单选题Why is IPv6 packet processing more effective than IPv4 packet processing?()Afixed header sizeBsmaller header sizeCfewer header fieldsDvariable header size
单选题
Why is IPv6 packet processing more effective than IPv4 packet processing?()
A
fixed header size
B
smaller header size
C
fewer header fields
D
variable header size
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When an SRX series device receives an ESP packet, what happens?() A. If the destination address of the outer IP header of the ESP packet matches the IP address of the ingress interface, it willB. If the destination IP address in the outer IP header of ESP does not match the IP address of the ingress interface, it willC. If the destination address of the outer IP header of the ESP packet matches the IP address of the ingress interface, based packet.D. If the destination address of the outer IP header of the ESP packet matches the IP address of the ingress interface, based of inner header, it will decrypt the packet.
Which two are valid fields in an IPv6 header?() A. Hop LimitB. Next HeaderC. Fragment OffsetD. Header Checksum
Why is IPv6 packet processing more effective than IPv4 packet processing?() A. fixed header sizeB. smaller header sizeC. fewer header fieldsD. variable header size
Which three are characteristics of IPv6?() A. An IPv6 address is 128 bits long.B. An IPv6 header contains the header checksum field.C. An IPv6 header is 20 bits long.D. An IPv6 header contains the next header field.E. IPv6 route rs send RA messages.F. An IPv6 header contains the protocol field.
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Which statement correctly describes the disabling of IP TTL propagation in an MPLS network?()A、The TTL field from the IP packet is copied into the TTL field of the MPLS label header at the ingress edge LSRB、TTL propagation cannot be disabled in an MPLS domainC、TTL propagation is only disabled on the ingress edge LSRD、The TTL field of the MPLS label header is set to 255E、The TTL field of the IP packet is set to 0
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Why is IPv6 packet processing more effective than IPv4 packet processing?()A、fixed header sizeB、smaller header sizeC、fewer header fieldsD、variable header size
When an SRX series device receives an ESP packet, what happens?()A、If the destination address of the outer IP header of the ESP packet matches the IP address of the ingress interface, it willB、If the destination IP address in the outer IP header of ESP does not match the IP address of the ingress interface, it willC、If the destination address of the outer IP header of the ESP packet matches the IP address of the ingress interface, based packet.D、If the destination address of the outer IP header of the ESP packet matches the IP address of the ingress interface, based of inner header, it will decrypt the packet.
多选题What are two reasons for packet loss on a VoIP connection?()Aserialization delayBoverrunCfull buffers and queuesDpropagation delayEshaping delayFTCP header errors
多选题Which three are characteristics of IPv6?()AAn IPv6 address is 128 bits long.BAn IPv6 header contains the header checksum field.CAn IPv6 header is 20 bits long.DAn IPv6 header contains the next header field.EIPv6 route rs send RA messages.FAn IPv6 header contains the protocol field.
单选题Which statement correctly describes the disabling of IP TTL propagation in an MPLS network?()AThe TTL field from the IP packet is copied into the TTL field of the MPLS label header at the ingress edge LSRBTTL propagation cannot be disabled in an MPLS domainCTTL propagation is only disabled on the ingress edge LSRDThe TTL field of the MPLS label header is set to 255EThe TTL field of the IP packet is set to 0
单选题Which statement is true about IP telephony calls?()A A Voice over IP (VoIP) packet consists of the voice payload, IP header, TCP header, RTP header, and Layer 2 link header.B The voice carrier stream uses H323 to set up, maintain, and tear down call endpoints.C Call control signaling uses Real-Time Transport Protocol (RTP) packets that contain actual voice samples.D The sum of bandwidth necessary for each major application, including voice, video, and data, should not exceed 75 percent of the total available bandwidth for each link.
单选题Which process plays a major role in the creation of the CEF adjacency table? ()AAddress Resolution Protocol (ARP)BPDU header rewriteCNetFlow switchingDhello packet exchange
单选题Where is the MPLS label imposed?()Aafter the Layer 3 header and before the Layer 2 payloadBafter the Layer 3 header and before the Layer 4 payloadCafter the Layer 2 header and before the Layer 1 payloadDafter the Layer 1 header and before the Layer 2 payloadEafter the Layer 2 header and before the Layer 3 payload
单选题When an SRX series device receives an ESP packet, what happens?()AIf the destination address of the outer IP header of the ESP packet matches the IP address of the ingress interface, it willBIf the destination IP address in the outer IP header of ESP does not match the IP address of the ingress interface, it willCIf the destination address of the outer IP header of the ESP packet matches the IP address of the ingress interface, based packet.DIf the destination address of the outer IP header of the ESP packet matches the IP address of the ingress interface, based of inner header, it will decrypt the packet.
单选题Which of the following is true about the MPLS header and its EXP field size?()AThe MPLS header is 2 bytes,and the EXP field is 3 bits long.BThe MPLS header is 1 byte,and the EXP field is 3 bits long.CThe MPLS header is 4 bytes,and the EXP field is 3 bits long.DThe MPLS header is 3 bytes,and the EXP field is 3 bits long.
多选题Which two statements about an interface configured with the asr-group command are correct?()AThe FWSM supports up to 16 asymmetric routing groups.BIf a matching packet is not found, the packet is dropped.CAsymetric routing of return traffic is enabled.DIf a matching packet is found, the Layer 3 header is rewritten.EIf a matching packet is found, the Layer 3 header is rewritten and the packet is forwarded to the default gateway.
多选题What are disadvantages of Network Address Translation Transparency?()AThere is no disadvantage.BIt will add 16 bytes per packet of overhead(8 bytes UDP header, and 8 bytes of NON-IKE Marker).CIt will add 36 bytes per packet of overhead (20 bytes of IP header, 8 bytes of UDP header, 8 bytes of NON-IKE Marker).DIt will require that both crypto peers support this feature in the IOS version. Both crypto peers must also have this feature enabled.