Enterprise, Specialist, (JNCIS-ENT): JN0-343 Exam
- JN0-343 Questions & Answers
- Exam Code: JN0-343
- Exam Name: Enterprise, Specialist, (JNCIS-ENT)
- Updated: February 14, 2012
- Q & A: 275 Q&As
1.How much overhead does the GRE header add to an IPv4 packet?
A. 24 bytes
B. 32 bytes
C. 48 bytes
D. 64 bytes
Answer: A
2.Click the Exhibit button.
Based on the exhibit, in which spanning-tree state would the indicated port be.?
A. listening
B. learning
C. forwarding
D. blocking
Answer: C
3.Which OSPF area type can contain Type 7 LSAs?
A. backbone
B. not-so-stubby
C. stub
D. totally stubby
Answer: B
4.Which two pieces of information are communicated by IS-IS TLVs? (Choose two.)
A. network protocols supported
B. designated router priority
C. authentication key
D. PDU Length
Answer: A,C
5.Which configuration disables a port when more than 30,000 Kbps of broadcast traffic is received over an aggregated Ethernet interface with two member links?
A. Option A
B. Option B
C. Option C
D. Option D
Answer: C
6.Given the following output, what has been configured for the 192.168.3.0/24 prefix?
A. per-flow load balancing
B. a floating static route
C. per-packet load balancing
D. a qualified next hop
Answer: A
7.Which two of the following are functions of the BGP update message? (Choose two.)
A. It withdraws routes that are no longer valid.
B. It notes that an unsupported option is detected from the open message.
C. It transports routing information between BGP peers.
D. It readvertises routes that have already been sent and acknowledged.
Answer: A,C
8.Which routing-instance type allows the sharing of interface routes and the support features used in source-based routing?
A. virtual-router
B. vrf
C. forwarding
D. multi-instance
Answer: C
9.What is the minimum configuration necessary to create two VLANs and two operational RVIs?
A. Option A
B. Option B
C. Option C
D. Option D
Answer: B
10.Which statement describes the default Junos OS behavior for OSPF?
A. External LSAs are advertised in a stub area.
B. An ABR does not announce a default route into a stub area.
C. Stub area internal routers generate a default route.
D. Only totally stubby areas need a default route.
Answer: B
11.What are two valid BPDU types? (Choose two.)
A. topology change notification
B. configuration change
C. configuration
D. root bridge
Answer: A,C
12.Which of the following is enabled by default on an EX Series switch?
A. MAC move limiting
B. storm control
C. IP source guard
D. dynamic ARP inspection
Answer: B
13.Which three statements correctly describe the default BGP advertisement behavior in the Junos OS? (Choose three.)
A. Routes learned through EBGP are advertised to IBGP peers.
B. Routes learned through EBGP are advertised to other EBGP peers.
C. Routes learned through IBGP are advertised to other IBGP peers.
D. Routes learned through IBGP will be advertised to EBGP peers.
E. Routes learned through an IGP are automatically advertised to EBGP peers.
Answer: A,B,D
14.When loop protection is enabled on an interface, what happens when the port stops receiving BPDUs?
A. The port is placed in a loop-inconsistent role.
B. The port is placed into listening mode.
C. The port is transitioned into a forwarding state.
D. The interface is disabled.
Answer: A
15.Which OSPF LSA type is sent by all routers in an area to advertise its connected subnets?
A. router
B. network
C. external
D. summary
Answer: A
16.Which command correctly assigns AS 65432 as the local router’s autonomous system?
A. set protocols bgp local-as 65432
B. set routing-options local-as 65432
C. set protocols bgp autonomous-system 65432
D. set routing-options autonomous-system 65432
Answer: D
17.Which statements are true about graceful Routing Engines switchover (GRES)?
A. Configuration on both Routing Engines must be synchronized.
B. The backup Routing Engine cannot be managed through IP address because RPD does not run on backup the Routing Engine.
C. Different hostnames must be configured on both Routing-Engines.
D. Both Routing-Engines are managed through a single out-of-band-management IP address.
Answer: A
18.Configuring bpdu-timeout-action enables which protection mechanism?
A. root protection
B. BPDU protection
C. loop protection
D. RSTP protection
Answer: C
19.Which Junos command correctly configures the ge-0/0/0.0 interface to operate only for IS-IS Level 2?
A. set interfaces ge-0/0/0.0 family iso level 2 enable
B. set interfaces ge-0/0/0.0 family iso level 1 disable
C. set protocols isis interface ge-0/0/0.0 level 2 enable
D. set protocols isis interface ge-0/0/0.0 level 1 disable
Answer: D
20.Which two OSPF LSA types can be used to advertise routes between areas? (Choose two.)
A. router
B. network
C. external
D. summary
Answer: C,D
