Elance CCNA Test Answers 2015



Calculate the number of usable networks and usable hosts for the network 210.106.14.0/24.
2 networks with 128 hosts
6 networks with 30 hosts
4 networks with 64 hosts
1 network with 254 hosts


Which is a valid ipv6 loopback Addresse?
FE00:/12
FF00::/10
::1
2000::/3


Routers that have flash memory typically have preloaded copy of Cisco IOS software. Which command should you use to make backup copy of the software image onto a network server?
Write Backup (server-name)
Save Copy TFTP
Copy backup 2 (server-name)
Write Backup TFTP
Copy Flash TFTP


What device hosts a different subnet on each interface
Hub
Switch
Router


How long is an IPv6 address?
64
128
124
32


Where is a hub specified in the OSI model?
Inner layer
Outer layer
Session layer
Physical layer


What does the Frame Relay switch use to distinguish between each PVC connection?
Data link connection identifier (DLCIs)
CNs
Local management interface LMI
FECNs


When designing a switch internetwork, one important consideration is the physical cabling distance. What is the maximum allowable distance of the 100BaseTX standard?
50 m
100 m
10 m
95 m
1000 m


What is the distance limitation for 100BaseT?
1000 feet
25 meters
185 meters
100 meters
607 feet


Which of these are NOT included in the lower layer of the OSI model?
Data Link
Application
Network
Physical


What is the connection-oriented protocol in the TCP/IP protocol stack?
UDP
OSPF
TCP
IP
DNS


Which protocol does Ping use?
TCP
ICMP
ARP
BootP


What protocol resolves IP addresses to MAC address?
ARP
TCP
UDP
NAT
RIP


Which class of IP address has the most host addresses available by default?
A
B
B and C
C


What does the command - routerA(config)#line cons 0 - allow you to perform next?
Shut down the router
Unleash the hounds
Disable console connections
Set your console password
Set the Telnet password


Which WLAN IEEE specification allows up to 54Mbps at 2.4GHz?
R
G
F
A


Which command sets IGRP as the routing protocol for autonomous system 100?
Router(config)# enable igrp 100
Router(config)# network 100
Router(config)# router igrp 100
Router(config)# igrp 100


How many collision domains are created when you segment a network with a 12-port switch?
1
5
12
2


Which router command allows you to view the entire contents of all access lists?
show all access-lists
show access-lists
show interface
show ip interface


Which of the following commands will allow you to set your Telnet password on a Cisco router?
line aux
line telnet
line vty
line con


Which layer of OSI does Switches operate ?
Data Link Layer
Network Layer
Session Layer
Physical Layer
Transport Layer


Which one of the following is true regarding VLANs?
VLANs are configured by default on all Cisco switches
VLANs only work if you have a complete Cisco switched internetwork. No off-brand switches are allowed
You should not have more than 10 switches in the same VTP domain
VTP is used to send VLAN information to switches in a configured VTP domain


DCLI is to frame relay as MAC is to:
Ethernet
PVC
LCI
None of these


What is the default administrative distance for a static route to a next-hop address?
5
90
1
20
0


Which network protocol does DNS use?
TFTP
SCP
FTP
UDP
(all of these)


Which information must a router have in order to perform proper and efficient routing?
Destination network address of an incoming packet
Number of other packets in a single flow of data
Destination application of an incoming packet
Number of routers that know a path to the destination


What is the extension of cisco IOS file?
.tar
.exe
.csco
.bin
.scr


What was the key reason the International Organization for Standardization released the OSI model?
The network administrator could increase the overall speed of their network
The industry could create a standard for how computers work
Different vendors networks could work with each other
Users could access network server faster


What is the bit length and expression form of a MAC address?
48 bits expression as a decimal number
24 bits expression as a hexadecimal number
24 bits expression as a decimal number
48 bits expression as a hexadecimal number
36 bits expression as a binary number


An Ethernet term used to describe a network collection of devices in which one particular device sends a packet on a network segment and forces all other devices on that same segment to pay attention to it is called a:
Hop count
Collision domain
Window
Three-way handshake


How are frame relay virtual circuits Identified?
VPI
CIR
SPID
DLCI
MAC


How often are BPDUs sent from a layer 2 device?
Always
Every 10 minutes
Every 2 minutes
Every 2 seconds


In practical IPv6 application, The encapsulation of IPv6 packets inside IPv4 packets is called what?
routing
hashing
NAT
tunneling


While performing the password recovery procedure on your 2500 series Cisco router, you type in the following command. o/r0x2142 What is the purpose of this command?
It is used to restart the router
It is used to bypass the configuration in NVRAM
It is used to save the changes to the configuration
It is used to view the lost password
It is used to enter ROM Monitor mode


Routing protocols can be generally classified into distance-vector or link-state. Each method has its own advantages and disadvantages. Which of the following routing protocol takes the benefits of both methods?
EIGRP
IS-IS
OSPF
RIP
IGRP


A routing table contains static, RIP, and IGRP routes for the same destination network. Which route would normally be used to forward data?
The static route
The IGRP route
The RIP route
All three will load balance


Which statement about switched and routed data flow is correct?
Switches create separate collision domains and separate broadcast domains. Routers provide separate collision domains
Switches create a single collision domain and a separate broadcast domain. Router provides a separate broadcast domain as well
Switches create separate collision domains but a single broadcast domain. Routers provide a separate broadcast domains
Switches create a single collision domain and a single broadcast domain. Routers provide separate broadcast domains


What does a VLAN do?
Provides multiple collision domains on one switch port
Provides multiple broadcast domains within a single collision domain
Breaks up broadcast domains in a layer 2 switch internetwork
Acts as the fastest port to all servers


Which command enables directly connected network 199.55.72.0 to be used by RIP?
Router(Config-router)# network 199.55.0.0
Router(Config-router)# rip 199.55.72.0
Router(Config-router)# network 199.55.72.0
Router(Config)# rip 199.55.0.0


Which protocol is used to send a destination network unknown message back to originating hosts?
BootP
ARP
TCP
ICMP


What is the administrative distance of OSPF?
110
120
170
90
100


What command can you type to view the connections after telneting into multiple routers simultaneously?
sh sessions
sh ports
sh host
sh users
sh connections


If user response drops as a network continues to grow, what should you do?
Block the most inactive IP addresses
Segment the network
Upgrade to a newer switch
Create a new broadcast domain


What is the effect of using the service password-encryption command?
Only the enable password will be encrypted.
Only passwords configured after the command has been entered will be encrypted.
Only the enable secret password will be encrypted.
It will encrypt all current and future passwords.


Which parameter must be supplied when initializing the IGRP routing process?
Metric weights
An autonomous system number
Connected network numbers
A registered administrative id
An IP address mask


Which switch would STP choose to become the root bridge in the selection process?
D. 32769: 22-33-44-55-66-78
A. 32768: 11-22-33-44-55-66
B. 32768: 22-33-44-55-66-77
C. 32769: 11-22-33-44-55-65


Which IOS command is used to configure encapsulation for a PPP serial link on a Cisco Router?
encapsulation ppp-synch
encapsulation ppp
ip encapsulation ppp
encapsulation ip ppp


What is a stub network?
A network with more than one exit and entry point
A network with only one entry and no exit point
A network that has only one entry and exit point
A network with more than one exit point


What does the 'passive' command provide to the RIP dynamic routing protocol?
Stops an interface from sending periodic dynamic updates but not from receiving updates
Stops the router from sending any dynamic updates
Stops the router from receiving any dynamic updates
Stops an interface from sending or receiving periodic dynamic updates


How many broadcast domains are created when you segment a network with a 12-port switch?
3
4
12
1


what is one benefit of PVST+?
PVST+ automatically selects the root bridge location, to provide optimize.
PVST+ allows the root switch location to be optimized per VLAN
PVST+ supports layer3 load balancing without loops.
PVST+ reduces the CPU cycles for all the switches in the network.


What layer in the OSI model is responsible for data segmentation?
Transport
Physical
Network
Data Link


what factor determines the OSPF router ID.
The highest IP address of any Physical Interface
The lowest IP address of any physical interface.
The highest IP address of any Loop Back Interface
The lowest IP address of any logical interface


What command will display the line, protocol, DLCI, and LMI information of an interface?
show interface
sh pvc
sho runn
show frame-relay pvc


Which of the following key factors are categorized as metrics?
Hops
All of these
Bandwidth
Ticks


Which layer in the OSI model provides error checking?
Session
Data-Link
Presentation
Physical
Transport


How does a bridge function?
It maintains a table of the IP address of the host connected to its internet segment
It passes packets outside of its network segment if its IP address cannot be found on its table
It maintains the table of the data link layer and network layer addresses for the host connected to its network segment
It looks up the frames destination in its address table and sends the frame towards the destination


If you wanted to delete the configuration stored in NVRAM, what would you type?
delete nvram
erase nvram
erase running
erase startup


A router has learned three possible routes that could be used to reach a destination network. One route is from EIGRP and has a composite metric of 20684570. Another route is from OSPF with a metric of 852. The last is from RIPv2 and has a metric of 4. Which route or routes will the router install in the routing table?
the EIGRP route
the RIPv2 route
OSPF and RIPv2 routes
all three routes
the OSPF route


What flavor of Network Address Translation can be used to have one IP address allow many users to connect to the global Internet?
PAT
Static
NAT
Still


Which router command allows you to determine whether an IP access list is enabled on a particular interface?
show ip list
show access list
show access interface
show ip interface


Which of the following is a process of putting a packet for a destination network not having an entry in the routing table, on to the next hop router?
Dynamic Routing
Default routing
Static Routing
Double Routing


What is the role of a destination port number?
To assign priorities to services.
To allow or forbid network access.
To track different conversations and distinct services.
To address the network devices.


You want to verify the configuration register entry of a Cisco 2500 series router. What command would you use on the router?
show flash
show version
show config-reg
show running-config
show register


Link Access Procedure, Balanced (LAPB), is the protocol designed to ensure that the frames are error-free and properly sequenced in what type of network?
Internet
None of these
ARPANET
X.25


During encapsulation in which order is information packaged?
Packet, Data, Segment, Frame
Data, Packet, Segment, Frame
Segment, Data, Packet, Frame
Data, Segment, Packet, Frame


Your Ethernet network, 172.30.1.0, shuts down. Which update message is seen in your router's debug IP rip output regarding that network?
subnet 172.30.1.0, metric 1
subnet 172.30.1.0, metric 16
subnet 172.30.1.0, metric 0
subnet 172.30.1.0, metric 15


Which router component stores routing tables, ARP cache, and packet buffers?
ROM
NVRAM
Flash memory
RAM


Which command displays the interfaces using a given access list?
Show IP interface
Show active list
Configure IP access list
Show access-list interfaces
Show interface parameters


Which network mask should you place on a class C address to accommodate a user requirement for five networks with a maximum of 17 hosts on each network?
255.255.255.192
255.255.255.240
255.255.255.248
255.255.255.224


What is the difference between a bridge and a switch?
A bridge is ASIC based and a switch is software based
A bridge is RISC based and a switch is ASIC based
A bridge is software based and a switch is ASIC based
A bridge is software based and a switch is CISC based


What is an advantage of local area network LAN segmentation?
Decrease cost of implementation
Elimination of broadcast
Larger number of users within the same domain
Smaller collision domains


The RSTP provides which new port role?
Disabled
Discarding
Enabled
Forwarding


A switch has been configured with two vlans and is connected to a router with a trunk for inter-vlan routing. OSPF has been configured on the router,as the routing protocol for the network. Which statement about this network is true?
Direct inter-vlan communication does not require OSPF.
For the two vlans to communicate,a network statement for the trunk interface needs to be added to the OSPF configuration.
For the two vlans to communicate,a network statement for each subinterface needs to be added to the OSPF configuration.
OSPF cannot be used if router-on-a-stick is configured on the router.


In the IPv6 address structure, how many bits are included in each field?
64
24
4
16
128


For a window size of 3, the ack4 signal will say to send the _____ packet.
None of these
4th
2nd
3rd


You work as a network technician for smarterer and are responsible for this network. You have chosen WPA over WEP in the wireless network. What is one reason why WPA is preferred over WEP?
The values of WPA keys can change dynamically while the system is used
The access point and the client are manually configured with different WPA key values
WPA key values remain the same until the client configuration is changed.
A WPA key is longer and requires more special characters than the WEP key


Which attribute is unique to Cisco's implementation of BGP?
AS-Path
MED
Weight
Local-Preference


True or False? MAC addresses are the feature of the physical layer.
True
False


How many subnets and usable hosts are in the network 198.25.75.8.0/29?
128 subnets, 2 hosts
6 subnets, 32 hosts
32 subnets, 6 hosts
6 subnets, 30 hosts
32 subnets, 8 hosts


Which of the following is the valid host range for the subnet on which the IP address 192.168.168.188 255.255.255.192 resides?
192.168.168.129–190
192.168.168.129–199
192.168.168.128–190
192.168.168.128–194


Which device is commonly used as Data Terminal Equipment?
ISDN
CSU/DSU
Modem
router


What PPP protocol provides for dynamic addressing, authentication, and multilink?
NCP
HDLC
LCP
X.25


A default Frame Relay WAN is classified as what type of physical network?
nonbroadcast multipoint
point-to-point
broadcast point-to-multipoint
nonbroadcast multi-access
broadcast multi-access


From which IP address class can 15 bits be borrowed to create subnets?
C
E
A
D
B


What Protocol Does PPP use to identify the Network layer protocol?
ISDN
LCP
NCP
X.25


If a router receives an OSPF external and EIGRP external route for the same prefix, which route will be installed in the routing table.
Depends on the age of the route
EIGRP
OSPF
BOTH
NONE


From the seven OSI layers, which layer is responsible for error recovery and reliability?
Application
Data-Link
Network layer
Session
(all of these)


What does the term ‘Base’ refer to in 100BaseT?
Cabling type
Signaling type
Speed category
Spectrum used
100 mode type


What is the purpose of Inverse ARP?
To map a known DLCI to an IP address
E. to map a known IP address to a SPID
C. to map a known MAC address to an IP address
B. to map a known DLCI to a MAC address
A. to map a known IP address to a MAC address


When you issue the command "Show Version," your router returns: “Configuration register is 0x0101” From where does the router boot?
NVRAM
ROM
A TFTP server
FLASH


What is the maximum number of subnets that can be assigned to networks when using the address 172.16.0.0 with a subnet mask of 255.255.240.0? (Assume older version UNIX workstations are in use.)
14
16
It is an invalid subnet mask for the Network
32
30


What is the primary advantage of both bridging and switching?
Encryption
Upper layer protocol transparency
Lower layer protocol transparency
Bridging and switching have different advantages


Three access points have been installed and configured to cover a small office. What term defines the wireless topology?
ESS
SSID
BSS
IBSS


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