What are two requirements to perform a warm Cisco IOS upgrade on a Cisco ISR router？ （）（Choose two.)

A.They create split-horizon issues

B.They require a unique subnet within a routing domain

C.They emulate leased lines

D.They are ideal for full-mesh topologies

E.They require the use of NBMA options when using OSPF

A. telnet access does not require a password

B. nat

C. no broadcast

D. chanage of destination address in the ipv6 header

E. chanage of source address in the ipv6 header

F. autoconfiguration

A. All "Add" channels require uniform power levels.

B. The flexibility of wavelengths per OADM is limited.

C. It is easier to balance "Pass-Through" and "Add" channels.

D. There is lower pass-through loss using multi-channel OADMs.

E. You can extract a single channel without dropping other channels.

A. when all equipment is manufactured by Cisco

B. when there are multiple paths to destination networks

C. because having multiple routing protocols confuses hackers

D. when migrating from an older Interior Gateway Protocol (IGP) to a new IGP

E. when using UNIX host - based routers

F. when smaller broadcast domains are desired

A.NAT protects network security because private networks are not advertised.

B.NAT accelerates the routing process because no modifications are made on the packets.

C.Dynamic NAT facilitates connections from the outside of the network.

D.NAT facilitates end-to-end communication when IPsec is enable.

E.NAT eliminates the need to re-address all host that require extemal access.

F.NAT conserves addresses through host MAC-level multiplexing.

e OSI model. Why does the data communication industry use the layered OSI reference model？ (Choose two)

A．It enables equipment from different vendors to use the same electronic components, thus saving research and development funds

B．It encourages industry standardization by defining what functions occur at each layer of the model

C．It divides the network communication process into smaller and simpler components; thus aiding component development, design and troubleshooting

D．It provides a means by which changes in functionality in one layer require changes in other layers

E．It supports the evolution of multiple competing standards and thus provides business opportunities for equipment manufacturers

A. Overall 10 publications with clinical trials could be identified.Their clinical outcome was compared with that laboratory bond strength studies.

B.Clinical data provide strong evidence that air-abrasion at a moderate pressure in combination with using phosphate monomer containing primers and/or luting resins provide long-term durable bonding to glass-infiltrated alumina and zirconia ceramic under the humid and stressful oral conditions.

C. As simple and clinically reliable bonding methods to oxide ceramics exist, the rationale for development of alternative bonding methods might be reconsidered especially when these methods are more time consuming or require rather complicated and/or technique sensitive procedures.

D.Conducting a PubMed database search in May 2014 for articles dealing with the resin bond to dental zirconia ceramic reveals an astonishing increase of research being published in the last two decades years.

A.Overall 10 publications with clinical trials could be identified Their clinical outcome was compared with that laboratory bond strength studies.

B.Clinical data provide strong evidence that air-abrasion at a moderate pressure in combination with using phosphate monomer containing primers and/or luting resins provide long-term durable bonding to glass-infiltrated alumina and zirconia ceramic under the humid and stressful oral conditions.

C.As simple and clinically reliable bonding methods to oxide ceramics exist, the rationale for development of alternative bonding methods might be reconsidered especially when these methods are more time consuming or require rather complicated and/or technique sensitive procedures.

D.Conducting a PubMed database search in May 2014 for articles dealing with the resin bond to dental zirconia ceramic reveals an astonishing increase of research being published in the last two decades years.

A.Routed 1483

B.Bridged 1483

C.PPP over ATM

D.PPP over Ethernet

A. adding a VLAN

B. adding a cluster

C. running a tcpdump

D. adding a target server

A. antispam

B. antivirus (full AV)

C. content filtering

D. Web-filtering redirect