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Question 1:
Why is a first-hop redundancy protocol implemented?
A. to enable multiple switches to operate as a single unit
B. to provide load-sharing for a multilink segment
C. to prevent loops in a network
D. to protect against default gateway failures
Correct Answer: D
Question 2:
Refer to the exhibit.
A Cisco engineer creates a new WLAN called lantest. Which two actions must be performed so that only high-speed 2.4-Ghz clients connect? (Choose two.)
A. Enable the Broadcast SSID option
B. Enable the Status option.
C. Set the Radio Policy option to 802 11g Only.
D. Set the Radio Policy option to 802.11a Only.
E. Set the Interface/Interface Group(G) to an interface other than guest
Correct Answer: BC
Question 3:
Refer to the exhibit.
What is occurring on this switch?
A. Frames are dropped after 16 failed transmission attempts
B. The internal transmit buffer is overloaded
C. A high number of frames smaller than 64 bytes are received
D. An excessive number of frames greater than 1518 bytes are received
Correct Answer: A
The retransmission algorithm helps to ensure that the packets do not retransmit at the same time. However, if the two devices retry at nearly the same time, packets can collide again; the process repeats until either the packets finally pass onto the network without collisions, or 16 consecutive collisions occur and the packets are discarded.
Question 4:
What describes the functionality of southbound APIs?
A. They enable communication between the controller and the network device.
B. They communicate with the management plane.
C. They use HTTP messages to communicate.
D. They convey information from the controller to the SDN applications.
Correct Answer: A
Question 5:
What is a function of an endpoint?
A. It is used directly by an individual user to access network services
B. It passes unicast communication between hosts in a network
C. It transmits broadcast traffic between devices in the same VLAN
D. It provides security between trusted and untrusted sections of the network.
Correct Answer: A
An endpoint is a remote computing device that communicates back and forth with a network to which it is connected. Examples of endpoints include: Desktops. Laptops. Smartphones.
Question 6:
What is a similarly between 1000BASE-LX and 1000BASE-T standards?
A. Both use the same data-link header and trailer formats
B. Both cable types support LP connectors
C. Both cable types support Rj-45 connectors
D. Both support up to 550 meters between nodes
Correct Answer: A
In computer networking, Gigabit Ethernet (GbE or 1 GigE) is the term applied to transmitting Ethernet frames at a rate of a gigabit per second.” Both standards use Ethernet framing (same headers and trailers)
Question 7:
Which statement identifies the functionality of virtual machines?
A. The hypervisor communicates on Layer 3 without the need for additional resources.
B. Each hypervisor can support a single virtual machine and a single software switch.
C. The hypervisor virtualizes physical components including CPU, memory, and storage.
D. Virtualized servers run most efficiently when they are physically connected to a switch that is separate from the hypervisor.
Correct Answer: C
The hypervisor virtualizes physical components including CPU, memory, and storage. The hypervisor is a software layer that sits between the physical hardware of a computer and the operating system. It virtualizes physical components such as CPU, memory, and storage, allowing for multiple operating systems to run on a single physical machine. This allows for improved scalability, flexibility, and resource utilization.
Question 8:
Which technology can prevent client devices from arbitrarily connecting to the network without state remediation?
A. 802.1x
B. IP Source Guard
C. MAC Authentication Bypass
D. 802.11n
Correct Answer: A
Question 9:
Which purpose does a northbound API serve in a controller-based networking architecture?
A. facilitates communication between the controller and the applications
B. reports device errors to a controller
C. generates statistics for network hardware and traffic
D. communicates between the controller and the physical network hardware
Correct Answer: D
The interface that enables communication between a program on the controller and a program on the networking device is typically referred to as a “southbound interface.”
Question 10:
Refer to the exhibit. An engineer assumes a configuration task from a peer. Router A must establish an OSPF neighbor relationship with neighbor 172.1.1.1. The output displays the status of the adjacency after 2 hours. What is the next step in the configuration process for the routers to establish an adjacency?
A. Configure router A to use the same MTU size as router B.
B. Configure a point-to-point link between router A and router B.
C. Set the router B OSPF ID to the same value as its IP address.
D. Set the router B OSPF ID to a nonhost address.
Correct Answer: A
Question 11:
An engineer must configure an OSPF neighbor relationship between router R1 and R3 The authentication configuration has been configured and the connecting interfaces are in the same 192.168 1.0/30 sublet. What are the next two steps to complete the configuration? (Choose two.)
A. configure the hello and dead timers to match on both sides
B. configure the same process ID for the router OSPF process
C. configure the same router ID on both routing processes
D. Configure the interfaces as OSPF active on both sides.
E. configure both interfaces with the same area ID
Correct Answer: AE
Enabling OSPF SUMMARY STEPS
1.
enable
2.
configure terminal
3.
router ospf process-id
4.
network ip-address wildcard-mask area area-id
5.
end
https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/iproute_ospf/configuration/xe-16/iro-xe-16-book/iro-cfg.html#GUID-51A06D7A-7099-453C-A9FD-34CE45080796
Question 12:
Refer to the exhibit. Which command configures OSPF on the point-to-point link between routers R1 and R2?
A. router-id 10.0.0.15
B. neighbor 10.1.2.0 cost 180
C. network 10.0.0.0 0.0.0.255 area 0
D. ip ospf priority 100
Correct Answer: C
Question 13:
Which value is the unique identifier that an access point uses to establish and maintain wireless connectivity to wireless network devices?
A. VLANID
B. SSID
C. RFID
D. WLANID
Correct Answer: B
The SSID is a unique identifier that wireless networking devices use to establish and maintain wireless connectivity. Multiple access points on a network or subnetwork may use the same SSIDs.
Question 14:
For what two purposes does the Ethernet protocol use physical addresses?
A. to uniquely identify devices at Layer 2
B. to allow communication with devices on a different network
C. to differentiate a Layer 2 frame from a Layer 3 packet
D. to establish a priority system to determine which device gets to transmit first
E. to allow communication between different devices on the same network
F. to allow detection of a remote device when its physical address is unknown
Correct Answer: AE
Transmission Control Protocol/Internet Protocol Packet Analysis … In a LAN, each node is assigned a physical address, also known as a MAC/Ethernet address. This address is unique to each of the nodes on the LAN and is 6 bytes (48 bits) long, which is burned on the Ethernet card (also known as the network interface card). Ethernet is a byte-count protocol. A node on a LAN broadcasts a frame that is heard by all other nodes; only the node whose Ethernet address matches with the DA in the Ethernet frame copies the frame into its buffer.
Question 15:
Refer to the exhibit.
An engineer is asked to confe router R1 so that it forms an OSPF single-area neighbor relationship with R2. Which command sequence must be implemented to configure the router?
A. router ospf 100 network 10.0.0.0 0.0.0.252 area0 network 10.0.1.0 0.0.0.255 area0
B. router ospf 100 network 10.0.0.0 0.0.0.3 area0 network 10.0.2.0 255.255.255.0 area0
C. router ospf 10 network 10.0.0.0 0.0.0.3 area0 network 10.0.1.0 0.0.0.255 area0
D. router ospf 10 network 10.0.0.0 0.0.0.3 area0 network 10.0.2.0 0.0.0.255 area0
Correct Answer: C
Configure route to 10.0.0.0/30 with wildcard 0.0.0.3 Confugure route to 10.0.1.0/24 with wildcard 0.0.0.255 router ospf 10 network 10.0.0.0 0.0.0.3 area0 network 10.0.1.0 0.0.0.255 area0