Latest GB0-391 Pass Guaranteed Exam Dumps Certification Sample Questions
New GB0-391 Test Materials & Valid GB0-391 Test Engine
NEW QUESTION 163
In L2TP networking, what are the authentication methods for users by LNS?
- A. LCP renegotiation
- B. Strong system CHAP authentication
- C. on behalf of the agent authentication
- D. IPCP renegotiation
Answer: A,B,C
NEW QUESTION 164
Among multiple VRF technologies, one VRF will have ______ .
- A. independent stand router CPU
- B. independent stand routing protocol process
- C. independent stand routing table
- D. independent stand physical or logical interface
Answer: B,C,D
NEW QUESTION 165
The label value 3 has a special meaning in the MPLS network , which means ______ .
- A. As a result of the forwarding equivalence class MPLS label forwarding entry of the label 3 , showing the device is the inverse of the forwarding equivalence class of the second hop device
- B. As a result of the forwarding equivalence class MPLS label forwarding entry of the label 3 , showing the device is the inverse of the forwarding equivalence class of the first hop device
- C. As a result of the forwarding equivalence class MPLS label forwarding entry into label 3 , indicates that the device is a reciprocal of the second hop forwarding equivalence class of device
- D. As a result of the forwarding equivalence class MPLS label forwarding entry into label 3 , showing the device is the inverse of the forwarding equivalence class of the first hop device
Answer: A,D
NEW QUESTION 166
In the EPON system, the port that the ONU device connects to the user is
- A. NNI
- B. UNI
- C. OLT
- D. ONU
Answer: B
NEW QUESTION 167
Which statement about traffic shaping is correct?
- A. flow amount of shaping may be applied to the inbound direction
- B. on packets matching traffic shaping shaping matching conditions, do not match the criteria of Discards packets
- C. stream traffic shaping will exceed the committed rate packet enqueue the buffer, when there are sufficient tokens and then transmits
- D. stream traffic shaping to reduce packet loss, delay increases
Answer: C,D
NEW QUESTION 168
In a VoIP network, which of the following factors are related to the bandwidth saved by VAD technology ?
- A. mesh network congestion degree
- B. selected encoding type used
- C. selected by signaling type
- D. said language and characteristics of the speaker
Answer: B,D
NEW QUESTION 169
The configuration commands on the MSR router are as follows:
acl number 2003
rule 0 permit source 192.168.0.0 0.0.0.255
#
traffic classifier 1operator or
if-match acl 2003
#
traffic behavior 1
filter den
#
qos polic 1
classifier 1behavior 1
#
interface GigabitEthernet0/1
port link-mode route
ip address 192.168.1.1 255.255.255.0
qos appl polic 2 outbound
Then when the source address are 192.168.2.2 , 192.168.0.2 the packets from the port G0 / 1 forwarding outwardly, the following statement is correct _____
- A. Packets with the source address of 192.168.2.2 are forwarded normally
- B. Forwarding of packets with the source address of 192.168.0.2 is blocked
- C. Forwarding of packets with the source address of 192.168.2.2 is blocked
- D. Packets with the source address of 192.168.0.2 are forwarded normally
Answer: A,B
NEW QUESTION 170
QoS can determine which specific behavior set a packet belongs to by _____ .( Choose one or more )
- A. matching with 802.1x
- B. matched with IP addresses , the MAC address , the VLAN number, protocol type, port number of the transport layer
- C. match with COS
- D. Configure the trusted port priority or packet priority on the interface
- E. match with DSCP
- F. match with IP Precedence
Answer: E
NEW QUESTION 171
In L2TP VPN , LAC ( LATP Access Concentrator , L2TP access concentrator ) receives the IP data packet sent from the remote system to the server , and needs to encapsulate the data packet and send it to LNS ( L2TP Network Server , L2TP) Network server ) , the encapsulation format of the data packet transmitted between LAC and LNS is
- A. Private network data packet ->PPP header ->UDP header ->L2TPT header -> Public network IP header
- B. Private network data packet ->PPP header ->UDP header -> public network IP header ->L2TPT header
- C. Private network data packet ->L2TPT header ->PPP header ->UDP header -> public network IP header
- D. Private network data packet ->PPP header ->L2TPT header ->UDP header -> Public network IP header
Answer: A
NEW QUESTION 172
AAA supports the authorization method of ______ .
