[Free] 2017(July) EnsurePass Examcollection Cisco 200-125 Dumps with VCE and PDF 191-200

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CCNA Cisco Certified Network Associate CCNA (v3.0)

Question No: 191 – (Topic 5)

Refer to the exhibit.

image

What is the cause of the Syslog output messages?

  1. The EIGRP neighbor on Fa0/1 went down due to a failed link.

  2. The EIGRP neighbor connected to Fa0/1 is participating in a different EIGRP process, causing the adjacency to go down.

  3. A shut command was executed on interface Fa0/1, causing the EIGRP adjacency to go down.

  4. Interface Fa0/1 has become error disabled, causing the EIGRP adjacency to go down.

Answer: C Explanation:

The first lines of the message show that a configuration change was made, and that the fa0/1 interface changed to a state of administratively down. This can only be done by issuing the shutdown command. The last line indicates that this caused an EIGRP neighbor adjacency to go down.

Question No: 192 – (Topic 5)

Refer to the exhibit.

image

The Bigtime router is unable to authenticate to the Littletime router. What is the cause of the problem?

  1. The usernames are incorrectly configured on the two routers.

  2. The passwords do not match on the two routers.

  3. CHAP authentication cannot be used on a serial interface.

  4. The routers cannot be connected from interface S0/0 to interface S0/0.

  5. With CHAP authentication, one router must authenticate to another router. The routers cannot be configured to authenticate to each other.

Answer: B Explanation:

With CHAP authentication, the configured passwords must be identical on each router. Here, it is configured as little123 on one side and big123 on the other.

Question No: 193 – (Topic 5)

A national retail chain needs to design an IP addressing scheme to support a nationwide network. The company needs a minimum of 300 sub-networks and a maximum of 50 host addresses per subnet. Working with only one Class B address, which of the following subnet masks will support an appropriate addressing scheme? (Choose two.)

A. 255.255.255.0

B. 255.255.255.128

C. 255.255.252.0

D. 255.255.255.224

E. 255.255.255.192

F. 255.255.248.0

Answer: B,E Explanation:

Subnetting is used to break the network into smaller more efficient subnets to prevent excessive rates of Ethernet packet collision in a large network. Such subnets can be arranged hierarchically, with the organization#39;s network address space (see also Autonomous System) partitioned into a tree-like structure. Routers are used to manage traffic and constitute borders between subnets.

A routing prefix is the sequence of leading bits of an IP address that precede the portion of the address used as host identifier. In IPv4 networks, the routing prefix is often expressed as a quot;subnet maskquot;, which is a bit mask covering the number of bits used in the prefix. An IPv4 subnet mask is frequently expressed in quad-dotted decimal representation, e.g., 255.255.255.0 is the subnet mask for the 192.168.1.0 network with a 24-bit routing prefix (192.168.1.0/24).

Question No: 194 – (Topic 5)

Refer to the exhibit.

image

What is the most efficient summarization that R1 can use to advertise its networks to R2?

A. 172.1.0.0/22 B. 172.1.0.0/21 C. 172.1.4.0/22 D. 172.1.4.0/24 172.1.5.0/24

172.1.6.0/24

172.1.7.0/24

E. 172.1.4.0/25 172.1.4.128/25

172.1.5.0/24

172.1.6.0/24

172.1.7.0/24

Answer: C Explanation:

The 172.1.4.0/22 subnet encompasses all routes from the IP range 172.1.4.0 鈥?172.1.7.255.

Question No: 195 – (Topic 5)

Which three statements about Syslog utilization are true? (Choose three.)

  1. Utilizing Syslog improves network performance.

  2. The Syslog server automatically notifies the network administrator of network problems.

  3. A Syslog server provides the storage space necessary to store log files without using router disk space.

  4. There are more Syslog messages available within Cisco IOS than there are comparable SNMP trap messages.

  5. Enabling Syslog on a router automatically enables NTP for accurate time stamping.

  6. A Syslog server helps in aggregation of logs and alerts.

Answer: C,D,F Explanation:

The Syslog sender sends a small (less than 1KB) text message to the Syslog receiver. The Syslog receiver is commonly called quot;syslogd,quot; quot;Syslog daemon,quot; or quot;Syslog server.quot; 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

Question No: 196 – (Topic 5)

What is the default Syslog facility level?

