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Exam Code: 350-018
Exam Name: CCIE Security Written Exam v4.0
One year free update, No help, Full refund!
350-018 Questions and answers Total Q&A: 575 Questions and Answers
Last Update: 12-28,2015

350-018 Real Dumps Detail: 350-018 Questions and answers

Exam Code: 350-018v4
Exam Name: CCIE Security Exam (4.0)
One year free update, No help, Full refund!
350-018v4 Real Exams Total Q&A: 575 Questions and Answers
Last Update: 12-28,2015

350-018v4 Study Materials Detail: 350-018v4 Real Exams

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NO.1 Which signature engine would you choose to filter for the regex [aA][tT][tT][aA][cC][kK] in the
URI field of the HTTP header?
A. ATOMIC IP
B. AIC HTTP
C. string TCP
D. service HTTP
Answer: D

350-018 Actual Test 350-018 braindump
Reference: https://supportforums.cisco.com/blog/149481/introduction-regular-expressionsips

NO.2 Which statement about Storm Control implementation on a switch is true?
A. Storm Control is enabled by default.
B. Storm Control uses the bandwidth and rate at which a packet is dispatched to measure the
activity.
C. Storm Control uses the bandwidth and rate at which a packet is received to measure the activity.
D. Storm Control does not prevent disruption due to unicast traffic.
E. Storm Control is implemented as a global configuration.
Answer: C

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Explanation:
The traffic storm control threshold numbers and the time interval combination make the traffic storm
control algorithm work with different levels of granularity. A higher threshold allows more packets to
pass through. Traffic storm control is implemented in hardware. The traffic storm control circuitry
monitors packets passing from a LAN interface to the switching bus. Using the Individual/Group bit in
the packet destination address, the traffic storm control circuitry determines if the packet is unicast
or broadcast, keeps track of the current count of packets within the 1-second interval and when the
threshold is reached, traffic storm control filters out subsequent packets.
Reference:
http://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst6500/ios/122SX/configuration/guide/b
ook/storm.pdf

NO.3 Refer to the exhibit.
Why does the EasyVPN session fail to establish between the client and server?
A. ISAKMP key mismatch
B. Incorrect group configuration on the client
C. Incorrect virtual-template configuration on the sever
D. Incomplete ISAKMP profile configuration on the server
E. Incorrect IPsec phase-2 configuration on the server
Answer: D
Explanation:
Under the isakmp configuration on the server, this command is missing:
Isakmp configuration address respond
If this command is not applied then the client will not be able to obtain the ip address from the ip
pool defined on the server.

NO.4 Which three fields are part of the AH header? (Choose three.)
A. Protocol ID
B. Application Port
C. Source Address
D. Packet ICV
E. Next Header
F. Destination Address
G. SPI identifying SA
Answer: D,E,G

350-018 Exam Questions
Explanation:
The following AH packet diagram shows how an AH packet is constructed and interpreted:[8][9]
Authentication Header format Offsets
Octet16 0 1 2 3 Octet16 Bit10 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26
27 28 29 30 31 0 0
Next Header Payload Len Reserved
4 32
Security Parameters Index (SPI)
8 64
Sequence Number
C 96
Integrity Check Value (ICV)...
... ...
Reference: https://en.wikipedia.org/wiki/IPsec

NO.5 Refer to the exhibit.
If SW4 is sending superior BPDUs, where should the root guard feature be configured to preserve
SW3 as a root bridge?
A. Sw3 Gi0/0 interface.
B. SW4 Gi0/0 interface.
C. Sw2 Gi0/1 interface.
D. SW2 Gi0/1 and SW3 Gi0/1
Answer: C

350-018 Actual Test
Explanation:
Root guard is a feature that can be used to influence which switches are eligible to become the root
bridge. Although priorities are used to determine who becomes the root bridge, they provide no
mechanism to determine who is eligible to become the root bridge. There is nothing to stop a new
switch being introduced to the network with a lower bridge ID, which allows it to become the root
bridge. The introduction of this new switch can affect the network, as new paths may be formed that
are not ideal for the traffic flows of the network. Figure demonstrates why you might need to
configure root guard.
Figure Root Guard Topology In figure, a new switch (Switch-D) has been added to the network by
connecting to Switch-
C. Currently Switch-A is the root bridge and has a gigabit connection to Switch-B, which is the
secondary root bridge. A lot of server-to-server traffic traverses the link between Switch-A and
Switch-B. Switch-D has been configured with the lowest priority in the network (a priority of 0 as
indicated by the bridge ID of Switch-D), and thus becomes the root bridge. This has the effect of
blocking the gigabit port (port 2/1) on Switch-B, severely affecting the performance of the network,
because server traffic must travel over 100-Mbps uplinks from Switch-A
Switch-C
Switch-B and vice versa. To prevent the scenario in Figure from occurring, you can configure the root
guard feature to prevent unauthorized switches from becoming the root bridge. When you enable
root guard on a port, if superior configuration BPDUs to the current configuration BPDUS generated
by the root bridge are received, the switch blocks the port, discards the superior BPDUs and assigns a
state of root inconsistent to the port.

NO.6 Which protocol is superseded by AES?
A. RSA
B. MD5
C. DES
D. RC4
Answer: C

350-018 Study Materials
Explanation:
DES is now considered to be insecure for many applications. This is chiefly due to the 56bit key size
being too small; in January, 1999, distributed.net and the Electronic Frontier Foundation collaborated
to publicly break a DES key in 22 hours and 15 minutes (see chronology). There are also some
analytical results which demonstrate theoretical weaknesses in the cipher, although they are
infeasible to mount in practice. The algorithm is believed to be practically secure in the form of Triple
DES, although there are theoretical attacks. In recent years, the cipher has been superseded by the
Advanced Encryption Standard (AES). Furthermore, DES has been withdrawn as a standard by the
National Institute of Standards and Technology (formerly the National Bureau of Standards).
http://en.wikipedia.org/wiki/Data_Encryption_Standard

NO.7 Which Cisco IOS IPS signature action denies an attacker session using the dynamic access list?
A. deny-connection-inline
B. deny-session-inline
C. reset-tcp-action
D. produce-alert
E. deny-attacker-inline
F. deny-packet-inline
Answer: A

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Explanation:
Deny connection inline: This action prevents further communication for the specific TCP flow. This
action is appropriate when there is the potential for a false alarm or spoofing and when an
administrator wants to prevent the action but not deny further communication.

NO.8 Which command is required in order for the Botnet Traffic Filter on the Cisco ASA appliance to
function properly?
A. inspect dns dynamic-filter-snoop
B. dynamic-filter whitelist
C. inspect botnet
D. dynamic-filter inspect tcp/80
Answer: A

350-018 Latest Dumps
Explanation:
Enable DNS snooping on the external interface ASA(config)# policy-map botnet-policy ASA(config-
pmap)# class botnet-DNS
ASA(config-pmap-c)# inspect dns dynamic-filter-snoop
Reference: https://supportforums.cisco.com/document/33011/asa-botnet-configuration