CCNA 4 - Voucher

THIS EXAM IS (80%)



What is accomplished by segmenting a LAN with a bridge?

*increase large collision domains

reduce large collision domains

reduce small broadcast domains

increase small broadcast domains



2
How many Telnet sessions can take place simultaneously on a router running a standard edition of the IOS?
4
*5
8
10



3
What is a disadvantage of cut-through switching?

*no error checking

a decrease in error checking

decrease in number of collision domains

decrease in bandwidth

increased latency



4
Which of the following are data link layer encapsulation details? (Choose two.)

*Packets are put into frames.

Data is packaged into a packet.

Data is segmented into segments.

Data is converted for Internet travel.

*An address is added to identify the directly connected device.



5
Select the characteristics specified by 10BaseT. (Choose three.)

*twisted pair cable

T style connectors

*baseband transmission

10 gigabits per second data rate

*10 megabits per second data rate

decimal encoded data transmission



6
A LAN is to be added to an unused router Ethernet interface. What steps must be performed to configure this interface to allow connectivity to the hosts on this LAN? (Choose two.)

*Enter the command no shutdown.

A password must be set on the interface.

The interface DCE clock rate must be set.

The interface must be configured for virtual terminal access.

*The interface must be configured with an IP address and subnet mask.

The router must be put in setup mode in order for the interface to be configured.



7
Which media types can be used in an implementation of a 10BASE-T network? (Choose three.)

Category 5 UTP *
Category 5e UTP *
Category 3 UTP *
coaxial cable
multi-mode fiber
single mode fiber


8
If 4 bits are borrowed from the host field of a Class C address to create subnets, what will the range of usable host addresses be in the last subnet?

.224 to .239

.225 to .239

.225 to .254

.241 to .254

.241 to .255

*.240 to .255



9
Which of the following describe how a device on a LAN builds a table of MAC addresses? (Choose two.)

by monitoring the traffic that occurs on the local network segment

*via FTP from the nearest router

*by sending a request to the nearest domain name server

by broadcasting an ARP request



10
Which of the following best describes how the Gigabit Ethernet, Media Access Control method views the link?

ring
shared bus
point-to-point *
star
extended star



11
What is the purpose of Positive Acknowledgment and Retransmission (PAR)?

PAR allows the presentation layer to request that data be resent in a format the destination host can process.

PAR provides a mechanism for the receiving device to request that all segments be retransmitted if one segment is corrupt.

*PAR helps ensure that a number of data segments sent by one host are received by another host before additional data segments are sent.

PAR is used to renegotiate the window size during the synchronization process.



12
Which criteria identify a Class B address? (Choose two.)

decimal number in first octet between 127-191

decimal number in first octect between 128-192

*decimal number in first octect between 128-191

first bit of binary IP address is 0

*first two bits of binary IP address are 10

first three bits of IP binary address are 110



13
An administrator has made routing protocol changes to a router's configuration. To ensure that the changes are implemented, the active configuration is saved and the router is reloaded. After the router has initialized, the output on the screen displays "Would you like to enter the initial configuration dialog?[yes/no]:" Why did this dialog appear?

There was a POST failure.

The incorrect IOS loaded.

There was an error in the startup configuration file.

*The configuration register was set to ignore NVRAM.



14
What operations are performed during router initialization? (Choose three.)

*The IOS is loaded into RAM.

The generic bootstrap loader tests all interfaces.

All directly connected network devices are identified.

*A valid configuration file is loaded from NVRAM if specified by the configuration register.

*A question driven setup menu is presented if a valid configuration file cannot be loaded.



15
For a network manager planning the installation of a new network, which of the following will be needed to implement a typical 10BASE-T network installation? (Choose three.)

RJ-11
BNC connectors
RJ-48 patch cables
RJ-45 connectors *
Category 5 UTP cables *
hubs or switches *


16. A company with a Class B license needs to have a minimum of 1,000 subnets with each subnet capable of accommodating 50 hosts. Which mask below is the appropriate one?

