NEW QUESTION 1
Which Cisco IOS-XR command is used to unpack a package on the local router?

• A. install boot
• B. install commit
• C. install add
• D. install package

Answer: C

NEW QUESTION 2
What does the command 'rep admin vlan 100' accomplish?

• A. confines flooding of REP messages to VLAN 100
• B. reserves REP admin VLAN to 100 so that no REP messages are sent on VLAN 100
• C. forces VLAN 100 into a REP block state
• D. this is an invalid command

Answer: A

NEW QUESTION 3
You have installed a new router and configured OSPF on it. However, this new router is not able to establish an OSPF neighbor relationship with the neighbor OSPF router. Which four conditions could cause this problem? (Choose four.)

• A. mismatched OSPF hello/dead interval between the new router and the neighbor router
• B. mismatched OSPF area ID between the new router and the neighbor router
• C. mismatched OSPF authentication data between the new router and the neighbor router
• D. mismatched OSPF router ID between the new router and the neighbor router
• E. mismatched interface MTU between the new router and the neighbor router
• F. mismatched interface bandwidth between the new router and the neighbor router

Answer: ABCE

NEW QUESTION 4
Which two statements about NAT444 are true? (Choose two.)

• A. NAT444 packets are translated three times.
• B. NAT packets traverse three IPv4 addressing domains.
• C. NAT444 needs to work together with DNS64.
• D. There are two types of NAT444 (stateful or stateless).
• E. NAT is performed by the CPE and also by the service provider router.

Answer: BE

Explanation:

Carrier-grade NAT (CGN), also known as large-scale NAT (LSN), is an approach to IPv4 network design in which end sites, in particular residential networks, are configured with private network addresses that are translated to public IPv4 addresses by middlebox network address translator devices embedded in the network operator's network, permitting the sharing of small pools of public addresses among many end sites. This shifts the NAT function and configuration thereof from the
customer premises to the Internet service provider network. Carrier-grade NAT has been proposed as an approach for mitigating IPv4 address exhaustion.[1] Critics of carrier-grade NAT argue the following aspects:
Like any form of NAT, it breaks the end-to-end principle.[2] It has significant security, scalability, and reliability problems, by virtue of being stateful. It makes record keeping for law-enforcement operations more difficult.
It makes it impossible to host services on well known ports. It does not solve the IPv4 address exhaustion problem when a routable IP address is needed, such as in web hosting.
One use scenario of CGN can be described as NAT444,[3] because some customer's connections to public servers would pass through three different IPv4 addressing domains: the customer's own private network, the carrier's private network, and the public Internet. Another CGN scenario is Dual-Stack Lite, in which the carrier's network uses IPv6 and thus only two IPv4 addressing domains are needed.

NEW QUESTION 5
On Cisco routers, the address-family configuration command in BGP configuration mode is used to enable which BGP feature?

• A. BGP route policy
• B. multiprotocol BGP
• C. BGP policy accounting
• D. BGP communities

Answer: B

NEW QUESTION 6
Which three statements about access control lists on a Cisco IOS router are true? (Choose three)

• A. The more specific ACL entries should be placed at the top of the ACL.
• B. The generic ACL entries should be placed at the top of the ACL, to filter general traffic and reduce noise on the network.
• C. ACLs always search for the most specific entry before taking any filtering action.
• D. Router-generated packets cannot be filtered by the interface ACLs on the router.
• E. Extended ACLs should be placed as close to the destination as possible.
• F. There must be at least one permit statement in an ACL, or all traffic is denied.

Answer: ADF

NEW QUESTION 7
Within an MPLS domain, which table is used by the ingress edge LSR to make forwarding decisions when an unlabeled IP packet is received?

• A. FIB
• B. LFIB
• C. LIB
• D. MP-BGP
• E. VRF

Answer: A

Explanation:

NEW QUESTION 8
Which statement is true about enabling IS-IS routing and using the net command to configure the NSAP address?

• A. NSAP addresses have a fixed size of 20 bytes.
• B. The NSEL must always be 00 to identify the router.
• C. The area address follows the system ID field before the NSEL field.
• D. An AFI of 39 indicates that the AFI is a locally administered private address.

Answer: B

Explanation:
http://www.cisco.com/en/US/tech/tk365/technologies_white_paper09186a00800a3e6f.shtml

NEW QUESTION 9
Refer to the partial configurations exhibit.

What additional configurations are required to enable inter-VLAN routing for VLANs 10 and 20 on the Cisco ME 3400 switch using the metro IP access image?

