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質問 372
Refer to the exhibit.
Which privilege level is assigned to VTY users?
- A. 0
- B. 1
- C. 2
- D. 3
正解: C
解説:
Explanation
Lines (CON, AUX, VTY) default to level 1 privileges.
質問 373
Refer to the exhibit the EtherChannel between SW2 and SW3 is not operational which action resolves this issue?
- A. Configure the channel-group mode on SW3 Gi0/0 and Gi0/1 to active
- B. Configure the mode on SW2 Gi0/0 to trunk
- C. Configure the channel-group mode on SW2 Gi0/0 and Gi0/1 to on.
- D. Configure the mode on SW2 Gi0/1 to access
正解: B
質問 374
Drag and drop the characteristics from the left to the correct Infrastructure deployment type on the right.
正解:
解説:
Explanation
質問 375
A wireless consultant is designing a high-density wireless network for a lecture hall for 1000 students Which antenna type is recommended for this environment?
- A. parabolic dish
- B. sector antenna
- C. dipole antenna
- D. omnidirectional antenna
正解: D
解説:
Directional antennas Directional antennas come in many different styles and shapes. An antenna does not offer any added power to the signal; it simply redirects the energy it receives from the transmitter. By redirecting this energy, it has the effect of providing more energy in one direction and less energy in all other directions. As the gain of a directional antenna increases, the angle of radiation usually decreases, providing a greater coverage distance but with a reduced coverage angle. Directional antennas include patch antennas and parabolic dishes. Parabolic dishes have a very narrow RF energy path, and the installer must be accurate in aiming these types of antennas at each other.
Reference:
Omnidirectional antennas
An omnidirectional antenna is designed to provide a 360-degree radiation pattern. This type of antenna is used when coverage in all directions from the antenna is required. The standard 2.14-dBi "rubber duck" is one style of omnidirectional antenna.
Omnidirectional antenna
-> Therefore Omnidirectional antenna is best suited for a high-density wireless network in a lecture hall.
質問 376
Drag and drop the Cisco SD-Access solution areas from the left onto the protocols they use on the right.
正解:
解説:
質問 377
What is a TLOC in a Cisco SD-WAN deployment?
- A. identifier that represents a specific service offered by nodes within the Cisco SD-WAN overlay
- B. attribute that acts as a next hop for network prefixes
- C. value that identifies a specific tunnel within the Cisco SD-WAN overlay
- D. component set by the administrator to differentiate similar nodes that offer a common service
正解: D
解説:
Explanation
A TLOC is a Transport Locator that represents an attachment point where a Cisco WAN Edge device connects to a WAN transport. A TLOC is uniquely identified by a tuple of three values - (System-IP address, Color, Encapsulation).
A TLOC route consists of all required information needed by a remote peer in order to establish an overlay tunnel with that TLOC. This includes private and public IP addresses and ports, site-id, preference, weight, status, encapsulation info such as encryption and authentication parameters, and much more.
質問 378
A customer has recently implemented a new wireless infrastructure using WLC-5520 at a site directly next to a large commercial airport. Users report that they intermittently lose WI-FI connectivity, and troubleshooting reveals it is due to frequent channel changes. Which two actions fix this issue? (Choose two)
- A. Remove UNII-2 and Extended UNII-2 channels from the 5 Ghz channel list
- B. Disable DFS channels to prevent interference with Doppler radar
- C. Enable DFS channels because they are immune to radar interference.
- D. Restore the DCA default settings because this automatically avoids channel interference.
- E. Configure channels on the UNIk2 and the Extended UNII-2 sub-bands of the 5 Ghz band only
正解: A,B
質問 379
Refer to the exhibit.
The traceroute fails from R1 to R3. What is the cause of the failure?
- A. An ACL applied Inbound on fa0/1 of R3 is dropping the traffic.
- B. Redistribution of connected routes into OSPF is not configured.
- C. The loopback on R3 Is in a shutdown stale.
- D. An ACL applied Inbound on loopback0 of R2 Is dropping the traffic.
正解: A
解説:
We see in the traceroute result the packet could reach 10.99.69.5 (on R2) but it could not go any further so we can deduce an ACL on R3 was blocking it.
