GB0-191-ENU Dumps
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Constructing Small and Medium Sized Enterprise Network
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Two empty-configured MSR routers RTA and RTB are interconnected back to back through their respective Serial1 / 0 interfaces. Make the following configurations on the two routers:
RTA: skip
[RouterA-Serial1/0] link-protocol fr ietf [RouterA-Serial1/0] ip address 10.1.1.1 30
[RouterA-Seria11 / 0] fr map ip 10.1.1.2 30 RTB: [RouterB-Serial1/0] link-protocol fr ietf [RouterB-Serial1/0] interface serial0/0.1 [RouterB-Serial1/0.1] ip address 10.1.1.2 30
[RouterB-Serial1/0.1] fr map ip 10.1.1.1 30
The physical link between the routers is good, so the following statement is correct . (Multiple choices) A . two routers are not configured DLCI for , in RTA No ping through RTB
B . In the RTA No ping through 10.1.1.2
C . In the RTA on can ping through 10.1.1.2
D . In the above configuration, if only the type of serial interface 0 / 0.1 on RTB is changed to P2MP , then 10.1.1.2 cannot be pinged on RTA
E . In the above configuration, if only the type of serial interface 0 / 0.1 on RTB is changed to P2MP , then 10.1.1.2 can be pinged on RTA
Question: 105
ping is actually an application developed based on the protocol. A . ICMP
B . IP
C . TCP D . UDP
The ping function is implemented based on the ICMP protocol: after the source sends an ICMP echo request ( ECHO-
REQUEST ) message to the destination, the destination is judged based on whether the destination ICMP echo reply ( ECHO-REPLY ) message is received It is reachable, for the purposes of end up, then according to the number of packets sent, number of packets received response to determine the quality of the link, according to ping between the destination packet round-trip time to determine the source of the " Distance " .
The two routers of the customer are connected back to back through V.35 cable, and one of the routers has the following interface information: [MSR-Serial0 / 0] display interface Serial 0/0
Serial0/0 current state: UP Line protocol current state: UP Description: Serial6/0 Interface
The Maximum Transmit Unit is 1500 Hold timer is 10(sec) Internet Address is 6.6.6.1/30 Primary
Link layer protocol is PPP LCP opened IPCP opened
From the above information, you can know . (Multiple choices)
A . This router has completed PPP negotiation with the remote device and successfully established a PPP link
B . The PPP PAP or CHAP authentication and verification options are successfully completed between this router and the remote device
C . on this router can already ping through the peer address 6.6.6.2 that can not be judged by whether the verification, so the end does not necessarily address can ping through
D . The interface information prompts that the second IP address subordinate can also be configured under this interface
Question: 107
Normally, the router will fragment packets longer than the interface MTU .
In order to detect the line MTU , you can ping the destination address with the parameter . A . Ca
B . Cd C . Cf D . Cc
-a ―――― With source
-f ――――- Do not allow fragmentation of ICMP Echo Request messages
-tos ―――- type of service tos field defaults to 0 ( 0-255 )
-t ――――- Message timeout time, default 2000 ms
-s ―――― Message size, default 56 bytes ( 20-8100 )
-c ―――― Number of packets, default 5
-h ―――― Specify the packet ttl value, the default is 255 ( 0-255 )
-m ―――― Specify the time interval for sending messages, the default is 200 milliseconds ( 1-65535 )
Question: 108
WLAN ( Wireless LAN ) is the product of the combination of computer network and wireless communication technology. Which of the following are WLAN technical standards ? (Multiple choice)
A . 802.11a B . 802.11b C . 802.11c D . 802.11g
Maximum transmission rate
Question: 109
The following description of the characteristics of the router is correct . (Multiple choices) A . Is the network layer device
B . Route forwarding based on link layer information C . Provide rich interface types
D . Can support multiple routing protocols
Work on the bottom three
Route forwarding based on network layer information
Rich interface types, can be used to connect networks of different media
Question: 110
The following statement about the OSI reference model is correct . A . The data at the transport layer is called a frame ( Frame )
B . The data at the network layer is called a segment . C . data link layer called packets ( Packet )
D . The data in the physical layer is called bit ( Bit )
Question: 111
There is a default route in the router’s routing table, the destination network segment and mask are 0.0.0.0 , and the next hop is the router’s S0 / 0 interface, then the following description of this route is correct . (Multiple choices)
A . When the router receives a packet destined to the destination address 120.1.1.1 , if there is no other exact match in the router table, then the packet will match this default route
B . The mask of this route is the shortest, so only when no other route matches the data packet, the data packet will be forwarded according to the default route.