255.255.0.0

255.255.240.0

255.255.255.0

*255.255.255.192

255.255.255.224



17
A network administrator can establish a remote session to a host using the Router> telnet 192.168.1.1 command but is unsuccessful when using the Router> telnet Boston command to connect to the same interface. Which of the following could be the problem? (Choose two.)

*The ip host table on the router is not configured.

The command telnet Boston was issued from the wrong router prompt.

The routing table is missing.

*Domain name services are not available.



18
Which of the following network components would be considered Layer 1 devices? (Choose three.)

*hub

router

bridge

switch

*repeater

*transceiver



19
What is the maximum distance that 10BASE-T will transmit data before signal attenuation affects the data delivery?

*100 meters

185 meters

300 meters

500 meters



20
What is the result of executing the erase startup-config command?

It deletes the active configuration file from RAM.

*It deletes the backup configuration file in NVRAM.

It deletes the saved configuration file from ROM.

It deletes the saved configuration file from the C: drive.



21
Which of the following imposes boundaries on broadcast traffic?

Bridge

Repeater

*Router

Transceiver



22
Which utility shows the route a packet takes to reach its destination?

netstat

ping

Telnet

*traceroute



23
Which device is considered a multi-port bridge?

hub

router

*switch

gateway

transceiver

repeater



24
What organization developed the TCP/IP reference model?

Internet Engineering Task Force (IETF)
National Intstitute of Standards and Technology (NIST)
Department of the Navy (DoN)
Department of Defense (DoD) *
Massachusetts Institute of Technology (MIT)
Stanford University



25 Which of the following is true regarding CDP and the graphic shown?

CDP running on Router D will gather information about routers A, B, C, and E.

By default, Router A will receive CDP advertisements from routers B and C.

*If routers D and E are running different routing protocols, they will not exchange CDP information.

Router E can use CDP to identify the IOS running on Router B.



26
How would an administrator configure a static route for use if a primary route failed?

configure the route with a metric greater than the default value

configure the route and the router will activate it as needed

configure the route to activate by using the redistribute static command

*configure the route with an administrative distance greater than the default value



27
Convert the Hexadecimal number A2 into its Base 10 equivalent. Select the correct answer from the list below.

156

158

160

*162

164

166



28
*What happens on an Ethernet network after a collision occurs? (Choose three.)

A backoff algorithm is invoked and transmission is stopped.

Devices involved in the collision have a random period of time for priority retransmission of the damaged packet.

The devices involved in the collision release a token indicating the time each station may begin retransmitting.

*The devices involved in the collision do not have priority to transmit data.

*The devices with data to transmit return to a listen-before-transmit mode.

Transmit work will restart with the reissuance of all data.



29
Which of the following types of networks pass a token sequentially to each host? (Choose two.)

Ethernet

*Token Ring

*FDDI

Frame Relay

ISDN



30
What is the length of a MAC address?

8 bits

8 bytes

24 bits

24 bytes

*48 bits

48 bytes


31 Which of the following are TCP services? (Choose three.)

address resolution

end-to-end communication

*flow control

reliability of data delivery

path determination

*data representation



32
Routers have different types of memory. Choose the answer that describes RAM.

provides working storage

*stores a fully functional IOS image

stores the startup configuration file

initializes the code used in router startup



33
Which command will display routing table information about all known networks and subnetworks?

Router# show ip interfaces

Router# show ip connections

*Router# show ip route

Router# show ip networks



34
Which of the following statements describe distance vector routing updates? (Choose three.)

Topology changes are transmitted to all routers at once.

Routers send their entire routing tables in distance vector updates.

*Path cost metrics for each route are included in the updates.

Periodic updates are sent directly to every router in the network.

*Routing updates are sent periodically to adjacent routers.

*Routers send only the state of their own links in distance vector updates.



