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EC-COUNCIL Certification
312-38 Exam
EC-COUNCIL.312-38.v2022-01-25.q147 Dumps

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Question 36

Which of the following is a passive attack?

A.Unauthorized access
B.Session hijacking
C.Replay attack
D.Traffic analysis

Correct Answer: D

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Question 37

Which of the following protocols is used for exchanging routing information between two gateways in a network of autonomous systems?

A.IGMP
B.ICMP
C.EGP
D.OSPF

Correct Answer: C

EGP stands for Exterior Gateway Protocol. It is used for exchanging routing information between two gateways in a network of autonomous systems. This protocol depends upon periodic polling with proper acknowledgements to confirm that network connections are up and running, and to request for routing updates. Each router requests its neighbor at an interval of 120 to 480 seconds, for sending the routing table updates. The neighbor host then responds by sending its routing table. EGP-2 is the latest version of EGP. Answer option B is incorrect. Internet Control Message Protocol (ICMP) is a maintenance protocol that allows routers and host computers to swap basic control information when data is sent from one computer to another. It is generally considered a part of the IP layer. It allows the computers on a network to share error and status information. An ICMP message, which is encapsulated within an IP datagram, is very useful to troubleshoot the network connectivity and can be routed throughout the Internet. Answer option A is incorrect. Internet Group Management Protocol (IGMP) is a communication protocol that multicasts messages and information among all member devices in an IP multicast group. However, multicast traffic is sent to a single MAC address but is processed by multiple hosts. It can be effectively used for gaming and showing online videos. IGMP is vulnerable to network attacks. Answer option D is incorrect. Open Shortest Path First (OSPF) is a routing protocol that is used in large networks. Internet Engineering Task Force (IETF) designates OSPF as one of the Interior Gateway Protocols. A host uses OSPF to obtain a change in the routing table and to immediately multicast updated information to all the other hosts in the network.

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Question 38

Which of the following is a symmetric 64-bit block cipher that can support key lengths up to 448 bits?

A.IDEA
B.BLOWFISH
C.HAVAL
D.XOR

Correct Answer: B

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Question 39

Which of the following is a class of attacks to break through, which depends on a greater probability of collisions between random attack was detected, and try to fixed rate permutations?

A.None
B.phishing attack
C.birthday attack
D.replay attack
E.Dictionary attack

Correct Answer: C

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Question 40

Which of the following VPN topologies establishes a persistent connection between an organization's main office and its branch offices using a third-party network or the Internet?

A.Star
B.Hub-and-Spoke
C.Point-to-Point
D.Full Mesh

Correct Answer: B

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