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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Troubleshooting and Maintenance | 10% | - Basic troubleshooting methodology
|
| Topic 2: Describe Network Fundamentals | 15% | - OSI model and TCP/IP fundamentals
|
| Topic 3: Describe Network Security Fundamentals | 15% | - Basic security concepts
|
| Topic 4: Describe Wireless Networking Fundamentals | 20% | - Wireless LAN concepts
|
| Topic 5: Describe Aruba Management Solutions | 15% | - Network management platforms
|
| Topic 6: Describe Aruba Switching Solutions | 25% | - Aruba CX switching features
|
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NEW QUESTION # 31
What does WPA3-Personal use as the source to generate a different Pairwise Master Key (PMK) each time a station connects to the wireless network?
Answer: A
Explanation:
WPA3-Personal uses SAE (Simultaneous Authentication of Equals), which performs a secure key exchange and generates a fresh Pairwise Master Key for each session.
NEW QUESTION # 32
Which authentication does Aruba's Captive Portal use?
Answer: A
Explanation:
Aruba's Captive Portal uses Layer 3 authentication, which means that it intercepts the client's HTTP requests and redirects them to a web page where the client can enter their credentials. The credentials are then verified by a RADIUS server or a local database before granting network access. Reference: https://www.arubanetworks.com/techdocs/Instant_86_WebHelp/Content/instant-ug/captive-portal/captive-portal-auth.htm Aruba's Captive Portal primarily uses Layer 3 authentication, which operates at the network layer. When a user connects to a network with a Captive Portal, they are redirected to a web page for authentication. This process involves the user entering credentials or accepting terms and conditions through a web interface before gaining full access to the network. The Captive Portal intercepts the user's web traffic at Layer 3, requiring them to authenticate before proceeding, which is why it's considered a form of Layer 3 authentication.
NEW QUESTION # 33
DRAG DROP
Match the Open Systems Interconnection (OSI) layer with its comparable member of the TCP/IP stack.
(Options may be used more than once.)
Answer:
Explanation:
NEW QUESTION # 34
Which flew in a Layer 3 IPv4 packet header is used to mitigate Layer 3 route loops?
Answer: D
Explanation:
The field in a Layer 3 IPv4 packet header that is used to mitigate Layer 3 route loops is Time To Live (TTL).
TTL is an 8-bit field that indicates the maximum number of hops that a packet can traverse before being discarded. TTL is set by the source device and decremented by one by each router that forwards the packet. If TTL reaches zero, the packet is dropped and an ICMP Internet Control Message Protocol (ICMP) Internet Control Message Protocol (ICMP) is a network protocol that provides error reporting and diagnostic functions for IP networks. ICMP is used to send messages such as echo requests and replies (ping), destination unreachable, time exceeded, parameter problem, source quench, redirect, etc. ICMP messages are encapsulated in IP datagrams and have a specific format that contains fields such as type, code, checksum, identifier, sequence number, data, etc. ICMP messages can be verified by using commands such as ping , traceroute , debug ip icmp , etc . message is sent back to the source device. TTL is used to mitigate Layer 3 route loops because it prevents packets from circulating indefinitely in a looped network topology. TTL also helps to conserve network resources and avoid congestion caused by looped packets.
The other options are not fields in a Layer 3 IPv4 packet header because:
* Checksum: Checksum is a 16-bit field that is used to verify the integrity of the IP header. Checksum is calculated by the source device and verified by the destination device based on the values of all fields in the IP header. Checksum does not mitigate Layer 3 route loops because it does not limit the number of hops that a packet can traverse.
* Protocol: Protocol is an 8-bit field that indicates the type of payload carried by the IP datagram.
Protocol identifies the upper-layer protocol that uses IP for datatransmission, such as TCP Transmission Control Protocol (TCP) Transmission Control Protocol (TCP) is a connection-oriented transport layer protocol that provides reliable, ordered, and error-checked delivery of data between applications on different devices . TCP uses a three-way handshake to establish a connection between two endpoints , and uses sequence numbers , acknowledgments , and windowing to ensure data delivery and flow control . TCP also uses mechanisms such as retransmission , congestion avoidance , and fast recovery to handle packet loss and congestion . TCP segments data into smaller units called segments , which are encapsulated in IP datagrams and have a specific format that contains fields such as source port , destination port , sequence number , acknowledgment number , header length , flags , window size , checksum , urgent pointer , options , data , etc . TCP segments can be verified by using commands such as telnet , ftp , ssh , debug ip tcp transactions , etc . , UDP User Datagram Protocol (UDP) User Datagram Protocol (UDP) is a connectionless transport layer protocol that provides
NEW QUESTION # 35
A network technician is testing a new SSID for a branch office. They are able to connect, get an IP address, and resolve DNS names. However, they are not able to browse the internet.
On the existing SSID at the branch, connectivity to the internet works as expected on the same VLAN as the new SSID. The wireless client should have received a new role to allow internet access.
What should the network technician verify to ensure both SSIDs function in a similar way?
Answer: D
Explanation:
When a network technician encounters an issue where a new SSID does not allow internet access despite successful connectivity and DNS resolution, they should verify the firewall policies associated with the new SSID. The firewall policies must include rules that permit traffic to and from the internet and should be correctly ordered to ensure that they are applied as intended.
Since the existing SSID functions correctly, comparing the firewall rules between the two can be a useful method of troubleshooting.
NEW QUESTION # 36
......
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