Question

Plz answer 27 to 40

flooding the network with 27. Which of the following is a type of denial-of-service attack that involves broadcast messages that contain a spoofed source address of an intended victim? a. packet storm b. broadcast flood c. smurf attack d. half-open SYN attack 28. When would you most likely NOT choose to use a leased line connection? a. when high-quality, 24/7 access is needed b. for mission critical applications c. when fast upstream as well as downstream communications is required d. when a nondedicated link is needed for backups 29. Where should a NIDS be placed to protect the entire network? a. datacenter b. intermediate distribution frame c. demilitarized zone d. internal LAN 30. What is the decimal equivalent to the binary number 11100000? a. 98 b. 160 c. 196 d. 224 31. Which of the following is a common link-state protocol? a. OSPF b. RIPv2 c. EIGRP d. BGP 32. Which of the following is the correct order of the layers of the OSI model from layer 1 to layer 7? a. Application, Presentation, Session, Transport, Network, Data Link, Physical b. Application, Session, Transport, Presentation, Network, Data Link, Physical c. Physical, Data Link, Network, Transport, Session, Presentation, Application d. Physical, Session, Network, Data Link, Transport, Presentation, Application 33. Your local ISP has provided you with a dedicated line that has a Committed Information Rate of 1.54 Mbps What does this mean?

Answer 1

27. Which of the following is a type of denial-of-service attack that involves broadcast messages that flooding the network containing a spoofed source address of an intended victim?

Ans. C)Smurf attack

The Smurf attack is a type of distributed denial-of-service attack where large numbers ) packets with the victim's spoofed source IP are broadcast to a computer network using an IP broadcast address.

28. When would you most likely NOT choose to use a leased line connection?

Ans.d)when a nondedicated link is needed for backups

Since lased-line is very expensive for backup we can use inexpensive ISP connection.

29. Where should a NIDS be placed to protect the entire network?

Ans.a)intermediate distribution frame

30. What is the decimal equivalent to the binary number 11100000?

Ans. d)224

(11100000)₂ = (224)₁₀

31. Which of the following is a common link-state protocol?

Ans. a)OSPF (Open Shortest Path first algorithm)

32. Which of the following is the correct order of the layers of the OSI model from layer 1 to layer 7

Ans.  c. Physical, Data Link, Network, Transport, Session, Presentation, Application

33. Your local ISP has provided you with a dedicated line that has a Committed Information Rate of 1.54 Mbps What does this mean?

Ans. 1.54 Mbps is the guaranteed minimum transmission rate

34. The company you work for currently has ISDN service in place. Your supervisor wishes to know what sort of ISDN service is being used so that better alternatives can be considered. He tells you that the service has two B-Channels and a D-Channel. What ISDN format do you have?

Ans.  a. Basic Rate Interface (BRI)

35. What type of device should you install as a decoy to lure potential attackers?

Ans. a) Honeypot

36. Which is the IEEE standard that sets the standards for wireless networking?

Ans. d)802.11

37. Which facet of securing access to network data makes data unusable to anyone except authorized users?

Ans. a)encryption

38. What is the local loop, or last mile?

Ans. d)connection between demarcation point and co (central office)

39. Which protocol is used to encrypt data as it travels a network?

Ans. c)IPSec

40.  What can firewalls do to help ensure that a packet is denied if it's not part of an ongoing legitimate conversation?

Ans. Stateful Packet Inspection.