JN0-303章节练习(2018.08.13)

多项选择题
In which two ways can you influence how downstream LSRs treat MPLS traffic？（）
A.Use an EXP rewrite table.
B.Use a DSCP rewrite table.
C.Statically assign a CoS value to an LDP-signaled LSP
D.Statically assign a CoS value to an RSVP-signlated LSP
单项选择题
In JUNOS software， which would prevent an OSPF router from importing the 10.0.0.4/30 summary route？（）
A.Import policies are not allowed， so this is not possible.
B.Export policies are not allowed， so this not possible.
C.Apply a firewall filter matching 10.0.0./4/30 and reject the route.
D.Apply an import policy matching 10.0.0.4/30 and reject the route.
多项选择题
What are three functions associated with JUNOS software class of service？（）
A.Log incoming traffic.
B.Classify incoming packets.
C.Manage outbound bandwidth.
D.Manage congestion by intelligently dropping traffic.
E.Classify ATM QoS packets into a equivalent IP CoS environment.
单项选择题
Which of the following multicast mode does Auto-RP require？（）
A.Link-mode
B.Dense mode
C.Sparse mode
D.Sparse-dense mode
单项选择题
How many strict-high priority forwarding classes can be applied to a given interface？（）
A.1
B.2
C.3
D.4
单项选择题
Which Behavior Aggregate （BA） is used to classify traffic arriving on an LSP？（）
A.exp
B.dscp
C.802.1P
D.inet-precedence mode ipprec-default
E.inet-precedence mode ipprec-compatability
单项选择题
What is required to enable the use of metrics larger than 63 for traffic engineering in IS-IS？（）
A.Nothing， wide metrics are used by default in IS-IS
B.Enable wide-metrics-only under protocol IS-IS
C.Enable traffic-engineering under protocols IS-IS
D.Disable TVL’s 2 and 128 which carry the 6-bit metrics （0-63）.
单项选择题
In IS-IS， how does the restarting router inform its helpers that a restarts event occurred？（）
A.Sending out a graceful restart PDU
B.Sending an LSP that contains no TLVs.
C.Sending out a restarts TLV with the RR bit set.
D.Reflooding its LSP with a maximum sequence number.
多项选择题
Which two are valid IS-IS PDU types？（）
A.broadcast hellos
B.Level 1 LAN hellos
C.Point-to-point hellos
D.Level 2 point-to-point hellos
多项选择题
What are three examples of a provider-provisioned VPN supported by JUNOS software？（）
A.L2F
B.PPTP
C.Circuit cross-connect
D.Draft-Martini-based VPNs
E.Draft-Kompella-based VPNs