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WorksheetsCAMS CarrierNetwork
Total questions: 99
Worksheet time: 59mins
The OSPF cost is carried in which of the following?
new extended BGP community
MED
Cost Field
none of the above
Which are the type of QoS Class Identifiers (QCI) in LTE network?
QCI 1
QCI 3
QCI 5
QCI 65
What is the Any Transport over MPLS AToM signaling protocol used between PE routers?
targetted ldp
igp signalling
Name the path options you can specify in MPLS TE? choose all the best options
explicit,
explicit with exclude address,
explicit with loose next address
dynamic
How many labels can reside in a label stack?
any number of labels can reside
32
64
97
What is the size of the Route Distinguisher (RD)?
32 bits
96 bits
56 bits
64 bits
What is the size of the Route Target (RT)?
32 bits
96 bits
56 bits
64 bits
Which router assigns the VPN label?
P
egress CE
egress PE
ingress CE
ingress PE
Which are the temporary identifiers during call flow procedure in Mobile Network?
IMSI International Mobile Subscriber Identity
GUTI Global Unique Temporary Identifier
P-TMSI Packet Temporary Mobile Subscriber Identity
TLDN Temporary Local Directory Number
When IPv6 is enabled on an interface which three multicast address does the configured interface automatically? Choose three
FF01::2
FEC0:1
FF02:0:0:0:0:1FF00:/104
FF02::1
FF01::1
Name the way you forward IP traffic into a TE tunnel?
static route
policy based routing
forwarding adjacency
autoroute announce
CBTS Class Based Tunnel Selection
What is OFDM Orthogonal Frequency Division Multiplexing and OFDMA Orthogonal Frequency Division Multiple Access?
multiple access technology
cellular technology
routing definition
mac learning technology
What are the components of MPLS TE? Choose all the correct answers:
packet forwarding
information distribution
path selection
signaling
Which of the following commands configure MPLS BGP to send extended communities? Choose Two
send-community standard
send-community extended
send-community both
send community extended
What are the technologies in LTE to initiate the call during data session?
CSFB, Circuit Switched Fallback
SRVCC, Single Radio Voice Call Continuity
IMS, IP Multimedia Subsystem
VoLTE, Voice over LTE
Which protocol is used to transport VPN labels between PE routers?
LDP
RSVP
MP-BGP
The Core IGP
Which of the following mechanisms keep overlapping address from doing so in MP-BGP?
RD
VPNv4
VPN
VRF
The router where the backup tunnel originates after the failure of the downstream link or node. It is this router that forwards traffic along the alternate path and notifies the headend router that the Primary LSP has issue?
PLR Point of Local Repair
RSVP
LDP and RSVP
LLDP
In MPLS header which field is used for QoS marking?
20 bits label field
3 bits exp field
1 bit bottom to stack field
8 bits TTL field
Which one of the following features is used to address problems associated with reusing the same AS number between customer sites?
AS path prepending
AS override
Maximum route
VC merge
Which of the following are used to prevent routing loop?
down bit
tag field
Routing bit
MED
Which feature allows an MPLS TE to be used by an IGP at the headend of the tunnel?
MPLS TE auto reroute announce
MPLS TE forwarding adjacency
generalized MPLS.
different service traffic engineering
What is the use of CHAP protocol in data communication?
point to point
authentication
data integrity
challenge handshake
Which destination IP address is used by LDP hello messages sent by adjacent peers?
224.0.0.1
224.0.0.2
224.0.0.9
224.0.0.10
Which protocol signaling is used in LTE architecture?
Diameter
TCAP
X2
GTP-U
How is an LSP path setup initiated?
By the head end using the RSVP signalization
By the tail end using the RSVP signalization
By the head end using the IGP signalization
By the tail end using the IGP signalization
SGSN supports establishments of a GTP-C GPRS Tunneling Protocol - Control Plane) direct tunnel between which node?
SGSN
GGSN
eNodeB
MME
Which two of the following tables contain label information choose two?
LIB
Main IP routing table
FLIB
LFIB
How many labels are used to forward VPLS traffic?
3
5
2
4
What is the main advantage of HVPLS over VPLS?
HVPLS provides redundancy
HVPLS provides security
HVPLS improves scalability
HVPLS allows use a broader use of protocols
Which of the following protocols is used to propagate VPN labels between edge routers?
TDP Tag Distribution Protocol
LDP Label Distribution Protocol
standard BGP with extended communities
MP-BGP Multi Protocol BGP
Which label value signal the penultimate LSR to penultimate hop popping (PHP)?
