Exam 200-125:CCNA Cisco Certified Network Associate CCNA (v3.0), exam 200-125 training materials and study guide materials
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Here are some demo for you to have a reference:
NEW QUESTION: 1
If a host experiences intermittent issues that relate to congestion within a network while
remaining connected, which option could cause congestion on this LAN?
A. multicasting
B. network segmentation
C. half-duplex operation
D. broadcast storms
Answer: D
NEW QUESTION: 2
Scenario:
You are a junior network engineer for a financial company, and the main office network is
experiencing network issues. Troubleshoot the network issues.
Router R1 connects the main office to the internet, and routers R2 and R3 are internal routers.
NAT is enabled on router R1.
The routing protocol that is enabled between routers R1, R2 and R3 is RIPv2.
R1 sends the default route into RIPv2 for the internal routers to forward internet traffic to R1.
You have console access on R1, R2 and R3 devices. Use only show commands to troubleshoot the
issues.
Why applications that are installed on PC's in R2 LAN network 10.100.20.0/24 are unable to
communicate with server1?
A. A standard ACL statement that is configured on R1 is blocking the traffic sourced from R2 LAM
network
B. A standard ACL statement that is configured on R2 is blocking the traffic sourced from R2 LAN
network.
C. A standard ACL statement that is configured on R1 is blocking the traffic sourced from Server1
network.
D. A standard ACL statement that is configured on R2 is blocking the traffic sourced from Setver1
network.
Answer: D
Explanation:
Check the below now:
NEW QUESTION: 3
Which two actions must you take to configure a PAgP EthernetChannel between two
switches, S1 and S2? (Choose two.)
A. Configure thechannel-group 1 mode activecommand on S2.
B. Configure thechannel-group 1 mode activecommand on S1.
C. Configure thechannel-group 1 mode oncommand on S2.
D. Configure thechannel-group1 mode desirablecommand on S2.
E. Configure thechannel-group 1 mode autocommand on S1.
Answer: D,E
NEW QUESTION: 4
Which command should you enter to configure a device as an NTP sever?
A. ntp authenticate
B. ntp sever
C. ntp peer
D. ntp master
Answer: C
https://www.cisco.com/c/en/us/td/docs/switches/datacenter/nexus5000/sw/system_management/
503_n1_1/b_cisco_n5k_system_mgmt_cg_rel_503_n1_1/b_cisco_n5k_system_mgmt_cg_rel_503_n
1_1_c hapter_010000.pdf
NEW QUESTION: 5
Which task do you need to perform first when you configure IP SLA to troubleshoot a
network connectivity issue?
A. Enable the ICMP echo operation.
B. Specify the test frequency
C. Verify the ICMP echo operation
D. Schedule the ICMP echo operation.
Answer: A
NEW QUESTION: 6
Which port security violation mode allows traffic from valid mac address to pass but block
traffic from invalid mac address?
A. shutdown vlan
B. shutdown
C. protect
D. restrict
Answer: C
NEW QUESTION: 7
A workstation has just resolved a browser URL to the IP address of a server. Which protocol
will the workstation now use to determine the destination MAC address to be placed into frames
directed toward the sever?
A. ARP
B. HTTP
C. DHCP
D. DNS
E. RARP
Answer: A
NEW QUESTION: 8
Which command should you enter to configure a DHCP client?
A. ip helper-address
B. ip dhcp pool
C. ip dhcp client
D. ip address dhcp
Answer: C
NEW QUESTION: 9
Which three are valid modes for a switch port used as a VLAN trunk? (Choose three.)
A. desirable
B. blocking
C. forwarding
D. transparent
E. auto
F. on
Answer: A,E,F
Explanation:
These are the different types of trunk modes:
ON: This mode puts the port into permanent trunk mode and negotiates to convert the link into a
trunk link. The port becomes a trunk port even if the adjacent port does not agree to the change.
OFF: This mode puts the port into permanent non-trunk mode and negotiates to convert the link into
a non-trunk link. The port becomes a non-trunk port even if the adjacent port does not agree to the
change.
Desirable: This mode causes the port to actively attempt to convert the link into a trunk link. The port
becomes a trunk port if the adjacent port is set to on, desirable, or auto mode.
Auto: This mode enables the port to convert the link into a trunk link. The port becomes a trunk port
if the adjacent port is set to on or desirable mode. This is the default mode for Fast and Gigabit
Ethernet ports.
Nonegotiate: This mode puts the port into permanent trunk mode, but does not allow the port to
generate Dynamic Trunking Protocol (DTP) frames. The adjacent port must be configured manually as
a trunk port to establish a trunk link.
NEW QUESTION: 10
Which two design models can you use to deploy DMVPN? (Choose two)
A. WAN aggregation
B. DMVPN backup dedicated
C. DMVPN only
D. Internet VPN
E. dual DMVPN
F. DMVPN backup shared
Answer: C,E
NEW QUESTION: 11
Refer to the exhibit. Which option describes how SwitchA will handle the frame just received?
