CCNA1 Chapter 10 Study Guide

What is an advantage for small organizations of adopting IMAP instead of POP?

Answer: Messages are kept in the mail servers until they are manually deleted from the email client

Refer to the exhibit. What command was used to resolve a given host name by querying the name servers? <output omitted> >cisco.netacad.net Server: Unknown Address: 192.168.0.1 Non-authoritative answer: Name: cisco.netacad.net Address: 72.163.6.223 <output omitted>

Answer: NSLOOKUP

Which statement is true about FTP?

Answer: The client can download data from or upload data to the server

Displays web pages

HTTP

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)

Answer: -Session layer -Application layer -Presentation layer

Allows viewing of messages on email clients

IMAP

Which DNS server in the DNS hierarchy would be considered authoritative for the domain name records of a company named netacad? -.com -netacad.com -mx.netacad.com -www.netacad.com

-netacad.com

Sends email messages

SMTP

Which application layer protocol is used to provide file-sharing and print services to Microsoft applications?

Answer: SMB

Which layer in the TCP/IP model is used for formatting, compressing, and encrypting data? -internetwork -session -presentation -application -network access

application

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 • DHCPACK • DHCPOFFER • DHCPREQUEST • DHCPNAK

• DHCPDISCOVER DHCPREQUEST

Which two actions are taken by SMTP if the destination email server is busy when email messages are sent? (Choose two) -SMTP sends an error message back to the sender and closes the connection -SMTP tries to send the messages at a later time. -SMTP will discard the message if it is still not delivered after a predetermined expiration time. -SMTP periodically checks the queue for messages and attempts to send them again. -SMTP sends the messages to another mail server for delivery.

-SMTP tries to send the messages at a later time -SMTP periodically checks the queue for messages and attempts to send them again.

Which two tasks can be performed by a local DNS server? (Choose two) -providing IP addresses to local hosts -allowing data transfer between two network devices -mapping name-to-IP addresses for internal hosts -forwarding name resolution requests between servers -retrieving email messages

-mapping name-to-IP addresses for internal hosts -forwarding name resolution requests between servers

The application layer of the TCP/IP model performs the functions of what three layers of the OSI model? (Choose Three) -physical -session -network -presentation -data link -transport -application

-session -presentation -application

What are two characteristics of the application layer of the TCP/IP model? (Choose two) -responsibility for logical addressing -responsibility for physical addressing -the creation and maintenance of dialogue between source and destination applications -closest to the end user -the establishing of window size

-the creation and maintenance of dialogue between source and destination applications -closest to the end user

When would it be more efficient to use SMB to transfer files instead of FTP? -when downloading large files with a variety of formats from different servers -when a peer-to-peer application is required -when the host devices on the network use the Windows operating system -when downloading large numbers of files from the same server -when uploading the same file to multiple remote servers

-when downloading large numbers of files from the same server

When retrieving email messages, which protocol allows for easy, centralized storage and back up of emails that would be desirable for a small- to medium-sized business? -IMAP -POP -SMTP -HTTPS

ANSWER: IMAP

What do the client/server and peer-to-peer network models have in common? -Both models have dedicated servers. -Both models support devices in server and client roles. -Both models require the use of TCP/IP-based protocols. -Both models are used only in the wired network environment.

Answer: Both models support devices in server and client roles.

Select three protocols that operate at the Application Layer of the OSI model (Choose three) -ARP -TCP -DSL -FTP -POP3 -DHCP

Answer: FTP POP3 DHCP

What are two characteristics of peer-to-peer networks (choose two) -scalable -one way data flow -decentralized resources -centralized user accounts -resource sharing without a dedicated server

Answer: -Decentralized resources -resource sharing without a dedicated server

Which three statements describe a DHCP Discover message (Choose three) -The source MAC address is 48 ones (FF-FF-FF-FF-FF-FF) -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. -Only the DHCP server receives the message.

Answer: -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

A manufacturing company subscribes to certain hosted services from its ISP. The services that are required include hosted world wide web, file transfer, and email. Which protocols represent these three key applications? (Choose three) -FTP -HTTP -DNS -SNMP -DHCP -SMTP

Answer: FTP HTTP SMTP

Two student are working on a network design project. One student is doing the drawing, while the other student is writing the proposal. The drawing is finished and the student wants to share the folder that contains the drawing so that the other student can access the file and copy it to a USB drive. Which networking model is being used? -peer to peer -client-based -master-slave -point-to-point

Answer: Peer-to-peer

Which two tasks are functions of the presentation layer? (Choose two) -compression -addressing -encryption -session control -authentication

Answer: -compression -encryption

What is an example of network communication that uses the client-server model? -A user uses eMule to download a file that is shared by a friend after the file location is determined. -A workstation initiates an ARP to find the MAC address of a receiving host. -A user prints a document by using a printer that is attached to a workstation of a coworker. -A workstation initiates a DNS request when the user types www.cisco.com in the address bar of a bar browser

Answer: A workstation initiates a DNS request when the user types www.cisco.com in the address bar of a web browser.

What part of the URL, http:www.cisco.com/index.html, represents the top-level DNS domain?

Answer: .com

What is true about the Server Message Block protocol?

Answer: Client establish a long term connection to servers.

The HTTP message type used by the client to request data from the web server is the _______ message.

Answer: GET

Which application layer protocol uses message types such as GET, PUT, and POST? -DNS -DHCP -SMTP -HTTP -POP3

Answer: HTTP

What is the acronym for the protocol that is used when securely communicating with a web server?

Answer: HTTPS

Maps URLs to numerical addresses

DNS

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 not be able to access the site. • The user will access the site without problems. • The user will have to modify the DNS server address on the local PC in order to access the site. • The user will have to issue a ping to this new IP address to be sure that the domain name remained the same.

Answer: The user will access the site without problems.

Which phrase describes an FTP daemon?

Answer: a program that is running on an FTP server

Match two statements to the related network model. (Not all options are used.) -requires a specific user interface -a background service is required

Answer: peer-to-peer application

Dynamically assigns IP addresses to clients

DHCP

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

Match two statements to the related network model. (Not all options are used.) -no dedicated server is required. -client and server roles are set on a per request basis

Peer-to-peer network

Which two definitions accurately describe the associated application layer protocol? (Choose two) SMTP-transfers web pages from web servers to clients Telnet-provides remote access to servers and networking devices DNS-resolves Internet names to IP addresses FTP-transfers email messages and attachments HTTP-enables devices on a network to obtain IP address

Telnet-provides remote access to servers and networking devices DNS-resolves Internet names to IP addresses