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Cisco 350-401 Exam Syllabus Topics:

Section	Weight	Objectives
Topic 1: Virtualization	10%	- Device virtualization 1. VDC, VRF, virtual switching - Path isolation and segmentation - Network function virtualization (NFV)
Topic 2: Infrastructure	30%	- Quality of Service (QoS) - IP services 1. DHCP, DNS, NAT, NTP, SLA, IP SLA - Layer 2 technologies 1. VLAN, trunking, EtherChannel, STP/RSTP/MSTP - Layer 3 routing protocols 1. EIGRP, OSPF, BGP, route redistribution
Topic 3: Architecture	15%	- Wireless architecture - Dual-stack IPv4/IPv6 design - Enterprise network design principles 1. 2-tier, 3-tier, fabric, cloud architectures 2. SD-Access and SD-WAN concepts
Topic 4: Security	20%	- Secure network design - Infrastructure security 1. AAA, ACLs, CoPP, control plane security - Secure access and segmentation 1. 802.1X, MACsec, segmentation, firewall integration - Wireless security 1. WPA2/WPA3, authentication methods
Topic 5: Automation	15%	- Model-driven programmability - Programmability concepts 1. REST API, JSON, XML, YANG - Automation tools 1. Ansible, Python scripts, Cisco DNA Center APIs
Topic 6: Network Assurance	10%	- Troubleshooting tools and methodologies - Performance and fault management - Monitoring and logging 1. Syslog, SNMP, NetFlow, IPFIX

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TOP 350-401 Reliable Real Exam - Cisco Implementing Cisco Enterprise Network Core Technologies (350-401 ENCOR) - High-quality 350-401 Exam Topic

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Cisco Implementing Cisco Enterprise Network Core Technologies (350-401 ENCOR) Sample Questions (Q187-Q192):

NEW QUESTION # 187
Which two statements about single-hub DMVPN are true? (Choose two.)

A. DMVPN networks support GRE tunnel keepalives on multipoint GRE tunnels.
B. Dynamic spoke-to-spoke tunnel connections support IKE certificates for ISAKMP authentication.
C. Each DMVPN spoke requires a unique IP address after NAT translation.
D. Cisco best practices recommend that dynamic spoke-to-spoke tunnel connections use wildcard preshared keys for ISAKMP authentication
E. DMVPN networks support GRE tunnel keepalives on point-to-point GRE tunnels.
F. Two spokes that are behind different NAT devices that both use PAT can establish a spoke-to-spoke connection.

Answer: A,B

NEW QUESTION # 188
Which configuration restricts the amount of SSH that a router accepts 100 kbps?

Answer: D

Explanation:
The correct configuration to restrict the amount of SSH traffic that a router accepts to 100 kbps involves creating a policy map that specifies the maximum bandwidth for the class of traffic. This is done by defining a class map to match the SSH traffic, then creating a policy map that uses the police command to set the rate limit. The policy map is then applied to the control plane to enforce the limit on SSH traffic.
References: The information is based on the Implementing and Operating Cisco Service Provider Network Core Technologies (SPCOR) source book CoPP protects the route processor on network devices by treating route processor resources as a separate entity with its own ingress interface (and in some implementations, egress also). CoPP is used to police traffic that is destined to the route processor of the router such as:
+ routing protocols like OSPF, EIGRP, or BGP.
+ Gateway redundancy protocols like HSRP, VRRP, or GLBP.
+ Network management protocols like telnet, SSH, SNMP, or RADIUS.

Therefore we must apply the CoPP to deal with SSH because it is in the
management plane. CoPP must be put under "control-plane" command.

NEW QUESTION # 189
Which action reduces sticky clients in dense RF environments?

A. Increase radio channel widths to 160 MHz.
B. Increase the mandatory minimum data rates.
C. Decrease radio channel widths to 40 MHz.
D. Decrease the mandatory minimum data rates.

Answer: B

NEW QUESTION # 190
An engineer measures the Wi-Fi coverage at a customer site. The RSSI values are recorded as follows:

Which two statements does the engineer use to explain these values to the customer? (Choose two)

A. The RF signal strength at location B is 50% weaker than location A
B. The signal strength at location B is 10 dB better than location C
C. The signal strength at location C is too weak to support web surfing
D. Location D has the strongest RF signal strength
E. The RF signal strength at location C is 10 times stronger than location B

Answer: C,E

Explanation:
Understanding Signal Strength
The most accurate way to express it is with milliwatts (mW), but you end up with tons of decimal places due to WiFi's super-low transmit power, making it difficult to read. For example, -40 dBm is 0.0001 mW, and the zeros just get more intense the more the signal strength drops.
Ultimately, the easiest and most consistent way to express signal strength is with dBm, which stands for decibels relative to a milliwatt.
You can convert between mW and dBm using the following formulas:
P(dBm) = 10 * log10(P(mW))
For example, a power of 2.5 mW in dBm is:
dBm = 10log2.5 = 3.979
dBm is that we're working in negatives. -30 is a higher (stronger) signal than -80.
Signal Strength
Rating
Required for
-30 dBm
Amazing
Max achievable signal strength. The client can only be a few feet from the AP to achieve this. Not typical or desirable in the real world.
N/A
-67 dBm
Very Good
Minimum signal strength for applications that require very reliable, timely delivery of data packets.
VoIP/VoWiFi, streaming video
-70 dBm
Okay
Minimum signal strength for reliable packet delivery.
Email, web
-80 dBm
Not Good
Minimum signal strength for basic connectivity. Packet delivery may be unreliable.
N/A
-90 dBm
Unusable
Approaching or drowning in the noise floor. Any functionality is highly unlikely.
N/A
3 dB of gain = +3 dB = doubles signal strength (Let's say, the base is P.
So 10*log10(P/P)= 0 dB and 10*log10(2P/P) = 10*log10(2) = 3dB -> double signal)
3 dB of loss = -3 dB = halves signal strength strength (10*log(1/2) = -3.0103)
10 dB of loss = -10 dB = 10 times less signal strength (0.1 mW = -10 dBm, 0.01 mW = -20 dBm, etc.)
10 dB of gain = +10 dB = 10 times more signal strength (0.00001 mW = -50 dBm, 0.0001 mW = -40 dBm, etc.) Reference:
Simple rule of thumb:
When working with power, 3 dB means double (twice) the factor and 10 dB means 10-fold.

NEW QUESTION # 191
Drag and drop the characteristics from the left onto the routing protocols they describe on the right.

Answer:

Explanation:

Explanation

EIGRP maintains alternative loop-free backup via the feasible successors. To qualify as a feasible successor, a router must have an Advertised Distance (AD) less than the Feasible distance (FD) of the current successor route.
Advertised distance (AD): the cost from the neighbor to the destination. Feasible distance (FD): The sum of the AD plus the cost between the local router and the next-hop router

NEW QUESTION # 192
......

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