• A. interface Fa0/1ip address 192.168.10.1 255.255.255.0!interface Fa0/2ip address 192.168.20.1 255.255.255.0!
• B. interface Fa0/1ip address 192.168.10.1 255.255.255.0!interface Fa0/2ip address 192.168.20.1 255.255.255.0!router eigrp 1network 192.168.10.0network 192.168.20.0!
• C. interface vlan 10ip address 192.168.10.1 255.255.255.0!interface vlan 20ip address 192.168.20.1 255.255.255.0!
• D. interface Fa0/1 encapsulation dot1q 10ip address 192.168.10.1 255.255.255.0!interface Fa0/2 encapsulation dot1q 20ip address 192.168.20.1 255.255.255.0!

Answer: C

NEW QUESTION 10
Which two statements about NAT64 are true? (Choose two.)

• A. NAT64 packets traverse two IPv4 addressing domains.
• B. NAT64 packets are translated two times.
• C. There are two types of NAT64 (stateful or stateless).
• D. NAT is performed by the CPE and also by the service provider edge router.
• E. The DNS64 server embeds the IPv4 address from the DNS A record with a preconfigured IPv6 translation prefix.

Answer: CE

Explanation:
http://www.cisco.com/en/US/prod/collateral/iosswrel/ps6537/ps6553/white_paper_c11- 676278.html
All viable translation scenarios are supported by NAT64, and therefore NAT64 is becoming the most sought translation technology. AFT using NAT64 technology can be achieved by either stateless or stateful means:
· Stateless NAT64, defined in RFC 6145, is a translation mechanism for algorithmically mapping IPv6 addresses to IPv4 addresses, and IPv4 addresses to IPv6 addresses. Like NAT44, it does not maintain any bindings or session state while performing translation, and it supports both IPv6- initiated and IPv4-initiated communications.
· Stateful NAT64, defined in RFC 6146, is a stateful translation mechanism for translating IPv6 addresses to IPv4 addresses, and IPv4 addresses to IPv6 addresses. Like NAT44, it is called stateful because it creates or modifies bindings or session state while performing translation. It supports both IPv6-initiated and IPv4-initiated communications using static or manual mappings. DNS64, an optional component defined in RFC 6147, when used in conjunction with NAT64, would trick the IPv6 hosts into thinking that the IPv4 destination as an IPv6 address, by synthesizing AAAA (quad A) resource records from A resource records.

NEW QUESTION 11
Which two commands are required to configure an access port for both voice VLAN 20 and data VLAN 30? (Choose two.)

• A. switchport mode access 30
• B. switchport data vlan 30
• C. switchport access data 20
• D. switchport access data 30
• E. switchport access vlan 30
• F. switchport mode voice 20
• G. switchport voice vlan 20

Answer: EG

NEW QUESTION 12
On Cisco IOS XR software, which two of the address-family command options in IS-IS configuration mode are valid? (Choose two)

• A. address-family clns
• B. address-family ipv4 unicast
• C. address-family ipv6 unicast
• D. address-family vpnv4
• E. address-family vpnv6

Answer: BC

Explanation:

http://www.cisco.com/en/US/docs/ios_xr_sw/iosxr_r3.8/routing/command/reference/rr38isis.pdf To enter address family configuration mode for configuring Intermediate System-to-Intermediate System (IS-IS) routing that use standard IP Version 4 (IPv4) and IP Version 6 (IPv6) address prefixes, use the address-family command in router configuration or interface configuration mode. To disable support for an address family, use the no form of this command. Address family {ipv4 | ipv6} {unicast | mulitcast} no address-family {ipv4 | ipv6} {unicast | multicast}

NEW QUESTION 13
What command will install the image needed on the Cisco IOS-XR if the SSH configuration options are unavailable?

• A. install activate disk0:c12k-k9sec.pie-4.1.2
• B. install activate disk0:c12k-diags.pie-4.1.2
• C. install commit disk0:c12k-diags.pie-4.1.2
• D. install ssh activate disk0:c12k-k9sec.pie-4.1.2

Answer: A

NEW QUESTION 14
When configuring an ACL entry, which network and wildcard mask matches only IP addresses 10.8.144.0 to 10.8.151.255?

• A. 10.8.144.0 0.0.3.255
• B. 10.8.144.0 0.0.7.255
• C. 10.8.144.0 0.0.15.255
• D. 10.8.144.0 0.0.252.255
• E. 10.8.144.0 0.0.248.255
• F. 10.8.144.0 0.0.240.255

Answer: B

NEW QUESTION 15
Which spanning-tree mode can be used to map several VLANs to a single spanning-tree instance?

• A. MST
• B. PVST+
• C. PVRST+
• D. RSTP

Answer: A

NEW QUESTION 16
A network engineer is trying to determine the mac address of a server attached to a switchport on a Cisco Catalyst 6500 Switch. The interface is connected, but no MAC address is present. The server has an IP address of 169.x.x.x. At which layer of the OSI Model does the problem exist?