Note: Record option displays the address(es) of the hops (up to nine) the packet goes through.
質問 380
Which three methods does Cisco DNA Center use to discover devices? (Choose three.)
- A. LLDP
- B. Ping
- C. CDP
- D. NETCONF
- E. specified range of IP addresses
- F. SNMP
正解: A,C,E
解説:
Cisco DNA Center supports three methods for discovery: LLDP, CDP (Cisco Discovery Protocol) and IP Range.
https://www.ciscolive.com/c/dam/r/ciscolive/emea/docs/2019/pdf/LTRNMS-2500-LG.pdf
質問 381
Which threat defence mechanism, when deployed at the network perimeter, protects against zero-day attacks?
- A. stateful inspection
- B. SSL decryption
- C. sandbox
- D. intrusion prevention
正解: C
解説:
Reference: https://www.cisco.com/c/en/us/products/collateral/security/amp-appliances/datasheet-c78-733182.html "File analysis and sandboxing: Secure Malware Analytics' highly secure environment helps you execute, analyze, and test malware behavior to discover previously unknown ZERO-DAY threats. The integration of Secure Malware Analytics' sandboxing technology into Malware Defense results in more dynamic analysis checked against a larger set of behavioral indicators. "
質問 382
A customer requests a network design that supports these requirements:
* FHRP redundancy
* multivendor router environment
* IPv4 and IPv6 hosts
Which protocol does the design include?
- A. VRRP version 3
- B. VRRP version 2
- C. HSRP version 2
- D. GLBP
正解: C
質問 383
An engineer must configure a new loopback Interface on a router and advertise the interface as a fa4 in OSPF. Which command set accomplishes this task?
A)
B)
C)
D)
- A. Option A
- B. Option C
- C. Option B
- D. Option D
正解: A
解説:
Step 1. Create the loopback interface using the interface loopback number global configuration command.
Step 2. Add a description. Although optional, it is a necessary component for documenting a network.
Step 3. Configure the IP address.
For example, the following commands configure a loopback interface of the R1 router shown in (shown earlier in the chapter):
R1# configure terminal
R1(config)# interface loopback 0
R1(config-if)# ip address 10.0.0.1 255.255.255.0
R1(config-if)# exit
R1(config)#
質問 384
Which action is the vSmart controller responsible for in an SD-WAN deployment?
- A. distribute security information for tunnel establishment between vEdge routers
- B. gather telemetry data from vEdge routers
- C. manage, maintain, and gather configuration and status for nodes within the SD-WAN fabric
- D. onboard vEdge nodes into the SD-WAN fabric
正解: A
解説:
+ Orchestration plane (vBond) assists in securely onboarding the SD-WAN WAN Edge routers into the SD-WAN overlay (-> Therefore answer "onboard vEdge nodes into the SD-WAN fabric" mentioned about vBond). The vBond controller, or orchestrator, authenticates and authorizes the SD-WAN components onto the network. The vBond orchestrator takes an added responsibility to distribute the list of vSmart and vManage controller information to the WAN Edge routers. vBond is the only device in SD-WAN that requires a public IP address as it is the first point of contact and authentication for all SD-WAN components to join the SD-WAN fabric. All other components need to know the vBond IP or DNS information.
+ Management plane (vManage) is responsible for central configuration and monitoring. The vManage controller is the centralized network management system that provides a single pane of glass GUI interface to easily deploy, configure, monitor and troubleshoot all Cisco SD-WAN components in the network. (-> Answer "manage, maintain, and gather configuration and status for nodes within the SD-WAN fabric" and answer "gather telemetry data from vEdge routers" are about vManage)
+ Control plane (vSmart) builds and maintains the network topology and make decisions on the traffic flows. The vSmart controller disseminates control plane information between WAN Edge devices, implements control plane policies and distributes data plane policies to network devices for enforcement (-> Answer "distribute security information for tunnel establishment between vEdge routers" is about vSmart)
質問 385
Drag and drop the REST API authentication method from the left to the description on the right.
正解:
解説:
Explanation
質問 386
Refer to the exhibit.
Which JSON syntax is derived from this data?
- A. Option C
- B. Option A
- C. Option B
- D. Option D
正解: D
質問 387
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