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

ccna-1-modul6

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1. Refer to the exhibit. Which network prefix will work with the IP addressing scheme shown in the graphic.

/24
/16
/20
***** /27
/25
/28

2. Which IPv4 subnetted addresses represent valid host addresses? (Choose three.)
172.16.4.127 /26
***** 172.16.4.155 /26
***** 172.16.4.193 /26
172.16.4.95 /27
172.16.4.159 /27
***** 172.16.4.207 /27

3. Which statements are true regarding IP addressing? (Choose two.)
NAT translates public addresses to private addresses destined for the Internet.
Only one company is allowed to use a specific private network address space.
***** Private addresses are blocked from public Internet by router.
Network 172.32.0.0 is part of the private address space.
***** IP address 127.0.0.1 can be used for a host to direct traffic to itself.

4. Which process do routers use to determine the subnet network address based • upon a given IP address and subnet mask?
binary adding
hexadecimal anding
binary division
binary multiplication
***** binary ANDing

5. Refer to the exhibit. Host A is connected to the LAN, but it cannot get access to any resources on the Internet. The configuration of the host is shown in the exhibit. What could be the cause of the problem?
The host subnet mask is incorrect.
The default gateway is a network address.
The default gateway is a broadcast address.
***** The default gateway is on a different subnet from the host.

ccna-1-modul7

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1. Which three factors should be considered when implementing a Layer 2 protocol in a network? (Choose three.)

the Layer 3 protocol selected
***** the geographic scope of the network
the PDU defined by the transport layer
***** the physical layer implementation
***** he number of hosts to be interconnected

2. Refer to the exhibit. Assuming that the network in the exhibit is converged meaning the routing tables and ARP tables are complete, which MAC address will Host A place in the destination address field of Ethernet frames destined for www.server?
00-1c-41-ab-c0-00
***** 00-0c-85-cf-65-c0
00-0c-85-cf-65-c1
00-12-3f-32-05-af

3. Which options are properties of contention-based media access for a shared media? (Choose three.)
***** non-deterministic
***** less overhead
one station transmits at a time
***** collisions exist
devices must wait their turn
token passing

4. What is true concerning physical and logical topologies?
The logical topology is always the same as the physical topology.
Physical topologies are concerned with how a network transfers frames.
Physical signal paths are defined by Data Link layer protocols.
***** Logical topologies consist of virtual connections between nodes.

5. What is true regarding media access control? (Choose three.)
***** Ethernet utilizes CSMA/CD
***** defined as placement of data frames on the media
contention-based access is also known as deterministic
802.11 utilizes CSMA/CD
***** Data Link layer protocols define the rules for access to different media
controlled access contains data collisions

ccna-1-modul8

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1. Which OSI layer is responsible for binary transmission, cable specification, and physical aspects of network communication?
Presentation
Transport
Data Link
***** Physical

2. An installed fiber run can be checked for faults, integrity, and the performance of the media by using what device?
light injector
***** OTDR
TDR
multimeter

3. Which characteristics describe fiber optic cable? (Choose two.)
***** It is not affected by EMI or RFI.
Each pair of cables is wrapped in metallic foil.
It combines the technique of cancellation, shielding and twisting to protect data.
It has a maximum speed of 100 Mbps.
***** It is the most expensive type of LAN cabling.

4. When is a straight-through cable used in a network?
when connecting a router through the console port
when connecting one switch to another switch
***** when connecting a host to a switch
when connecting a router to another router

5. Refer to the exhibit. Which type of Category 5 cable is used to make an Ethernet connection between Host A and Host B?
coax cable
rollover cable
***** crossover cable
straight-through cable

ccna-1-modul9

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1. In the graphic, Host A has reached 50% completion in sending a 1 KB Ethernet frame to Host D when Host B wishes to transmit its own frame to Host C. What must Host B do?
Host B can transmit immediately since it is connected on its own cable segment.
Host B must wait to receive a CSMA transmission from the hub, to signal its turn.
Host B must send a request signal to Host A by transmitting an interframe gap.
***** Host B must wait until it is certain that Host A has completed sending its frame.

2. Ethernet operates at which layers of the OSI model? (Choose two.)
Network layer
Transport layer
***** Physical layer
Application layer
Session layer
***** Data-link layer

3. Which of the following describe interframe spacing? (Choose two.)
***** the minimum interval, measured in bit-times, that any station must wait before sending another frame.
the maximum interval, measured in bit-times, that any station must wait before sending another frame.
the 96-bit payload padding inserted into a frame to achieve a legal frame size
the 96-bit frame padding transmitted between frames to achieve proper synchronization
***** the time allowed for slow stations to process a frame and prepare for the next frame.
the maximum interval within which a station must send another frame to avoid being considered unreachable

4. What three primary functions does data link layer encapsulation provide? (Choose three.)
***** addressing
***** error detection
***** frame delimiting
port identification
path determination
IP address resolution

5. When a collision occurs in a network using CSMA/CD, how do hosts with data to transmit respond after the backoff period has expired?
***** The hosts return to a listen-before-transmit mode. <—
The hosts creating the collision have priority to send data.
The hosts creating the collision retransmit the last 16 frames.
The hosts extend their delay period to allow for rapid transmission.

ccna-1-modul10

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1. Refer to the exhibit. A student working in the lab selects a cable that is wired as shown. Which connection types can successfully be made with this cable? (Choose two.)
connecting a PC to a router’s console port
***** connecting two routers together via their fast ethernet ports
connecting two switches together at gigabit speeds
connecting a PC to a switch at Gigabit Ethernet speeds
*****  connecting two devices with the same interface type at Fast Ethernet spee

2. Which option identifies the primary interface which would be used for initial configuration of a Cisco router?
AUX interface
Ethernet interface
serial interface
***** console interface

3. What makes fiber preferable to copper cabling for interconnecting buildings? (Choose three.)
***** greater distances per cable run
lower installation cost
***** limited susceptibility to EMI/RFI
durable connections
***** greater bandwidth potential
easily terminated

4. A network administrator is required to use media in the network that can run up to 100 meters in cable length without using repeaters. The chosen media must be inexpensive and easily installed. The installation will be in a pre-existing building with limited cabling space. Which type of media would best meet these requirements?
STP
***** UTP
coaxial
single-mode fiber
multimode fiber

5. What does the term “attenuation” mean in data communication?
***** loss of signal strength as distance increases
time for a signal to reach its destination
leakage of signals from one cable pair to another
strengthening of a signal by a networking device