Newest SCP SC0-451 Practice Questions at Zero Cost

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Question 1

You are working on your company's IPTables Firewall; you wish to create a rule to address traffic using ports 1024 through 2048. Which of the following would you use during the creation of your rule?

Correct Answer: 1

Question 2

In order to properly manage the network traffic in your organization, you need a complete understanding of protocols and networking models. In regards to the 7-layer OSI model, what is the function of the Transport Layer?

AThe Transport layer allows two applications on different computers to establish, use, and end a session. This layer establishes dialog control between the two computers in a session, regulating which side transmits, plus when and how long it transmits.

BThe Transport layer manages logical addresses. It also determines the route from the source to the destination computer and manages traffic problems, such as routing, and controlling the congestion of data packets.

CThe Transport layer packages raw bits from the Physical (Layer 1) layer into frames (structured packets for data). Physical addressing (as opposed to network or logical addressing) defines how devices are addressed at the data link layer. This layer is responsible for transferring frames from one computer to another, without errors. After sending a frame, it waits for an acknowledgment from the receiving computer.

DThe Transport layer transmits bits from one computer to another and regulates the transmission of a stream of bits over a physical medium. For example, this layer defines how the cable is attached to the network adapter and what transmission technique is used to send data over the cable.

EThe Transport layer handles error recognition and recovery. It also repackages long messages, when necessary, into small packets for transmission and, at the receiving end, rebuilds packets into the original message. The corresponding Transport layer at the receiving end also sends receipt acknowledgments.

Correct Answer: 2

Question 3

When you took over the security responsibilities at your office, you noticed there were no warning banners on any of the equipment. You have decided to create a warning login banner on your Cisco router. Which of the following shows the correct syntax for the banner creation?

ABanner login C Restricted access. Only authorized users allowed to access this device. C

BLogin banner C Restricted access. Only authorized users allowed to access this device. C

CBanner login Restricted access. Only authorized users allowed to access this device.

DLogin banner Restricted access. Only authorized users allowed to access this device.

EBanner logging C Restricted access. Only authorized users allowed to access this device. C

Correct Answer: 3

Question 4

The exhibit shows a router with three interfaces E0, E1 and S0. Interfaces E0 and E1 are connected to internal networks 192.168.10.0 and 192.168.20.0 respectively and interface S0 is connected to the Internet. The objective is to allow two hosts, 192.168.20.16 and 192.168.10.7 access to the Internet while all other hosts are to be denied Internet access. All hosts on network 192.168.10.0 and 192.168.20.0 must be allowed to access resources on both internal networks. From the following, select all the access list statements that are required to make this possible.

q4_SC0-451

Aaccess-list 53 permit 192.168.20.16 0.0.0.0

Baccess-list 80 permit 192.168.20.16 0.0.0.0

Caccess-list 53 deny 0.0.0.0 255.255.255.255

Daccess-list 80 permit 192.168.10.7 0.0.0.0

Eint S0, ip access-group 53 out

Fint S0, ip access-group 80 out

Correct Answer: 4

B, D, F

Question 5

During a network capture in Network Monitor, you capture some UDP traffic. In a UDP Header, what is the function of the first sixteen bits?

ATo define the upper layer protocol

BTo define the source port number

CTo define the destination port number

DTo define the IP Version

ETo define the type

Correct Answer: 5

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