• A. Layer 1
• B. Layer 2
• C. Layer 3
• D. Layer 4
• E. Layer 5
• F. Layer 6
• G. Layer 7

Answer: A

NEW QUESTION 17
Which segment protocol provides fast and predictable convergence (typically within 50 ms) in Layer 2 Ethernet ring topologies?

• A. Spanning Tree Protocol
• B. Flex Links
• C. Resilient Ethernet Protocol
• D. Spatial Reuse Protocol
• E. Resilient Packet Ring

Answer: C

Explanation:
http://www.cisco.com/en/US/docs/switches/metro/me3400/software/release/12.2_40_se/configurat ion/guide/swrep.html
Resilient Ethernet Protocol (REP) on the Cisco ME 3400E Ethernet Access switch. REP is a Cisco proprietary protocol that provides an alternative to Spanning Tree Protocol (STP) to control network loops, handle link failures, and improve convergence time. REP controls a group of ports connected in a segment, ensures that the segment does not create any bridging loops, and responds to link failures within the segment. REP provides a basis for constructing more complex networks and supports VLAN load balancing.

NEW QUESTION 18
You want to configure HSRP between a Cisco IOS and a Cisco IOS XR router for the 192.0.2.0/24 subnet. Half of the PCs on the 192.0.2.0/24 subnet are configured to use 192.0.2.1 as the default gateway, and the other half of the PCs are configured to use 192.0.2.254 as the default gateway. The intent is to load balance the traffic across both routers.
Which two IOS and IOS XR configurations are needed? (Choose two.)

• A. ! IOS-XRinterface GigabitEthernet 0/0/0/0ip address 192.0.2.3 255.255.255.0router hsrpinterface GigabitEthernet 0/0/0/0 hsrp 1 ipv4 192.0.2.1hsrp 1 priority 95hsrp 1 preempthsrp 2 ipv4 192.0.2.254hsrp 2 priority 105hsrp 2 preempt
• B. ! IOS-XRinterface GigabitEthernet 0/0/0/0ip address 192.0.2.1 255.255.255.0router hsrpinterface GigabitEthernet 0/0/0/0 hsrp 1 ipv4 192.0.2.1hsrp 1 priority 99hsrp 1 preempthsrp 2 ipv4 192.0.2.254hsrp 2 priority 101hsrp 2 preempt
• C. ! IOS-XRinterface GigabitEthernet 0/0/0/0ip address 192.0.2.3 255.255.255.0router hsrpinterface GigabitEthernet 0/0/0/0 hsrp 1 ipv4 192.0.2.1hsrp 1 priority 1hsrp 1 preempthsrp 2 ipv4 192.0.2.254hsrp 2 priority 1hsrp 2 preempt
• D. ! IOSinterface GigabitEthernet 0/0ip address 192.0.2.2 255.255.255.0standby 1 ip 192.0.2.1standby 1 priority 105standby 1 preemptstandby 2 ip 192.0.2.254standby 2 priority 95standby 2 preempt
• E. ! IOSinterface GigabitEthernet 0/0ip address 192.0.2.254 255.255.255.0standby 1 ip 192.0.2.1standby 1 preemptstandby 2 ip 192.0.2.254standby 2 preempt
• F. ! IOSinterface GigabitEthernet 0/0ip address 192.0.2.2 255.255.255.0standby 1 ip 192.0.2.1standby 1 preemptstandby 1 priority 2standby 2 ip 192.0.2.254standby 2 preemptstandby 2 priority 2

Answer: AD

NEW QUESTION 19
Refer to the exhibit.

Which three commands are required on interface fastethernet 5/6 in order to create a trunk link between another Cisco Catalyst Switch? (Choose three.)

• A. no shutdown
• B. switchport mode trunk
• C. encapsulation trunk
• D. switchport trunk encapsulation dot1Q
• E. switchport trunk enable
• F. no switchport
• G. interface fastethernet 5/6 trunk
• H. switchport trunk allow dot1Q

Answer: ABD

NEW QUESTION 20
You have just enabled IS-IS on the lab testing network. You notice that IS-IS is not using the optimal path selection based on the interface bandwidth. Currently, the IS-IS routing process seems to be selecting the best path based on the hop count.
What configuration change can you make to cause IS-IS to select the optimal path based on the interface bandwidth?

• A. Enable a wide-style IS-IS metric.
• B. Enable a narrow-style IS-IS metric.
• C. Change the default auto-cost reference bandwidth to a higher value.
• D. Change the default IS-IS metric on each of the router interfaces to better correspond to the interface bandwidth.
• E. Change the interface bandwidth by using the bandwidth interface configuration mode command.

Answer: D

Explanation:
http://bradhedlund.com/notes/is-is/

NEW QUESTION 21
Topology:

Select and Place:

• A. Mastered
• B. Not Mastered

Answer: A

Explanation:

NEW QUESTION 22
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