Free Cisco 350-701 Practice Exam with Questions & Answers | Set: 16

DHCP snooping requires both global activation and activation for the VLANs that must be protected. Because the global feature and the trusted uplink are already configured, ip dhcp snooping vlan 2 is the remaining command that enables inspection specifically on VLAN 2. Once active, server-originated DHCP messages received on untrusted access ports are rejected, while responses arriving on the trusted server-facing uplink are permitted and used to build the snooping binding database. Trust is configured in interface configuration mode with ip dhcp snooping trust; the proposed VLAN-qualified trust syntax is not valid. DHCP relay-information trust concerns Option 82 handling, and the information-option command controls insertion of relay-agent information rather than selecting the protected VLAN. Therefore, option D enables DHCP snooping on VLAN 2. Cisco Catalyst DHCP snooping configuration guidance

Explanation

Explanation

… we will showcase Cisco Threat Intelligence Director (CTID) an exciting feature on Cisco’s Firepower

Management Center (FMC) product offering that automates the operationalization of threat intelligence. TID has the ability to consume threat intelligence via STIX over TAXII and allows uploads/downloads of STIX and simple blacklists. Reference: https://blogs.cisco.com/developer/automate-threat-intelligence-using-cisco-threat-intelligencedirector

MAB is a fallback mechanism for IEEE 802.1X that allows network access based on the MAC address of the endpoint. However, MAB does not prevent MAC address spoofing, which is a technique used by attackers to impersonate authorized devices and bypass authentication. To mitigate this risk, two catalyst switch security features can be used in conjunction with MAB: 802.1AE MacSec and port security.

802.1AE MacSec is a standard that provides encryption and integrity protection for data frames between two MACsec-capable devices. MacSec also uses a secure key exchange protocol called MKA (MACsec Key Agreement) to establish and maintain cryptographic keys between the peers. By enabling MacSec on the switch ports, the switch can verify the identity and authenticity of the endpoints and prevent unauthorized access or tampering with the data frames.

Port security is a feature that allows the switch to limit the number and type of MAC addresses that can access a port. Port security can be configured to allow only a specific MAC address or a maximum number of MAC addresses per port. Port security can also be configured to take an action when a violation occurs, such as shutting down the port, sending a trap, or dropping packets. By enabling port security on the switch ports, the switch can prevent multiple devices from accessing the same port or deny access to devices with spoofed MAC addresses.

Explanation

Cisco Cloudlock is a cloud-native cloud access security broker (CASB) that helps you move to the cloud safely.

It protects your cloud users, data, and apps. Cisco Cloudlock provides visibility and compliance checks,

protects data against misuse and exfiltration, and provides threat protections against malware like ransomware.

Cisco ISE is the security solution that is used for posture assessment of the endpoints in a BYOD solution. Posture assessment allows Cisco ISE to inspect the security health of the endpoints, such as their operating system, software applications, network settings, and security software. Cisco ISE can then enforce posture policies based on the compliance status of the endpoints and grant or deny them access to the network resources. Cisco ISE supports different types of posture agents, such as AnyConnect, AnyConnect Stealth, and Temporal Agent, to monitor and remediate the endpoints. Cisco ISE also supports agentless posture for devices that cannot run an agent, such as printers, cameras, and IoT devices. Cisco ISE integrates with various third-party vendors to provide posture assessment for different endpoint platforms, such as Windows, Mac, Linux, Android, and iOS. References :=

Some possible references are:

Cisco Identity Services Engine Administrator Guide, Release 3.0 - Compliance

Chapter 15. Device Posture Assessment - Cisco ISE for BYOD and Secure Unified Access

Implementing and Operating Cisco Security Core Technologies (SCOR) v1.0

Explanation

Explanation

You can also monitor on-premises networks in your organizations using Cisco Stealthwatch Cloud. In order to do so, you need to deploy at least one Cisco Stealthwatch Cloud Sensor appliance (virtual or physical appliance).

 The Python script of the Cisco DNA Center API in the exhibit uses the requests module to send a GET request to the /dna/intent/api/v1/network-device endpoint, which returns a list of network devices managed by Cisco DNA Center. The script also uses HTTPBasicAuth to provide the username and password for authentication. The script then parses the JSON response and prints the hostname, type, management IP address, and software version of each device in a table format using the prettytable module. Therefore, the result of this script is to receive information about a switch or switches from Cisco DNA Center. References:

Python Scripting APIs in Cisco DNA Center Let You Improve Effectiveness, Topic: Network device’s script, simple and easy to create

Intro to Cisco DNA Center REST API with Python, Module 2: Using Python to Retrieve a Network Device List

Cisco DNA Center API Call Python Script Example, Topic: Cisco DNA CENTER SANDBOX Call DNA Center API Call Python Script Example

FlexVPN and DMVPN are both Cisco technologies that use point-to-point GRE tunnels to create dynamic VPN networks. However, they differ in some aspects, such as:

FlexVPN is a newer solution that requires newer hardware and IOS versions, while DMVPN is more widely supported on older devices1.

FlexVPN is based on IKEv2, which is a more robust and efficient protocol than IKEv1, which is used by DMVPN (although DMVPN can also use IKEv2)2.

