Syngress - Eleventh Hour Network+ Exam N10-004 Study Guide (11 ...

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142 CHAPTER 8 Security Standards and Services user in a method similar to this, but could not serve to authenticate the server. Answer D is incorrect because tokens are used for one-way authentication. 3. Correct answer and explanation: D. All these options have their own benefits and detriments. A combination of all of them in a multifactor authentication system would provide the highest level of security although it would be quite an inconvenience to the user. Incorrect answers and explanations: Answer A is incorrect because, while this is a valid solution for the multifactor authentication requirement, it is not the most secure solution. Answer B is incorrect because this too is not the most secure solution. Answer C is incorrect as well because any twofactor authentication method is not as secure as a four-factor authentication method. 4. Correct answer and explanation: B. Use LDAP over SSL/TLS to encrypt the authentication data. This will ensure that no LDAP authentication is performed unencrypted so that anyone capturing the packets on the network will be able to read it easily. Incorrect answers and explanations: Answer A is incorrect because LDAP doesn’t encrypt data transmitted between the client and the server. Answer C is incorrect because even though it is important to use strong passwords, it does not protect the authentication data from being captured by a packet sniffer. Answer D is incorrect because HTTP/S is a protocol for transferring Web pages securely. 5. Correct answer and explanation: D. Answer D is correct because a packet filter will evaluate each packet and either block or allow the traffic from reaching its destination based on the rules defined. In this case, the packet filter would examine the packets for the bad IP addresses and the action taken on the packets would be to drop or block them. Incorrect answers and explanations: A, B, and C. Answer A is incorrect because NAT is the process of mapping external to internal IP addresses, which is not being described here. Answer B is incorrect because a proxy server functions as a middle device which passes information from a requesting client to a destination server, and then, once a response is received from the server back to the proxy, the proxy passes the information back to the requesting client. Proxy servers can be used to speed up responses by caching content such as Web pages, and they can also be used for security purposes to keep the internal clients hidden from the external world. Answer C is incorrect because stateful inspection is when a device, typically a firewall, keeps track of state of network connections. This allows the firewall to detect when packets have been modified or if they are not appropriate to be transmitted, but by only analyzing the header information, the firewall remains efficient.
CHAPTER 9 Network Management 143 <strong>Exam</strong> objectives in this chapter ■ Network Management ■ Configuration Management ■ Network Monitoring NETWORK MANAGEMENT A common way of characterizing network management functions is by using the acronym FCAPS: fault, configuration, accounting, performance, and security. Network management can include many functions; some of these functions include planning, allocating, deploying, monitoring resources, load balancing, security management, performance management, bandwidth management, and route analytics. CONFIGURATION MANAGEMENT Configuration management (CM) is a practice that involves documentation of a device’s configuration, as well as keeping that documentation up-to-date, so that any future changes can be controlled and tracked. By having this information, you can replace devices and make changes to the network quickly. Fast Facts The following are some key points related to CM: ■ Compile information on the components of your network and create an inventory that can be used to track items that need to be replaced or upgraded. ■ Follow a life cycle for computer equipment and replace older machines every 3 or 4 years.
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