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

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 Correct Answer: A

Which type of switch port?

On the Cisco ME 3400 switch, spanning tree is enabled by default on which type of switch port? A. UNI B. ENI C. NNI Real 8 Cisco 640-878 Exam D.

Which protocol to establish peering sessions in an Internet exchange point environment?

ISPs use which protocol to establish peering sessions in an Internet exchange point environment? A. LDP B. IS-IS C. BGP D. OSPF Correct Answer: C

Which single configuration change can you make in router ospf configuration mode so that the Fast Ethernet interfaces have a higher OSPF cost than the Gigabit Ethernet interfaces?

You are enabling OSPF on a router and notice that all the Fast Ethernet and the Gigabit Ethernet interfaces have the same OSPF cost of 1. Which single configuration change

Which set of commands enables OSPF area 0 on the Gi0/0/0/0 interface that has an IPv4 IP address of 192.168.1.1/24?

On Cisco IOS XR software, which set of commands enables OSPF area 0 on the Gi0/0/0/0 interface that has an IPv4 IP address of 192.168.1.1/24? A. router ospf 1 network

A VLAN is a logical grouping of switch ports that belong to which two of these?

A VLAN is a logical grouping of switch ports that belong to which two of these? (Choose two.) A. the same virtual switch cluster B. the same IP subnet C.

Which IPv6 address block is reserved for 6to4 tunneling?

Which IPv6 address block is reserved for 6to4 tunneling? A. 2000::/16 B. 2001::/16 C. 2002::/16 D. 3ffe::/16 E. fe80::/16 Correct Answer: C

When upgrading a Cisco ASR 1001 Router, when is the request platform software package expand file bootflash:image-name command required?

When upgrading a Cisco ASR 1001 Router, when is the request platform software package expand file bootflash:image-name command required? A. to copy the consolidated Cisco IOS XE image to the

Which Cisco router platform supports running either the Cisco IOS or IOS XR operating system?

Which Cisco router platform supports running either the Cisco IOS or IOS XR operating system? A. Cisco CRS B. Cisco ASR9k C. Cisco ASR1K D. Cisco ISR-G2 E. Cisco 12000

Which two IOS and IOS XR configurations are needed?

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

Which two of the address-family command options in IS-IS configuration mode are valid?

On Cisco IOS XR software, which two of the address-family command options in IS-IS configuration mode are valid? (Choose two) Real 29 Cisco 640-878 Exam A. address-family clns B. address-family

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

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.

Which additional configuration is required?

Your switch network has been configured to support multiple VLANs. In order for the users on one VLAN to communicate with users on another VLAN, which additional configuration is required?

Which table is used by the label switch routers to make forwarding decisions when a labeled packet is received?

Within an MPLS domain, which table is used by the label switch routers to make forwarding decisions when a labeled packet is received? A. FIB B. RIB C. LFIB D.

What is the default commit option?

On Cisco IOS XR software, what is the default commit option? A. best-effort B. psuedo-atomic C. replace D. force Correct Answer: B

When configuring a new VLAN on Cisco IOS switches, which configuration parameter is required?

When configuring a new VLAN on Cisco IOS switches, which configuration parameter is required? A. VLAN name B. native VLAN ID C. VLAN ID D. VLAN map E. VLAN MTU

What is a requirement for performing Cisco IOS ISSU on the Cisco IOS XE-based ASR 1006 and ASR 1013 routers?

What is a requirement for performing Cisco IOS ISSU on the Cisco IOS XE-based ASR 1006 and ASR 1013 routers? A. must use consolidated package mode B. must use subpackage

When is a route-policy configuration needed on a Cisco IOS XR router using RPL?

When is a route-policy configuration needed on a Cisco IOS XR router using RPL? A. when enabling an IGP routing protocol configuration B. when enabling an EBGP peering configuration C.

Which two protocols are most often deployed in Cisco IP NGN multiservices core networks to support services like VPNs?

Which two protocols are most often deployed in Cisco IP NGN multiservices core networks to support services like VPNs? (Choose two.) A. MPLS B. GRE C. mGRE D. SSL E.

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

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.

Which table is used by the ingress edge LSR to make forwarding decisions when an unlabeled IP packet is received?

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

Which three statements about access control lists on a Cisco IOS router are true?

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

Which Cisco IOS access list permits HTTP traffic that is sourced from host 10.1.129.100 port 3030 and that is destined to host 192.168.1.10?

Which Cisco IOS access list permits HTTP traffic that is sourced from host 10.1.129.100 port 3030 and that is destined to host 192.168.1.10? A. access-list 101 permit tcp any eq

What is dual IOS mode on the Cisco ASR 1001 Router?

What is dual IOS mode on the Cisco ASR 1001 Router? A. redundant IOS processes that are running on the active RP and standby RP B. active and standby IOS

Which Cisco platform runs the Cisco IOS XE operating system?

Which Cisco platform runs the Cisco IOS XE operating system? A. Cisco ASR9K B. Cisco CRS C. Cisco 12000 GSR D. Cisco ASR1K E. Cisco ME 3400 F. Cisco ISR-G2

Which Cisco router platform should the service provider implement as the managed CE device?

Which Cisco router platform should the service provider implement as the managed CE device? A. Cisco ASR1K B. Cisco ISR-G2 C. Cisco ASR9K D. Cisco 12000 GSR E. Cisco 7200

What are the four valid address-family configuration command options in static route configuration mode?

