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NEW QUESTION: 1
Refer to the exhibit.
On this MPLS-based network ring, links have failed between router A and router E.
These failures formed microloops while the network converged, when A forwarded traffic to B but B forwards it back to A.
Which technology is the simplest solution to avoid microloops without enabling a new protocol in the network?
A. Loop-Free Alternate
B. Remote Loop-Free Alternate
C. TE Fast ReRoute
D. IP Fast ReRoute
Answer: B
NEW QUESTION: 2
Which statement is true about a SMURF attack?
A. It sends ICMP Echo Replies to known IP addresses in a subnet
B. The attacker uses spoofed destination address to launch the attack
C. In order to mitigate the attack you need to enable IP directed broadcast on the router interface
D. It is used by the attackers to check if destination addresses are alive
E. It sends ICMP Echo Requests to a broadcast address of a subnet
F. It exhausts the victim machine r poofed source address of a subnet resources with large number of ICMP Echo Requests from a subnet
Answer: E
NEW QUESTION: 3
You have a table named Table1 that contains 500 million records and is 200 GB. The indexes for Table! are configured as shown in the following table.
You need to reduce the fragmentation. The solution must minimize disk I/O and the impact on users.
Which approach should you use for each index? To answer, drag the appropriate approaches to the correct indexes. Each approach may be used once, more than once, or not at all. You may need to drag the split bar between panes or scroll to view content.
NOTE: Each correct selection is worth one point.
Answer:
Explanation:
Explanation:
References:
https://blog.sqlauthority.com/2012/04/04/sql-server-cleaning-up-sql-server-indexes-defragmentation-fillfactor-video/
https://docs.microsoft.com/en-us/sql/relational-databases/indexes/reorganize-and-rebuild-indexes?view=sql-server-2017
NEW QUESTION: 4
During the initial stage of configuration of your firewall, which of the following rules appearing in an Internet firewall policy is inappropriate?
A. Appropriate firewall documentation and a copy of the rulebase shall be maintained on offline storage at all times.
B. The firewall shall be configured to deny all services not expressly permitted.
C. The firewall software shall run on a dedicated computer.
D. The firewall should be tested online first to validate proper configuration.
Answer: D
Explanation:
As it is very clearly state in NIST SP 800-41-Rev1: New firewalls should be tested and evaluated before deployment to ensure that they are working
properly. Testing should be completed on a test network without connectivity to the production
network. This test network should attempt to replicate the production network as faithfully as
possible, including the network topology and network traffic that would travel through the firewall.
Aspects of the solution to evaluate include the following:
Connectivity
Users can establish and maintain connections through the firewall.
Ruleset
Traffic that is specifically allowed by the security policy is permitted. All traffic that is not allowed by
the security policy is blocked. Verification of the ruleset should include both reviewing it manually
and testing whether the rules work as expected.
Application Compatibility
Host-based or personal firewall solutions do not break or interfere with the use of existing software
applications. This includes network communications between application components. Network
firewall solutions do not interfere with applications that have components that interact through the
firewall (e.g., client and server software).
Management
Administrators can configure and manage the solution effectively and securely.
Logging
Logging and data management function in accordance with the organization's policies and
strategies.
Performance
Solutions provide adequate performance during normal and peak usage. In many cases, the best
way to test performance under the load of a prototype implementation is to use simulated traffic
generators on a live test network to mimic the actual characteristics of expected traffic as closely
as possible. Simulating the loads caused by DoS attacks can also be helpful in assessing firewall
performance. Testing should incorporate a variety of applications that will traverse the firewall,
especially those that are most likely to be affected by network throughput or latency issues.
Security of the Implementation
The firewall implementation itself may contain vulnerabilities and weaknesses that attackers could
exploit. Organizations with high security needs may want to perform vulnerability assessments
against firewall components.
Component Interoperability
Components of the firewall solution must function together properly. This is of greatest concern
when a variety of components from different vendors are used.
Policy Synchronization If there are multiple firewalls running synchronized policies or groups of rules, test that the synchronization works in various scenarios (such as if one or more nodes are offline).
Additional Features Additional features that will be used by the firewall-such as VPN and antimalware capabilities-should be tested to ensure they are working properly.
If a firewall needs to be brought down for reconfiguration, Internet services should be disabled or a secondary firewall should be made operational; internal systems should not be connected to the Internet without a firewall.
After being reconfigured and tested, the firewall must be brought back into an operational and reliable state.
Reference(s) used for this question: GUTTMAN, Barbara & BAGWILL, Robert, NIST Special Publication 800-xx, Internet Security Policy: A Technical Guide, Draft Version, May 25, 2000 (pages 76-78). and NIST SP 800-41-Rev1, Guidelines on Firewalls and Firewall Policy