Cisco 350-701 Exam Dumps

The WCCP-configured router identifies if the Cisco WSA is functional by exchanging periodic messages with the WSA. The WSA sends a Here-I-Am message every 10 seconds to the router, which contains information such as the WSA's IP address, service group, and hash assignment. The router responds with an I-See-You message, which acknowledges the receipt of the Here-I-Am message and provides information such as the router's IP address, service group, and view of the WCCP topology.These messages allow the router and the WSA to maintain a bidirectional communication and to detect any changes or failures in the WCCP network12.

Option C is the correct answer, as it describes the correct message exchange between the WCCP-configured router and the Cisco WSA. Option A is incorrect, as the router does not use ICMP ping to check the WSA's functionality, and the traffic is not transmitted to the router, but redirected by the router. Option B is incorrect, as the router does not use ICMP ping to check the WSA's functionality, and the traffic is not transmitted to the WSA, but redirected by the WSA. Option D is incorrect, as the router does not send a Here-I-Am message, but an I-See-You message, and the WSA does not acknowledge with an I-See-You message, but a Here-I-Am message.Reference:WCCP Router Configuration Example - Cisco.Cisco ASA WCCP Traffic Redirection Guide - Cisco.

Multifactor authentication (MFA) is an authentication method that requires the user to provide two or more verification factors to gain access to a resource such as an application, online account, or a VPN1. MFA is a core component of a strong identity and access management (IAM) policy. MFA can help prevent an attacker from stealing usernames and passwords of users within an organization by adding an extra layer of security beyond the traditional username and password. For example, a user may need to enter a one-time code sent to their phone or email, scan their fingerprint, or use a hardware token to prove their identity.This way, even if an attacker obtains the user's credentials, they cannot access the resource without the second factor2.

The other options are not technologies that can help prevent an attacker from stealing usernames and passwords of users within an organization.RADIUS-based REAP is a protocol that allows wireless clients to authenticate with a RADIUS server, but it does not provide MFA3.Fingerprinting is a technique that identifies the operating system or application of a device based on its network characteristics, but it does not provide MFA4.Dynamic ARP Inspection is a security feature that prevents ARP spoofing attacks by validating ARP packets, but it does not provide MFA5.

Cisco NBAR2 is a classification engine that recognizes and classifies a wide variety of protocols and applications based on their deep packet inspection (DPI) signatures. NBAR2 enables the platform to identify and output various applications within the network traffic flows, such as web, email, voice, video, and so on. NBAR2 also supports custom protocols and applications, allowing the platform to classify traffic based on user-defined criteria. NBAR2 helps the platform to apply the appropriate quality of service (QoS), security, and policy for each application or protocol.Reference:=

Some possible references are:

Cisco NBAR2

Classifying Network Traffic Using NBAR

Next Generation NBAR (NBAR2)

ZBFW stands for Zone-Based Firewall, which is a feature that allows unidirectional application of IOS firewall policies between groups of interfaces known as zones. Interfaces are assigned to zones, and firewall rules are applied to specific types of traffic moving in one direction between the zones. ZBFW enforces a secure inter-zone policy by default, meaning traffic cannot pass between security zones until an explicit policy allowing that traffic is defined. The zone itself is an abstraction of multiple interfaces with the same or similar security requirements that can be logically grouped together. ZBFW is CBAC's replacement and offers intuitive policies for multiple-interface routers, increased granularity of firewall policy application, and a default deny-all policy that prohibits traffic between firewall security zones until an explicit policy is applied to allow desirable traffic. ZBFW is supported on IOS devices running 12.4(6)T or later, and ASR devices running 12.2(33) or later.Reference:

Implementing and Operating Cisco Security Core Technologies (SCOR) v1.0, Module 4: Securing the Cloud, Lesson 4.1: Introducing Cisco Cloud Services Router 1000V Series, Topic 4.1.2: Zone-Based Firewall

Understand the Zone-Based Policy Firewall Design

Managing Zone-based Firewall Rules

Zone Based Firewall Overview

CBAC vs. Zone-based firewall