CCNA 1 Chapter 2 (B)

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

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

CCNA 1 Chapter 4 (C)

1. Based on the transport layer header shown in the diagram, which of the following statements describe the established session? (Choose two.)
ans:
This contains a Telnet request.
This is a TCP header.

2. With TCP/IP data encapsulation, which range of port numbers identifies all well-known applications?
ans:
0 to 1023

CCNA 1 Chapter 5 (B)

1) In an IPv4 environment, what information is used by the router to forward data packets from one interface of a router to another?
ans:
destination network address

2) What information is added during encapsulation at OSI Layer 3?
ans:
source and destination IP address

CCNA 1 Chapter 6 (B)

1) How many bits make up an IPv4 address?
ans:
32

2) Refer to the exhibit. A network administrator has to develop an IP addressing scheme that uses the 192.168.1.0 /24 address space. The network that contains the serial link has already been addressed out of a separate range. Each network will be allocated the same number of host addresses. Which network mask will be appropriate to address the remaining networks?
ans:
255.255.255.192

CCNA 1 Chapter 7 (B)

1) Which IEEE specification defines Wi-Fi technology?
ans:
802.11

2) What is true regarding media access control? (Choose three.)
ans:
Ethernet utilizes CSMA/CD
defined as placement of data frames on the media
Data Link layer protocols define the rules for access to different media

CCNA 1 Chapter 8 (C)

1) What are the five elements that make up the fiber-optic cable?
ans:
core, cladding, buffer, strength material, and outer jacket

2) In a UTP crossover cable, which pairs of pins are crossed? (Choose two.)
ans:
1 and 2
3 and 6

CCNA 1 Chapter 9 (C)

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?
ans:
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.)
ans:
Physical layer
Data-link layer

CCNA 1 Chapter 10 (B)

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.)
ans:
connecting two routers together via their fast ethernet ports
connecting two devices with the same interface type at Fast Ethernet speeds

2) Which option identifies the primary interface which would be used for initial configuration of a Cisco router?
ans:
console interface

CCNA 1 Chapter 11 (C)

1. Refer to the exhibit. What command will place the router into the correct mode to configure an appropriate interface to connect to a LAN?

• UBAMA# configure terminal
• UBAMA(config)# line vty 0 4
• UBAMA(config)# line console 0
• UBAMA(config)# interface Serial 0/0/0
• xxUBAMA(config)# interface FastEthernet 0/1

2. In a Cisco router, when do changes made to the running-configuration take effect?

• after a system restart
• xxas the commands are entered
• when logging off the system
• when the configuration is saved to the startup-configuration

CCNA 1 Chapter 11 (B)

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
• xxconnecting two routers together via their fast ethernet ports
• xxconnecting 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 speeds

2. Which three statements are true about the role of routers in the network? (Choose three.)
• They propagate broadcasts.
• They enlarge collision domains.
• They segment broadcast domains.
• xxThey interconnect different network technologies.
• xxEach router interface requires a separate network or subnet.
• xxThey maintain a common frame format between LAN and WAN interfaces.

3. Refer to the exhibit. A network administrator has decided to use packet capture software to evaluate all traffic from the student subnet on the way to the Internet. To ensure that all packets are captured, what network device should be used to connect the monitoring station to the network between R1 and R2?
• xxrouter
• hub
• switch
• wireless access point

CCNA 1 Chapter 11

1. Users in the network are experiencing slow response time when doing file transfers to a remote server. What command could be issued to determine if the router has experienced any input or output errors?
show running-config
show startup-config
** show interfaces
show ip route
show version
show memory


2. Refer to the exhibit. A technician applies the configuration in the exhibit to a clean router. To verify the configuration, the technician issues the show running-config command in the CLI session with the router. What lines should the technician expect to see in the router output from the show running-config command?
enable password classline console 0password ccna
enable secret ciscoenable password classline console 0password ccna
enable secret 5 $1$v0/3$QyQWmJyT7zCa/yaBRasJm0enable password classline console 0password ccna
enable secret ciscoenable password 7 14141E0A1F17line console 0password 7 020507550A
** enable secret 5 $1$v0/3$QyQWmJyT7zCa/yaBRasJm0enable password 7 14141E0A1F17line console 0password 7 020507550A

CCNA 1 Chapter 10

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 speed

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

CCNA 1 Chapter 9 (B)

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.
• xxHost 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
• xxPhysical layer
• Application layer
• Session layer
• xxData-link layer

3. Which of the following describe interframe spacing? (Choose two.)

• xxthe 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
• xxthe 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

CCNA 1 Chapter 9

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

CCNA 1 Chapter 8 (B)

1. Which type of cable run is most often associated with fiber-optic cable?

• xxbackbone cable
• horizontal cable
• patch cable
• work area cable

2. In most business LANs, which connector is used with twisted-pair networking cable?

• BNC
• RJ-11
• xxRJ-45
• Type F

3. 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
• xxwhen connecting a host to a switch
• when connecting a router to another router
  

CCNA 1 Chapter 8

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.

CCNA 1 Chapter 7

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

CCNA 1 Chapter 6

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.

CCNA 1 Chapter 5

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.

CCNA 1 Chapter 4 (B)

1.Refer to the exhibit. What two pieces of information can be determined from the output that is shown? (Choose two.)
The local host is using well-known port numbers to identify the source ports.
**A termination request has been sent to 192.135.250.10.
**Communication with 64.100.173.42 is using HTTP Secure.
The local computer is accepting HTTP requests.
192.168.1.101:1042 is performing the three-way handshake with 128.107.229.50:80.

2. After a web browser makes a request to a web server that is listening to the standard port, what will be the source port number in the TCP header of the response from the server?
13
53
**80
1024
1728

3. Which information is found in both the TCP and UDP header information?
sequencing
flow control
acknowledgments
**source and destination