3.4.5.Considering IP routing what statement is the best answer?O A: Static routing is always prefered over dynamic routingOB: Dynamic routing is always prefered over static routing○ C: Static routing is prefered over dynamic routing if it gives the longest prefix matchOD: Dynamic routing is prefered over static routing if it gives the shortest prefix matchO E: Static route is allways used as a last-resort solution if the dynamic routing fallsWhich statement is correct regarding asymmetric cryptography?O A: Own public key of the peer is used during encryption to send encrypted message to the neighborOB: Own public key is used to generate signed message and send it to the neighbor○ C: Peer's public key of the peer is used during encryption to send encrypted message to that neighborOD: Peer's private key is used to generate signed message and send it to that neighborWhich statement is true?O A: TCP/IP standards exactly match with ISO OSI layered reference modelOB: TCP was the original transport layer protocol for IP. UDP was developed years later to support the increased demand on high spped communication.○ C: UDP was the native IP protocol, TCP was introduced years later to support reliability.OD: PING' uses UDP only as a transport layer protocolO E: IP defines hop-by-hop transport, where every interim network device (the routes) makes individual decison on the forwarding to reach the target application. (see traceroute as a visualization of the hops)OF: None of above 1. Whihc protocol is used to securely interconnect network devices?O A: TCPOB: IPSECC: L2TPD: PPTPO E: IP/VPNOF: IEEE802.1X2. Which statment is true about the TCP 3 way-handshake (initiated by the host, and answered by a server)?O A: The server sends back the acknowledge as a SYN message with the same sequence number as it was received from the host.OB: The server sends back the acknowledge as a SYN message with the same sequence number as received.O C: The host always start the sequence numbering from 1024.OD: The server sends back the acknowledge as a SYN message with a random number as sequence ID.O E: Both the SYN-ACK and ACK messages uses a sequence number which is higher with one than the received one. (eg. if the received is 1024, then the ack is 1025)OF: Both SYN and SYN-ACK use random sequence numberOG: None of above

“Since you have posted multiple questions, we will provide the solution only to the first question…

Answered: 1. Whihc protocol is used to securely…

1. Whihc protocol is used to securely interconnect network devices? A: TCP B: IPSEC C: L2TP D: PPTP E: IP/VPN OF: IEEE802.1X

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Question 4 Given below a Point-to-point communication trace taken by Wireshark a network protocol analyzer software. ETHER: Ethernet Header ETHER: Packet 3 arrived at 11:42:27.64 ETHER: Packet size = 64 bytes ETHER: Destination = 8:0:20:18:ba:40 ETHER: Source = aa:0:4:0:1f:c8 ETHER: Ethertype = 0800 (IP) IP: IP Header IP: Version = 4 = 20 bytes IP: Header length IP: Type of service = 0x00 = 0 (precedence) = normal delay 0... = normal throughput = normal reliability IP: х хх. ... IP: ... 0 .... IP: IP: .0.. IP: Total length = 40 bytes = 41980 IP: Identification IP: Flags = 0x4 = do not fragment last fragment 0 bytes IP: .1.. IP: ..0. IP: Fragment offset = IP: Time to live = 63 seconds/hops IP: Protocol = 6 IP: Header checksum = af63 IP: Source address = 163.173.32.65 IP: Destination address = 216.58.207.4 IP: No options ТСP: ----- ТСР Нeader TCP: Source port = 1368 TCP: Destination port = 25 (SMTP) TCP: Sequence number = 143515262 TCP: Acknowledgement number = 3128387273 TCP: Data…
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