FlexVPN uses static or virtual access interfaces for GRE tunnels, while DMVPN uses a single multipoint GRE interface. This allows more flexibility and visibility for FlexVPN tunnels2.

FlexVPN does not require NHRP registration for spokes to communicate with the hub, while DMVPN does. This simplifies the configuration and reduces the overhead of NHRP3.

FlexVPN has only one standard mode of operation, while DMVPN has three phases with different characteristics and configurations2.

References := 1: what is the difference between dmvpn and flexvpn 2: Cisco FlexVPN DMVPN, Part 1 - Overview and Design 3: DMVPN to FlexVPN Soft Migration Configuration Example

Configuring the IEEE 802.1X Flexible Authentication feature to support Layer 3 authentication mechanisms involves adding MAC Authentication Bypass (MAB) into the switch configuration. This allows devices that do not support 802.1X to be authenticated using their MAC address. Once MAB identifies the device, it can then be redirected to a Layer 3 device for further authentication, thus providing a mechanism to support devices requiring Layer 3 authentication methods.

Cisco Identity Services Engine (ISE) is a product that provides comprehensive and scalable access policy enforcement for wired and wireless networks. ISE supports TACACS+ for device administration, which allows for granular control over the commands and actions that network administrators can perform on network devices. ISE also supports 802.1X, MAB, and WebAuth for network access, which enables authentication and authorization of users and endpoints based on various attributes, such as identity, device type, posture, location, and time. ISE can also integrate with other Cisco security products, such as Cisco Stealthwatch and Cisco AMP for Endpoints, to provide enhanced visibility and threat detection. Therefore, ISE is the product that meets all of the requirements stated in the question. References :=

Some possible references are:

Implementing and Operating Cisco Security Core Technologies (SCOR) v1.0, Module 4: Secure Network Access, Identity Management, and Secure Access

TACACS+ Configuration Guide, Configuring TACACS

Cisco Identity Services Engine Administrator Guide, Release 2.7, Device Administration

Cisco Identity Services Engine Administrator Guide, Release 2.7, Network Access Devices

Cisco Identity Services Engine Administrator Guide, Release 2.7, Policy Sets

Explanation

SQL injection usually occurs when you ask a user for input, like their username/userid, but the user gives

(“injects”) you an SQL statement that you will unknowingly run on your database. For example:

Look at the following example, which creates a SELECT statement by adding a variable (txtUserId) to a select

string. The variable is fetched from user input (getRequestString):

txtUserId = getRequestString(“UserId”);

txtSQL = “SELECT * FROM Users WHERE UserId = ” + txtUserId;

If user enter something like this: “100 OR 1=1” then the SzQL statement will look like this:

SELECT * FROM Users WHERE UserId = 100 OR 1=1;

The SQL above is valid and will return ALL rows from the “Users” table, since OR 1=1 is always TRUE. A

hacker might get access to all the user names and passwords in this database.

Explanation

Explanation

As the new device does not have a supplicant, we cannot use 802.1X.

MAC Authentication Bypass (MAB) is a fallback option for devices that don’t support 802.1x. It is virtually

always used in deployments in some way shape or form. MAB works by having the authenticator take the

connecting device’s MAC address and send it to the authentication server as its username and password. The authentication server will check its policies and send back an Access-Accept or Access-Reject just like it would with 802.1x.

Cisco ISE Profiling Services provides dynamic detection and classification of endpoints connected to the

network. Using MAC addresses as the unique identifier, ISE collects various attributes for each network

endpoint to build an internal endpoint database. The classification process matches the collected attributes to prebuilt or user-defined conditions, which are then correlated to an extensive library of profiles. These profiles include a wide range of device types, including mobile clients (iPads, Android tablets, Chromebooks, and so

on), desktop operating systems (for example, Windows, Mac OS X, Linux, and others), and numerous non-user systems such as printers, phones, cameras, and game consoles.

Once classified, endpoints can be authorized to the network and granted access based on their profile. For example, endpoints that match the IP phone profile can be placed into a voice VLAN using MAC Authentication Bypass (MAB) as the authentication method. Another example is to provide differentiated network access to users based on the device used. For example, employees can get full access when accessing the network from their corporate workstation but be granted limited network access when accessing the network from their personal iPhone.

Cisco ISE is a platform that can onboard the endpoint and can issue a CA signed certificate while also automatically configuring endpoint network settings to use the signed endpoint certificate, allowing the endpoint to gain network access. Cisco ISE has an internal CA service that can validate and sign certificate requests from endpoints, generate and store keys and certificates, and provide an OCSP responder to check the validity of certificates. Cisco ISE also supports Enrollment over Secure Transport (EST), which is a protocol that allows endpoints to securely enroll with a CA and obtain certificates. Cisco ISE can use EST to provision certificates to endpoints and configure their network settings to use EAP-TLS authentication. Cisco ISE can also use BYOD workflows to onboard endpoints and issue certificates to them. References:

Understand ISE Internal Certificate Authority Services

Endpoint On-boarding using Internal ISE CA

Cisco ISE BYOD Prescriptive Deployment Guide