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Q441. Which two statements about NPTv6 are true? (Choose two.) 

A. The translation is invisible to applications that hard code IP information within the application logic. 

B. It is a one-way stateful translation for the IPv6 address. 

C. Translation is 1:1 at the network layer. 

D. It is a two-way stateless translation for the network prefix. 

Answer: C,D 


This document describes a stateless, transport-agnostic IPv6-to-IPv6 Network Prefix Translation (NPTv6) function that provides the address-independence benefit associated with IPv4-to-IPv4 NAT (NAPT44) and provides a 1:1 relationship between addresses in the "inside" and "outside" prefixes, preserving end-to-end reachability at the network layer NPTv6 Translation is stateless, so a "reset" or brief outage of an NPTv6 Translator does not break connections that traverse the translation function, and if multiple NPTv6 Translators exist between the same two networks, the load can shift or be dynamically load shared among them. NPTv6 is defined to include a two-way, checksum-neutral, algorithmic translation function, and nothing else. 


Q442. Which two statements about redistribution are true? (Choose two.) 

A. EIGRP requires the route to have a default metric defined. 

B. EIGRP and OSPF use their router IDs to prevent loops. 

C. When OSPF is redistributed into IS-IS, the default metric must be configured under the IS-IS process. 

D. When traffic is redistributed into OSPF, the subnets command is needed to redistribute classful subnets. 

E. The default seed metric for OSPF redistributed routes is 30. 

Answer: A,B 

Q443. Which two statements about device access control are true? (Choose two.) 

A. The AUX port is displayed as type tty in the output of the show line command. 

B. VTY lines are associated with physical interfaces on a network device. 

C. MPP restricts device-management access to interfaces that are configured under the control plane host configuration. 

D. The enable password command sets an MD5 one-way encrypted password. 

E. The console port supports hardware flow control 

Answer: C,E 

Q444. Which three features does GETVPN support to improve deployment and scalability? (Choose three.) 

A. configuration of multiple key servers to work cooperatively 

B. allowing traffic to be discarded until a group member registers successfully 

C. local exceptions in the traffic classification ACL 

D. GDOI protocol configuration between group members and the key server 

E. redundant IPsec tunnels between group members and the key server 

F. redundant multicast replication streaming through the use of a bypass tunnel 

Answer: A,B,C 

Q445. Which statement is true about Fast Link Pulses in Ethernet? 

A. They are used during collision detection. 

B. They are used only if the media type is optical. 

C. They are part of UniDirectional Link Detection. 

D. They are used during autonegotiation. 



To make sure that your connection is operating properly, IEEE 802.3 Ethernet employs normal link pulses (NLPs), which are used for verifying link integrity in a 10BaseT system. This signaling gives you the link indication when you attach to the hub and is performed between two directly connected link interfaces (hub-to-station or station-to-station). NLPs are helpful in determining that a link has been established between devices, but they are not a good indicator that your cabling is free of problems. An extension of NLPs is fast link pulses. These do not perform link tests, but instead are employed in the autonegotiation process to advertise a device's capabilities. 


Q446. Which three routing protocols utilize TLVs? (Choose three.) 







Answer: A,B,E 


IS-IS, originally designed for Open System Interconnection (OSI) routing, uses TLV parameters to carry information in Link State Packets (LSPs). The TLVs make IS-IS extendable. IS-IS can therefore carry different kinds of information in the LSPs. Several routing protocols use TLVs to carry a variety of attributes. Cisco Discovery Protocol (CDP), Label Discovery Protocol (LDP), and Border Gateway Protocol (BGP) are examples of protocols that use TLVs. BGP uses TLVs to carry attributes such as Network Layer Reachability Information (NLRI), Multiple Exit Discriminator (MED), and local pReference: The IP header of the EIGRP packet specifies IP protocol number 88 within it, and the maximum length of the packet will be the IP MTU of the interface on which it is transmitted, most of the time 1500 octets. Following the IP header is the various Type/Length/Value (TLV) triplets. These TLVs will not only carry the route entries but also provide fields for the management of the DUAL process, multicast sequencing, and IOS software versions from the router. 


Q447. Which two statements about HSRP are true? (Choose two.) 

A. Its virtual MAC is 0000.0C07.Acxx. 

B. Its multicast virtual MAC is 0000.5E00.01xx. 

C. Its default configuration allows for pre-emption. 

D. It supports tracking. 

E. It supports unique virtual MAC addresses. 

Answer: A,D 


Default HSRP Configuration 


Default Setting 

HSRP version 

Version 1 

HSRP groups 

None configured 

Standby group number 

Standby MAC address 

System assigned as: 0000.0c07.acXX, where XX is the HSRP group number 

Standby priority 


Standby delay 

0 (no delay) 

Standby track interface priority 


Standby hello time 

3 seconds 

Standby holdtime 

10 seconds 

. The standby track interface configuration command ties the router hot standby priority to the availability of its interfaces and is useful for tracking interfaces that are not configured for HSRP. When a tracked interface fails, the hot standby priority on the device on which tracking has been configured decreases by 10. If an interface is not tracked, its state changes do not affect the hot standby priority of the configured device. For each interface configured for hot standby, you can configure a separate list of interfaces to be tracked. 

. The standby track interface-priority interface configuration command specifies how much to decrement the hot standby priority when a tracked interface goes down. When the interface comes back up, the priority is incremented by the same amount. 

Reference: 2-2_55_se/configuration/guide/3750xscg/swhsrp.html 

Q448. Which two statements are true about VPLS? (Choose two.) 

A. It can work over any transport that can forward IP packets. 

B. It provides integrated mechanisms to maintain First Hop Resiliency Protocols such as HSRP, VRRP, or GLBP. 

C. It includes automatic detection of multihoming. 

D. It relies on flooding to propagate MAC address reachability information. 

E. It can carry a single VLAN per VPLS instance. 

Answer: D,E 


VPLS relies on flooding to propagate MAC address reachability information. Therefore, flooding cannot be prevented. 

VPLS can carry a single VLAN per VPLS instance. To multiplex multiple VLANs on a single instance, VPLS uses IEEE QinQ. 



Drag and drop the IPv6 address on the left to the correct IPv6 address type on the right. 


Q450. Which two statements about TCP are true? (Choose two.) 

A. TCP option must be divisible by 32. 

B. It has a 16-bit window size. 

C. Its maximum data offset is fifteen 32-bit words. 

D. It has a 32-bit window size. 

E. Its maximum data offset is ten 32-bit words. 

F. It has a 32-bit checksum field. 

Answer: B,C