OSI Layers Questions and Answers in Networking
Which phrase describes an FTP daemon?
Which two actions are taken by SMTP if the destination email server is busy when email messages are sent? (Choose two.)
When would it be more efficient to use SMB to transfer files instead of FTP?
What is an example of network communication that uses the client-server model?
What is true about the Server Message Block protocol?
Refer to the exhibit. What command was used to resolve a given host name by querying the name servers?
Which DNS server in the DNS hierarchy would be considered authoritative for the domain name records of a company named netacad?
A user accessed the game site www.nogamename.com last week. The night before the user accesses the game site again, the site administrator changes the site IP address. What will be the consequence of that action for the user?
Match the purpose with its DHCP message type
What are two characteristics of peer-to-peer networks? (Choose two.)
Which three layers of the OSI model provide similar network services to those provided by the application layer of the TCP/IP model? (Choose three.)
What is an advantage for small organizations of adopting IMAP instead of POP?
Which application layer protocol uses message types such as GET, PUT, and POST?
A DHCP-enabled client PC has just booted. During which two steps will the client PC use broadcast messages when communicating with a DHCP server? (Choose two.)
Open the PT Activity. Perform the tasks in the activity instructions and then answer the question.
Which PC or PCs are sending FTP packets to the server?
Which three statements describe a DHCP Discover message? (Choose three.)
Which two tasks are functions of the presentation layer? (Choose two.)
Fill in the blank.
What is the acronym for the protocol that is used when securely communicating with a web server?
Select three protocols that operate at the Application Layer of the OSI model. (Choose three.)
Match a statement to the related network model
Peer-to-peer network
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.)
Match the DNS record type to the corresponding description
- a program that is running on an FTP server
Which two actions are taken by SMTP if the destination email server is busy when email messages are sent? (Choose two.)
- SMTP periodically checks the queue for messages and attempts to send them again
- SMTP tries to send the messages at a later time
When would it be more efficient to use SMB to transfer files instead of FTP?
- when downloading large numbers of files from the same server
What is an example of network communication that uses the client-server model?
- A workstation initiates a DNS request when the user types www.cisco.com in the address bar of a web browser.
What is true about the Server Message Block protocol?
- Clients establish a long term connection to servers.
Refer to the exhibit. What command was used to resolve a given host name by querying the name servers?
- nslookup
Which DNS server in the DNS hierarchy would be considered authoritative for the domain name records of a company named netacad?
- netacad.com
A user accessed the game site www.nogamename.com last week. The night before the user accesses the game site again, the site administrator changes the site IP address. What will be the consequence of that action for the user?
- The user will access the site without problems.
Match the purpose with its DHCP message type
- DHCPREQUEST - a message that is used to identify the explicit server and lease offer to accept
- DHCPDISCOVER - a message that is used to locate any available DHCP server on the network
- DHCPOFFER - a message that is used to suggest a lease to a client
- DHCPACK - a message that is used to acknowledge that the lease is successful
What are two characteristics of peer-to-peer networks? (Choose two.)
- resource sharing without a dedicated server
- decentralized resources
Which three layers of the OSI model provide similar network services to those provided by the application layer of the TCP/IP model? (Choose three.)
- session layer
- application layer
- presentation layer
What is an advantage for small organizations of adopting IMAP instead of POP?
- Messages are kept in the mail servers until the client manually deletes them.
Which application layer protocol uses message types such as GET, PUT, and POST?
- HTTP
A DHCP-enabled client PC has just booted. During which two steps will the client PC use broadcast messages when communicating with a DHCP server? (Choose two.)
- DHCPDISCOVER
- DHCPREQUEST
Open the PT Activity. Perform the tasks in the activity instructions and then answer the question.
Which PC or PCs are sending FTP packets to the server?
- PC_2
Which three statements describe a DHCP Discover message? (Choose three.)
- The destination IP address is 255.255.255.255.
- The message comes from a client seeking an IP address.
- All hosts receive the message, but only a DHCP server replies.
Which two tasks are functions of the presentation layer? (Choose two.)
- Compression
- Encryption
Fill in the blank.
What is the acronym for the protocol that is used when securely communicating with a web server?
- HTTPS
Select three protocols that operate at the Application Layer of the OSI model. (Choose three.)
- POP3
- DHCP
- FTP
Match a statement to the related network model
Peer-to-peer network
- no dedicated server required
- client and server roles are set on a per request basis
- a background service is required
- requires a specific user interface
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
Match the DNS record type to the corresponding description
- A - end device address
- NS - authoritative name server
- CNAME - canonical name
- MX - mail exchange record
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