On Cisco IOS XR software, what are the four valid address-family configuration command options in static route configuration mode? (Choose four.) A. address-family ipv4 unicast B. address-family ipv6 unicast C.

Which three statements about service provider network requirements are true?

Which three statements about service provider network requirements are true? (Choose three.) Real 45 Cisco 640-878 Exam A. Service provider networks are becoming more specialized, with providers offering only one

Which three are common ISP access network technologies?

Which three are common ISP access network technologies? (Choose three.) A. DSL B. Cable modem C. DWDM D. MPLS E. PON F. MP-BGP Correct Answer: ABE

Which three Cisco platforms are classified as core routers?

Which three Cisco platforms are classified as core routers? (Choose three.) A. Cisco XR 12000 B. Cisco ME 3400 C. Cisco ASR 1006 D. Cisco CRS-3 E. Cisco ASR 9010

Which statement about Cisco IOS XE software is true?

Which statement about Cisco IOS XE software is true? A. It uses a two-stage configuration process. B. It is identical in look and feel to Cisco IOS software. C. It

Which three statements about VLAN implementation in a Layer 2 switch environment are true?

Which three statements about VLAN implementation in a Layer 2 switch environment are true? (Choose three.) A. The Cisco IOS switchport access vlan interface configuration command is used to configure

Which two statements about the link state routing process are true?

Which two statements about the link state routing process are true? (Choose two.) A. It uses the DUAL algorithm. B. It uses metrics such as AS path. C. All routers

Which two statements about carrier-grade NAT are true?

Which two statements about carrier-grade NAT are true? (Choose two.) A. It conserves IPv4 addresses. Real 49 Cisco 640-878 Exam B. A service provider issues private IP addresses to its

What are three common problems related to sessions not establishing between iBGP neighbors?

What are three common problems related to sessions not establishing between iBGP neighbors? (Choose three.) A. Incorrect MAC-address configured B. Unable to reach IP C. Network is not configured under

Which three are correct statements based on the BGP configuration below?

Which three are correct statements based on the BGP configuration below? (Choose three.) Router#config t Router(config)#router bgp 1 Router(config-router)#neighbor 1.1.1.1 remote-as 1 Router(config-router)#neighbor 3.3.3.3 remote-as 2 A. local AS is

At which three layers of the OSI model does the problem exist?

A network administrator is troubleshooting an issue whereupon they able to ping the web server, but unable to web browse to the same web server. When the administrator telnets to

Which layer of the OSI Model does the problem exist?

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

Which type of Service Provider is this?

A company begins offering SIP and PRI trunks to customers. Which type of Service Provider is this? A. Managed Service Provider B. Internet Service Provider C. Telecommunications Service Provider D.

What layer of the IP NGN Model does the Customer Element and the Carrier Ethernet exist?

What layer of the IP NGN Model does the Customer Element and the Carrier Ethernet exist? A. Service Layer B. Network Layer C. Application Layer D. Operational Layer Real 80

Which number range is allocated to private Autonomous Systems by the Internet Assigned Numbers Authority?

Which number range is allocated to private Autonomous Systems by the Internet Assigned Numbers Authority? A. 65535 to 65545 B. 64535 to 64536 C. 64512 to 65535 D. 65535 to

Which of the following commands would be used to prevent a switchport from processing Bridge Protocol Data Units?

Which of the following commands would be used to prevent a switchport from processing Bridge Protocol Data Units? A. switch(config)#bpdu filter enable B. switch(config)#no bpdu enable C. switch(config-if)#spanning-tree bpdufilter enable

Which commands will configure the spanning tree operating mode that can group multiple VLANs in a single domain?

Which commands will configure the spanning tree operating mode that can group multiple VLANs in a single domain? A. switch(config)#spanning-tree mode pvst B. switch(config)#spanning-tree mode rstp Real 81 Cisco 640-878

What is most likely the problem?

A customer has created a new VLAN for the subnet that was allocated to them. Computers on the subnets can ping their default gateway, but they cannot ping devices in

Which command configures a switchport to connect only a host device in VLAN 301?

Which command configures a switchport to connect only a host device in VLAN 301? A. switchport access vlan 301 B. switchport mode trunk vlan 301 C. switchport mode access vlan

Which two commands are required to configure an access port for both voice VLAN 20 and data VLAN 30?

Which two commands are required to configure an access port for both voice VLAN 20 and data VLAN 30? (Choose two.) Real 82 Cisco 640-878 Exam A. switchport mode access

What additional two configurations are required to ensure the switch can route packets to the Internet through a gateway with IP address of 209.165.200.250?

A customer has been allocated a new VLAN on a new Layer 3 switch. After configuring the Switched Virtual Interface, what additional two configurations are required to ensure the switch

What is the purpose of the for PFX to PEER command?

Refer to the partial Cisco IOS-XR configuration. What is the purpose of the for PFX to PEER command? ! mpls ldp label advertise disable for PFX to PEER ! !

What does the command ‘rep admin vlan 100’ accomplish?

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

What additional command would need to be applied to both sides of the Q-in-Q trunk?

After configuring Q-in-Q on a new interface, the customer has requested that the IOS version and remote model also be viewable via the trunk. What additional command would need to