35
Which ICMP message type notifies source hosts that a receiving host or network is not available?

time exceeded

redirect

*destination unreachable

source quench

parameter problem

echo reply



36
How many total subnets are created by applying the subnet mask 255.255.252.0 to a Class B network?

4

6

*64

252

255

1024



37
Which of the following conditions will cause a router using holddown timers to ignore an update?

an update from a different router with a better metric

an update from a different router with a poorer metric

an update from the same router with a better metric

*an update from the same router with a poorer metric



38
Which IP packet field will prevent endless loops?

type-of-service

identification

flags

*time-to-live

header checksum



39
Which of the following is a network type that is widely used in dialup networking?

shared media

point-to-point

extended shared media

*point-to-multipoint



40
When a network administrator applies the subnet mask 255.255.255.248 to a Class A address, for any given subnet, how many IP addresses are available to be assigned to devices?

1022

510

254

126

30

*6



41
Cisco Discovery Protocol (CDP) operates at which OSI Layer?

physical layer

network layer

*data link layer

presentation layer



42
Which protocol can be used to load or retrieve Cisco IOS images to or from a router?

SNMP

*TFTP

UDP

TCP



43
Which of the following is a transport layer protocol of the TCP/IP model?

FTP

*UDP

IP

TFTP



44
Which of the following is created with switched full-duplex transmission?

more collision domains

fewer collision domains

*no collision domains

no increase in broadcast domains

more broadcast domains



45
Which of the following IP addresses are broadcast addresses if the subnet mask is 255.255.255.240? (Choose three.)

*75.32.75.15

205.16.35.11

*199.254.129.111

*129.130.17.143

135.22.55.93

105.33.62.213


46 What type of routing uses information that is manually entered into the routing table?

dynamic

interior

*static

standard



47
What is used to resolve known IP addresses to unknown MAC addresses?

*ARP

DNS

DHCP

RARP



48
Which of the following OSI layers offers reliable, connection-oriented data communication services?

session

*transport

network

data link



49
Which of the following are benefits of creating a subnetwork structure in an IP network? (Choose three.)

permits network address duplication

*allows for address flexibility

*prevents address replication

provides broadcast containment

*adds low-level security

allows for more network hosts available



50
How many IP addresses can be assigned to host devices on each subnet of a Class B network with a subnet mask of 255.255.255.248?

3

5

6

8

30

8190???? mayby that



51
After a Telnet session has been suspended, which actions will restart the session? (Choose two.)

pressing Enter to restart the most recent session

using the resume command followed by a session ID

*typing the session ID followed by pressing Enter

*using the resume command followed by the IP address



52
Which layer of the OSI model covers physical media?

*Layer 1

Layer 2

Layer 3

Layer 4

Layer 5

Layer 6



53
Which protocol is used by FTP to transfer files over the Internet?

*TCP

SMTP

UDP

SNMP



54
Which of the following factors should be considered when selecting a routing protocol to be implemented in an enterprise network? (Choose three.)

*bandwidth consumption

*router memory requirements

router location

spanning tree size

*router processor capability

flow control capability



55


A ping 192.1.1.20 command is issued on workstation A to determine if workstation B can be reached. What events will occur if this command is successful? (Choose two.)

*The router will block the ping request message.

The router will reply to the echo request with a proxy ping response.

Workstation A will send a UDP ping request message to workstation B.

Workstation B will send a UDP ping reply message to workstation A.

*Workstation A will send an ICMP echo request message to workstation B.

Workstation B will send an ICMP echo reply message to workstation A.



56
Which mode will a router enter if it is unable to locate a valid startup configuration file during the boot process?

Boot mode

Config mode

Setup mode

Startup mode



57
Which protocol of the TCP/IP model internet layer provides connectionless, best-effort-delivery of datagrams?

ARP

ICMP

IP

RARP

*TCP

DNS



58
Which of the following does a router use to make a forwarding decision?

*destination IP address

MAC address

source IP address

encapsulation address

default gateway



59
Routers have different types of memory. Choose the answer that describes NVRAM.

provides working storage

*stores a fully functional IOS image

stores the startup configuration file

initializes the code that is used to boot the router



60
Which statement is correct concerning routing and routed protocols?

A routed protocol allows the routers to communicate with other routers and maintain tables for a routing protocol.

A routing protocol allows routers to communicate with other routers and maintain tables for a routed protocol.

*Routers only need to use routing protocols to work properly.

There is no difference between routed and routing protocols.