- A. RADIUS authorization
- B. Direct access authorization
- C. HWTACACS authorization
- D. This authorizes
Answer: A,B,C,D
NEW QUESTION 173
OSPF a process agreement with a VPN After binding, will be out now ______ .
- A. The OSPF into the process only to the VPN are connected to bind the interface CE device establishes OSPF neighbors
- B. The OSPF process routes learned only exists in the VPN 's routing table
- C. The routes learned by the OSPF process will exist in the public network routing table
- D. The OSPF process and it can only be with the OSPF process ID of the same CE build equipment OSPF neighbor living
Answer: A,B
NEW QUESTION 174
In L2TP networking, false set LAC and LNS are case has been in the public network, and are correct Unicom, if Tunnel construction legislation fails, the possible causes are
- A. On the LAC side , the address of the LNS is incorrectly set
- B. There is no L2TP group set on the LNS end that can receive the opposite end of the tunnel
- C. Tunnel verification fails
- D. The username and password set on the LAC side are incorrect
Answer: A,B,C
NEW QUESTION 175
On a router perform row displa'interface tunnel explicit shown GRE tunnel interface as follows :
<Router>displa interface Tunnel 0
Tunnelo current statle: UP
Line protocol current state: UP
Description: Tunnel 0 Interface
T he Maximum transmit Unit is 1476
Internet Addess is 192.1.1.1/24 Primar.
Encapsulation isTUNNELT aggregation ID not- et
Tunnel source l0.1.11.1 destination 10.1.13.1
Tunnel keeepalive enable Period ( 10 s ) , Retries ( 3 )
Tunnel protocol/transport GRE/IP.
GRE key disable
Checksumming of GRE packets disabled
Last 300 seconds input:.0 btes/secl 0 packet/sec.
Last 300 seconds output:..0 bytes/sec , 0 packets/sec.
4 packets input 72bytes.
0 input error
1 packets output , 24 btes
0 0utput error
From the above information, we can know ____ .( Choose one or more )
- A. The tunnel interface is in the UP state, and the MTU is 1467 bytes
- B. tunnel channel source lP address of 10.1.11.1
- C. The Keepalive function is enabled on the Tunnel interface .Once the router fails to receive the Keeplive packets from the other party within 30s , the tunnel is considered unavailable
- D. tunnel track start validation, verification does not start
Answer: B,C
NEW QUESTION 176
The process of LDP session establishment is ______ .
- A. o Habitat found -> establish TCP connection -> establish a session -> session maintenance
- B. o Habitat found -> establish a session -> establish TCP connection -> session maintenance
- C. Jian Li session -> Neighbor Discovery -> establish TCP connection -> session maintenance
- D. Jian Li TCP connection -> Neighbor Discovery -> establish a session -> session maintenance
Answer: A
NEW QUESTION 177
Factors that affect VoIP voice quality include ______ .
- A. selected by signaling type
- B. Packet loss on IP network
- C. choose a type of numbering
- D. back sound
Answer: B,C,D
NEW QUESTION 178
A company PBX via an E1 connection line to the telephone network operators, due to expansion of the company's size, complicated by the need to meet the 50 -way voice calls, you need to apply for ____ root E1 line ? ( Fill in Arabic numerals )
Answer:
Explanation:
1
NEW QUESTION 179
In BGP MPLS VPN in the network, the two PE respectively connected the two branches of the same private network user, is required between visits two divisions, and the BGP MPLS VPN is not part of the network Agency BGP reflector, then the two sets of PE between devices will necessarily need to establish which of the following neighbor relationship ?
- A. OSPF multi-instance neighbor
- B. MPLS LDP neighbor
- C. OSPF neighbor
- D. MP-BGP neighbor
Answer: D
NEW QUESTION 180
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