1. A client is communicating with a server on a different segment of the network. How does the server determine what service is being requested by the client?
*identifies the appropriate service from the destination port field
2. What is the function of the TCP three-way handshake?
*It synchronizes both ends of a connection by allowing both sides to agree upon initial sequence numbers.
3. What are three unique characteristics of UDP? (Choose three.)
*low overhead
*no flow control
*no error-recovery function
4. Within TCP, what combination makes up a socket pair?
*source IP address and port with a destination IP address and port
5. What type of update allows client computers to register and update their resource records with a DNS server whenever changes occur?
*dynamic
6. Which DNS zone resolves an IP address to a qualified domain name?
*reverse lookup
7. Which two tasks are the responsibility of the local DNS server? (Choose two.)
*mapping name-to-IP addresses for internal hosts
*forwarding name resolution requests to a caching-only server
8. Which protocol is used to send e-mail, either from a client to a server or from a server to another server?
*SMTP
9. A manufacturing company subscribes to certain hosted services from their ISP. The services required include hosted world wide web, file transfer, and e-mail. Which protocols represent these three key applications? (Choose three.)
*FTP
*HTTP
*SMTP
10. To meet customer expectations, an ISP must guarantee a level of service that is based on what two factors? (Choose two.)
*availability
*reliability
11. Which two statements are true about the OSI and TCP/IP models? (Choose two.)
*The OSI network layer is comparable to the Internet layer of the TCP/IP model.
*The TCP/IP model is based on four layers and the OSI model is based on seven layers.
12. What type of DNS server is typically maintained by an ISP?
*caching-only
13. Which two options correctly match protocol and well-known port number? (Choose two.)
*HTTP - 80
*SMTP - 25
14. What are three characteristics of HTTPS? (Choose three.)
*It supports authentication.
*It encrypts packets with SSL.
*It requires additional server processing time.
15. User1 is sending an e-mail to User2@cisco.com. What are two characteristics of the process of sending this data? (Choose two.)
*It utilizes a store and forward process.
*SMTP is used to send the e-mail message to the mail servers.
16. Which three fields do a TCP header and a UDP header have in common? (Choose three.)
*source port
*checksum
*destination port
17. When a host is communicating with multiple applications on the same server at the same time, which two values will likely be the same in all packets for each session? (Choose two.)
*IP address
*MAC address
18. What are three characteristics of network reliability? (Choose three.)
*Redundant hardware provides enhanced reliability.
*Fault tolerance is a measure of reliability.
*The longer the MTBF, the greater the reliability.
19. Refer to the exhibit. Host1 is in the process of setting up a TCP session with Host2. Host1 has sent a SYN message to begin session establishment. What happens next?
*Host2 sends a SYN-ACK message to Host1.
20. Refer to the exhibit. The PC is requesting HTTP data from the server. What is a valid representation of source and destination sockets for this request?
*Source - 192.168.1.17:1045 ; Destination - 192.168.2.39:80
21. Refer to the exhibit. Which two statements are true about this file? (Choose two.)
*The command ping fileserv will use IP address 172.16.5.10.
*If the ping www.cisco.com command is issued, the file will be checked for the Cisco web server IP address.
*identifies the appropriate service from the destination port field
2. What is the function of the TCP three-way handshake?
*It synchronizes both ends of a connection by allowing both sides to agree upon initial sequence numbers.
3. What are three unique characteristics of UDP? (Choose three.)
*low overhead
*no flow control
*no error-recovery function
4. Within TCP, what combination makes up a socket pair?
*source IP address and port with a destination IP address and port
5. What type of update allows client computers to register and update their resource records with a DNS server whenever changes occur?
*dynamic
6. Which DNS zone resolves an IP address to a qualified domain name?
*reverse lookup
7. Which two tasks are the responsibility of the local DNS server? (Choose two.)
*mapping name-to-IP addresses for internal hosts
*forwarding name resolution requests to a caching-only server
8. Which protocol is used to send e-mail, either from a client to a server or from a server to another server?
*SMTP
9. A manufacturing company subscribes to certain hosted services from their ISP. The services required include hosted world wide web, file transfer, and e-mail. Which protocols represent these three key applications? (Choose three.)
*FTP
*HTTP
*SMTP
10. To meet customer expectations, an ISP must guarantee a level of service that is based on what two factors? (Choose two.)
*availability
*reliability
11. Which two statements are true about the OSI and TCP/IP models? (Choose two.)
*The OSI network layer is comparable to the Internet layer of the TCP/IP model.
*The TCP/IP model is based on four layers and the OSI model is based on seven layers.
12. What type of DNS server is typically maintained by an ISP?
*caching-only
13. Which two options correctly match protocol and well-known port number? (Choose two.)
*HTTP - 80
*SMTP - 25
14. What are three characteristics of HTTPS? (Choose three.)
*It supports authentication.
*It encrypts packets with SSL.
*It requires additional server processing time.
15. User1 is sending an e-mail to User2@cisco.com. What are two characteristics of the process of sending this data? (Choose two.)
*It utilizes a store and forward process.
*SMTP is used to send the e-mail message to the mail servers.
16. Which three fields do a TCP header and a UDP header have in common? (Choose three.)
*source port
*checksum
*destination port
17. When a host is communicating with multiple applications on the same server at the same time, which two values will likely be the same in all packets for each session? (Choose two.)
*IP address
*MAC address
18. What are three characteristics of network reliability? (Choose three.)
*Redundant hardware provides enhanced reliability.
*Fault tolerance is a measure of reliability.
*The longer the MTBF, the greater the reliability.
19. Refer to the exhibit. Host1 is in the process of setting up a TCP session with Host2. Host1 has sent a SYN message to begin session establishment. What happens next?
*Host2 sends a SYN-ACK message to Host1.
20. Refer to the exhibit. The PC is requesting HTTP data from the server. What is a valid representation of source and destination sockets for this request?
*Source - 192.168.1.17:1045 ; Destination - 192.168.2.39:80
21. Refer to the exhibit. Which two statements are true about this file? (Choose two.)
*The command ping fileserv will use IP address 172.16.5.10.
*If the ping www.cisco.com command is issued, the file will be checked for the Cisco web server IP address.
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