C . The metric of this route may be 3
D . The priority of this route may be 100
Static default route metric value is 0 , it is impossible protocol default metric route may be . 3 , Stub region:
Set stub rear region, to produce a three lsa default route, the default route metric similar import external routes RTD interface cost is set to 2 , the effect in question can reach
Question: 112
An empty configuration MSR router RTA is connected to two routers RTB and RTC running in OSPF Area 0 through GE0 / 0 and GE1 / 0 respectively . RTA interface GE0 / 0 and GE1 / 0 of the IP addresses
are 192.168.3.2/24 and 192.168.4.2/24 . Add the following configuration on RTA :
[MSR-ospf-1] area 0.0.0.0
[MSR-ospf-1-area-0.0.0.0]network 192.168.0 0.0.3.255
[MSR-GigabitEthernet0/0]ospf cost 2
[MSR-GigabitEthernet1/0]ospf dr-priority 0
Then the correct description about the above configuration is . (Multiple choices) A . This configuration MSR router the GE0 / 0 , GE1 / 0 on both started OSPF
B . This configuration only MSR router GE0 / 0 interface launched OSPF
C . RTA may become the DR of the network segment where the two GE interfaces are located
D . RTA can only become the DR of the network segment where one of the GE interfaces is located E . modify the interface GE0 / 0 of Cost does not affect the OSPF adjacency establishment of
[MSR-ospf-1-area -0.0.0.0] network 192.168.0 0.0.3.255 mask 22 , as described in the interface
segment 0.0 , 1.0 , 2.0 , 3.0 Startup ospf G1 / 0 interface priority to 0 , The interface with priority 0 does not participate in DR , BDR election
Question: 113
The device that realizes network interconnection on the network layer is . A . Router
B . Switch C . Hub
D . Repeater
Routers and Layer 3 switches
Question: 114
The two empty MSR routers are connected by the way shown in the figure. By configuring the IP address, the GE0 / 0 interfaces of the two routers can communicate with each other.
Now the following configurations are added to the two routers: RTA:
[RTA]ospf
[RTA-ospf-1]area 0
[RTA-ospf-1-area-0.0.0.0]network 192.168.1.1 0.0.0.3
[RTA-GigabitEthernet0/0]ospf dr-priority 2
DAF:
[RTB]ospf [RTB-ospf-1]area 0
[RTB-ospf-1-area-0.0.0.0]network 192.168.1.1 0.0.0.3 [RTB-GigabitEthernet0/0]ospf dr-priority
Then after the OSPF neighbor state is stable, .
A . OSPF interfaces have the same priority, and no OSPF DR election is performed on the 192.168.1.0/30 network segment
B . Of the two routers, one is DR and one is BDR
C . Of the two routers, one is DR and the other is DRother
D . The neighbor status of the two routers is FULL and 2-Way
[ Interface ] ospf dr-priority ( 0-255 ) modify the interface priority, the default is 1 , the non-participation election with priority 0 is only broadcast network, NBMA network only has DB , BDR election, Gigabit Ethernet default
interface Broadcast modify ospf network type: [ interface ] ospf network-type () DR , BDR election is for the interface, network segment, not RT is DR , BDR . By comparing the interface priority (the bigger the better), the router id is
the same (the bigger the better) the other DR2 status stays at 2-way