  1. local4

  2. local5

  3. local6

  4. local7

Answer: D Explanation:

By default, Cisco IOS devices, CatOS switches, and VPN 3000 Concentrators use facility local7 while Cisco PIX Firewalls use local4 to send syslog messages. Moreover, most Cisco devices provide options to change the facility level from their default value.

Reference: http://www.ciscopress.com/articles/article.asp?p=426638

Question No: 197 – (Topic 5)

Which IPv6 address is the all-router multicast group?

A. FF02::1

B. FF02::2

C. FF02::3

D. FF02::4

Answer: B Explanation:

Well-known IPv6 multicast addresses:

Address Description ff02::1

All nodes on the local network segment

ff02::2

All routers on the local network segment

Question No: 198 – (Topic 5)

Which statement describes the process of dynamically assigning IP addresses by the DHCP server?

  1. Addresses are allocated after a negotiation between the server and the host to determine the length of the agreement.

  2. Addresses are permanently assigned so that the hosts uses the same address at all times.

  3. Addresses are assigned for a fixed period of time, at the end of the period, a new request for an address must be made.

  4. Addresses are leased to hosts, which periodically contact the DHCP server to renew the lease.

Answer: D Explanation:

The DHCP lifecycle consists of the following:

->Allocation: A client begins with no active lease, and hence, no DHCP-assigned address. It acquires a lease through a process of allocation.

->Reallocation: If a client already has an address from an existing lease, then when it reboots or starts up after being shut down, it will contact the DHCP server that granted it the lease to confirm the lease and acquire operating parameters. This is sometimes called reallocation; it is similar to the full allocation process but shorter.

->Normal Operation: Once a lease is active, the client functions normally, using its

assigned IP address and other parameters during the 鈥渕ain part鈥?of the lease. The client is said to be bound to the lease and the address.

->Renewal: After a certain portion of the lease time has expired, the client will

attempt to contact the server that initially granted the lease, to renew the lease so it can keep using its IP address.

->Rebinding. If renewal with the original leasing server fails (because, for example,

the server has been taken offline), then the client will try to rebind to any active DHCP server, trying to extend its current lease with any server that will allow it to do so.

->Release: The client may decide at any time that it no longer wishes to use the IP

address it was assigned, and may terminate the lease, releasing the IP address.

Question No: 199 – (Topic 5)

What are three components that comprise the SNMP framework? (Choose three.)

  1. MIB

  2. agent

  3. set

  4. AES

  5. supervisor

  6. manager

Answer: A,B,F Explanation:

The SNMP framework consists of three parts:

鈥n SNMP manager – The system used to control and monitor the activities of network devices using SNMP.

鈥n SNMP agent – The software component within the managed device that maintains the data for the device and reports these data, as needed, to managing systems. Cisco Nexus 1000V supports the agent and MIB. To enable the SNMP agent, you must define the relationship between the manager and the agent.

鈥 managed information base (MIB) – The collection of managed objects on the SNMP agent.

SNMP is defined in RFCs 3411 to 3418.

Reference: http://www.cisco.com/c/en/us/td/docs/switches/datacenter/nexus1000/sw/4_0_4_s_v_1_3/s ystem_management/configuration/guide/n1000v_system/n1000v_system_10snmp.html

Question No: 200 – (Topic 5)

You have been asked to come up with a subnet mask that will allow all three web servers to be on the same network while providing the maximum number of subnets. Which network address and subnet mask meet this requirement?

A. 192.168.252.0 255.255.255.252

B. 192.168.252.8 255.255.255.248

C. 192.168.252.8 255.255.255.252

D. 192.168.252.16 255.255.255.240

E. 192.168.252.16 255.255.255.252

Answer: B Explanation:

A subnet mask of 255.255.255.248 will allow for up to 6 hosts to reside in this network. A subnet mask of 255.255.255.252 will allow for only 2 usable IP addresses, since we cannot use the network or broadcast address.

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