A. It will flood the frame out all ports.
B. It will flood the frame out of all the ports except Fa0/3.
C. It will forward the frame out of port Fa0/6 only.
D. It will forward the frame out of portFa0/3 only.
E. It will drop the frame.
Answer: C
NEW QUESTION: 12
DRAG DROP
Drag and drop the BGP terms from the left onto the correct descriptions on the right
Answer:
external BGP = peers are in different autonomous systems (AS)
internal BGP = peers are in the same autonomous systems
Autonomous System = separate network operating within one administrative domain Private
autonomous system (AS)= numbers which range from 64512 to 65535 Public AS = between 1 and
64511 Prefix = block of ip addresses
NEW QUESTION: 13
What is the simplest IP SLA operation that can measure end-to-end response time between
devices?
A. ICMP echo
B. ICMP path jitter
C. ICMP Jitter
D. ICMP path echo
Answer: C
NEW QUESTION: 14
When is the most appropriate time to escalate an issue that you are troubleshooting?
A. when a more urgent issue that requires your intervention is detected.
B. When you lack the proper resources to resolve the issue.
C. when you have gathered all available information about the issue.
D. When you have been unable to resolve the issue after 30 min
Answer: D
NEW QUESTION: 15
Which statement describes the effect of the exec-timeout 30 command?
A. The router maintains a user session indefinitely after it is active for 30 minutes.
B. The router disconnects the user session if it is inactive for 30 minutes.
C. The router maintains a user session indefinitely after it is active for 30 seconds.
D. The router disconnects a user session if it is inactive for 30 seconds.
Answer: B
NEW QUESTION: 16
DRAG DROP
Drag and drop the DNS lookup components from the left onto the correct functions on the right.
Answer:
NEW QUESTION: 17
Which command can you enter to display duplicate IP addresses that the DHCP server assigns?
A. show ip dhcp database 10.0.2.12
B. show ip dhcp server statistics
C. show ip dhcp conflict 10.0.2.12
D. show ip dhcp binding 10.0.2.12
Answer: D
NEW QUESTION: 18
Which networking Technology is currently recognized as the standard for computer
networking?
A. System network architecture
B. Transmission control protocol/Internet protocol
C. Open network architecture
D. Open system Interconnect
Answer: B
NEW QUESTION: 19
Which statement about NTP is true?
A. The default authentication key number is 1.
B. The default stratum number is 5.
C. Each device is enabled as a server by default and propagates NTP messages to all peers on its
default LAN.
D. The default source address of an NTP message is the interface connected to the next-hop for the
server peer address.
Answer: D
NEW QUESTION: 20
When is a routing table entry identified as directly connected?
A. when the local router is in use as the network default gateway
B. when the network resides on a remote router that is physically connected to the local router
C. when an interface on the route is configure with an ip address and enabled
D. when the route is statically assigned to reach a specific network
Answer: C
NEW QUESTION: 21
which option is the correct CIDR notation for 192.168.0.0 subnet 255.255.255.252?
A. /30
B. /31
C. /32
D. /29
Answer: A
NEW QUESTION: 22
which value indicate the distance from the ntp authoritative time source?
A. Priority
B. Stratum
C. Location
D. layer
Answer: B
NEW QUESTION: 23
Which two neighbor types are supported in a BGP environment? (Choose two)
A. remote
B. directly attached
C. internal
D. external
E. autonomous
Answer: C,D
NEW QUESTION: 24
Which three statements about Syslog utilization are true? (Choose three.)
A. Utilizing Syslog improves network performance.
B. There are more Syslog messages available within Cisco IOS than there are comparable SNMP trap
messages.
C. The Syslog server automatically notifies the network administrator of network problems.
D. A Syslog server provides the storage space necessary to store log files without using router disk
space.
E. Enabling Syslog on a router automatically enables NTP for accurate time stamping.
F. A Syslog server helps in aggregation of logs and alerts.
Answer: B,D,F
Explanation:
The Syslog sender sends a small (less than 1KB) text message to the Syslog receiver. The Syslog
receiver is commonly called "syslogd," "Syslog daemon," or "Syslog server." Syslog messages can be
sent via UDP (port 514) and/or TCP (typically, port 5000). While there are some exceptions, such as
SSL wrappers, this data is typically sent in clear text over the network. A Syslog server provides the
storage space necessary to store log files without using router disk space.
In general, there are significantly more Syslog messages available within IOS as compared to SNMP
Trap messages. For example, a Cisco Catalyst 6500 switch running Cisco IOS Software Release
12.2(18)SXF contains about 90 SNMP trap notification messages, but has more than 6000 Syslog
event messages.
System logging is a method of collecting messages from devices to a server running a syslog daemon.
Logging to a central syslog server helps in aggregation of logs and alerts. Cisco devices can send their
log messages to a UNIX-style syslog service. A syslog service accepts messages and stores them in
files, or prints them according to a simple configuration file.
Reference: http://www.cisco.com/c/en/us/products/collateral/services/high-
availability/white_paper_c11-557812.html
NEW QUESTION: 25
While troubleshooting a connection problem on a computer, you determined that the
computer can ping a specific web server but it cannot connect to TCP port 80 on that server. Which
reason for the problem is most likely true?
A. A VLAN number is incorrect.
B. A Route is missing
C. An ARP table entry is missing.
D. An ACL is blocking the TCP port.
Answer: D
NEW QUESTION: 26
which two statements about data vlans on access ports are true ?
A. They can be configured as host ports
B. 802.1Q encapsulation must be configured on the interface
C. Exactly one vlan can be configured on the interface
D. Two or more vlans can be configured on the interface
E. they can be configured as trunk ports
Answer: A,C
Reference:
