separated by commas: ["value",
"value", ...].
* Values can be strings (in double quotes), numbers, booleans (true or false), null, objects, or arrays.
Option A follows these rules and is a valid JSON script. It defines an object with four name/value pairs: "name", "age", "hobbies", and "address". The value of "name" is a string, the value of "age" is a number, the value of "hobbies" is an array of strings, and the value of "address" is another object with two name/value pairs: "city" and "country". The object is enclosed in curly braces and the name/value pairs are separated by commas.
Option B is not a valid JSON script because it uses single quotes instead of double quotes for the field names and string values. JSON requires double quotes for strings12.
Option C is not a valid JSON script because it does not use commas to separate the name/value pairs. JSON requires commas to separate the data elements within an object or an array12.
Option D is not a valid JSON script because it uses a semicolon instead of a colon to separate the field name and the value. JSON requires a colon to separate the name and the value in a name/value pair12. References: 1: JSON Introduction, 2: JSON Syntax
問題 #93
Which two statements about Cisco Express Forwarding load balancing are true?
答案:C,E
解題說明:
Cisco IOS software basically supports two modes of CEF load balancing: On per-destination or per-packet basis.
For per destination load balancing a hash is computed out of the source and destination IP address (-> Answer E is correct). This hash points to exactly one of the adjacency entries in the adjacency table (-> Answer D is correct), providing that the same path is used for all packets with this source/destination address pair. If per packet load balancing is used the packets are distributed round robin over the available paths. In either case the information in the FIB and adjacency tables provide all the necessary forwarding information, just like for non-load balancing operation.
The number of paths used is limited by the number of entries the routing protocol puts in the routing table, the default in IOS is 4 entries for most IP routing protocols with the exception of BGP, where it is one entry. The maximum number that can be configured is 6 different paths -> Answer A is not correct.
問題 #94
Simulation 10
答案:
解題說明:
See the solution below.
Explanation:


問題 #95
Refer to the exhibit.
Which privilege level is assigned to VTY users?
答案:C
解題說明:
Explanation
Lines (CON, AUX, VTY) default to level 1 privileges.
問題 #96
......
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從Google Drive中免費下載最新的PDFExamDumps 350-401 PDF版考試題庫:https://drive.google.com/open?id=1-UAcVD732Rgtk25xoYT-Z5QRkkruWSiY