ccna-1-modul1

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1. Which of the following descriptions are true regarding the management connections on  Cisco router? (Choose three.)

They are non-network connections.
They are used for initial router configuration.
They are asynchronous serial ports.

2. The console port can be used for which of the following? (Choose three.)
debugging.
password recovery.
troubleshooting.

3. Which of the following describes the function of a WAN?
provides connectivity over a large geographic area.

4. An internetwork must include which of the following? (Choose three.)
switching.
dynamic or static routing.
consistent end-to-end addressing.

5. ABC Company just purchased three new routers to start their company network. Which items are needed to establish a terminal session between a PC and the router for the initial configuration? (Choose three.)
terminal emulation software.
rollover cable.
RJ-45 to DB-9 connector.

ccna-1-modul2

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1. Which two layers of the OSI model have the same functions as the TCP/IP model Network Access Layer? (Choose two.)
Physical
Data Link

2. What is a primary function of the trailer information added by the data link layer encapsulation?
supports error detection

3. During the encapsulation process, what occurs at the data link layer?
The physical address is added.

4. What device is considered an intermediary device?

switch

5.Which layer encapsulates the segment into packets?
network

ccna-1-modul3

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1. What application layer protocol is commonly used to support for file transfers between a client and a server?
HTML
HTTP
***** FTP
Telnet

2. What are two forms of application layer software? (Choose two.)
*****  applications
dialogs
requests
*****  services
syntax

3. A network administrator is designing a network for a new branch office of twenty-five users. What are the advantages of using a client-server model? (Choose two.)
***** centralized administration
does not require specialized software
*****  security is easier to enforce
lower cost implementation
provides a single point of failure

4. What is the purpose of resource records in DNS?
temporarily holds resolved entries
*****  used by the server to resolve names
sent by the client to during a query
passes authentication information between the server and client

5. What is the automated service that matches resource names with the required IP address?
HTTP
SSH
FQDN
***** DNS
Telnet
SMTP

ccna-1-modul4

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1. Based on the transport layer header shown in the diagram, which of the following statements describe the established session? (Choose two.)
This is a UDP header.
*****  This contains a Telnet request.
This contains a TFTP data transfer.
The return packet from this remote host will have an Acknowledgement Number of 43693.
***** This is a TCP header.

2. With TCP/IP data encapsulation, which range of port numbers identifies all well-known applications?
0 to 255
256 to 1022
*****  0 to 1023
1024 to 2047
49153 to 65535

3. Why are port numbers included in the TCP header of a segment?
to indicate the correct router interface that should be used to forward a segment
to identify which switch ports should receive or forward the segment
to determine which Layer 3 protocol should be used to encapsulate the data
*****  to enable a receiving host to forward the data to the appropriate application
to allow the receiving host to assemble the packet in the proper order

4. Which OSI model layer is responsible for regulating the flow of information from source to destination, reliably and accurately?
application
presentation
session
*****  transport
network

5. Refer to the exhibit. Host A is using FTP to download a large file from Server 1. During the download process, Server 1 does not receive an acknowledgment from Host A for several bytes of transferred data. What action will Server 1 take as a result?
create a Layer 1 jam signal
***** reach a timeout and resend the data that needs to be acknowledged
send a RESET bit to the host
change the window size in the Layer 4 header

ccna-1-modul5

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1. In an IPv4 environment, what information is used by the router to forward data packets from one interface of a router to another?

***** destination network address
source network address
source MAC address
well known port destination address

2. What information is added during encapsulation at OSI Layer 3?
source and destination MAC
source and destination application protocol
source and destination port number
*****  source and destination IP address

3. In a connectionless system, which of the following is correct?
The destination is contacted before a packet is sent.
*****  The destination is not contacted before a packet is sent.
The destination sends an acknowledgement to the source that indicates the packet was received.
The destination sends an acknowledgement to the source that requests the next packet to be sent.

4. Which IP packet field will prevent endless loops?
type-of-service
identification
flags
*****  time-to-live
header checksum

5. Which portion of the network layer address does a router use to forward packets?
host portion
broadcast address
*****  network portion
gateway address