1
2
3
4
Where is the control word inserted in AToM (Any Transport over MPLS)?
inserted between VC label and the transport layer 2 frame
between header and trailer
between IP headers
in layer 2 frame
Why IPSEC VPN configure in SGSN/GGSN node?
traffic security
node communication
user authentication
route definition
How many route targets can you configure on a single VRF (Virtual Routing and Forwarding)?
Two (one import and on export).
The maximum is only limited by the router’s memory.
One export and as many imports as the router’s memory allows.
One import and as many exports as the router’s memory allows.
What condition must be met for the receiving PE router to install VPNv4 route into VRF?
Route Target (RT) of the received VPNv4 route must match one of the import RTs configured on the VRF.
Route Distinguisher (RD) of the received VPNv4 route must match one of the import RTs configured on the VRF.
What is via branch tag in SIP header?
the protocol name
protocol version
transport type
IP address of the UAC
What is LTE PCC QoS functions? Choose Two
PCRF
PCEF
OCS Function
OFCS Function
What does the FEC refer to in MPLS VPN?
IP destination network
MPLS ingress router
core if the MPLS network
VPN destination network
In layer 3 MPLS VPN implementation. If some of the VPNv4 routes on one PE router do not appear on another PE, what could be the problem?
RD mismatch between PE
RT export and import configuration error
RD export and import configuration error
VRF names mismatch between pe routers
What is the size of a VC label which is also known as PW ID?
32
63
16
96
How many nodes are there in IPSEC VPN?
1
2
3
4
How long in bits is the VPNv4 address?
32 bits
63 bits
16 bits
96 bits
RD cannot identify participation in more than one VPN. What is required to support complex MPLS VPN?
Route Targets
Route Distinguisher
IP Address
VPN
When implementing MPLS DS-TE on Cisco IOS XR routers, all aggregate Cisco MPLS TE traffic is mapped to which class type by default?
class-type 0 (bandwidth global pool)
class-type 1
(bandwidth subpool)
class-type 2 (bandwidth priority)
class type class-default (bandwidth best-effort)
TDP uses which well -known port number?
1024
511
711
646
GTP-C a direct tunnel between an RNC and the S-GW use for?
Control plane path management
tunnel management
mobility
creating maintaining and deleting tunnels
In MPLS-TE, The path setup is affected by the which of the following tunnel?
Prefic independent convergence
priority
affinity attributes
IGP cost
Correct statement regarding LSP? Choose Two.
As LSP in created for every routing protocol entry
Each LSP is bidirectional, that in packets traveling in the opposite detection use the name LSP
An IGP used to populate routing tables in all routes in an MPLS domain
LDP in used to propagate label and built LSPs
LDP uses which well-known port number?
1024
511
711
646
Which field in the MPLS nhim header used to support diff QoS marking?
IP precedence
DSCP
EXP
Label
S-Bit
Which protocol is used in CSFB between MME-MSC?
SGsAP (SGs Application Protocol)
SS7
MAC
S1
Which Cisco IOS command do you used to see what the swapped label is used and which labels are pushed onto received packet for a certain prefix?
show mpls forward table
shown mpls mac forwarding table
show mpls mac address forwarding table
show mpls routing forwarding table
SGSN support establishment on a GTP-U direct tunnel between which node?
RNC
SGW
PGW
MME
Engineer wants to config. MPLS TE Fast reroute with link protection on routers. Which methodology to reduce config on the point of local repair and successfully complete the task?
Config a backup tunnel on the PLR
Enable the auto tunnel backup feature
configure a backup tunnel on the tunnel headed router
Enable the auto tunnel primary feature
Advantage of OFDM and ODMA?
Allow simultaneous data to carrier
burst transmission
minimize frequency diversity
minimize interference within cell
Which are RSVP message types?
Path
Resv
PAthTear
ResvErr
PathErr
Which protocol provides fast link failure detection for all types of encapsulations?
prefix independent convergence
Carrier delay
nonstop forwarding
bidirectional forwarding detection
Relam-Routing table shall have following fields?
Realm-Name
Server-identifier
Expiration-time
Application-Id
Which value does VPLS use to make forwarding decisions?
Destination of the address of the packet
Destination MAC of the Ethernet Frame
Source IP address of the packet
Source MAC of the Ethernet Frame
Which are among LTE/4G Network interfaces?
S1-MME
SS7
SSCP
MAC
When redistributing route from MP-BGP to OSPF, which three are loop prevention mechanisms? choose 3.
Tag fields
Allow-as-in
Down bit
TTL
SSO
value of explicit NULL label?
3
2
1
0
Which are Nodes belongs to Evolved Packet Core?
MME
HSS
HLR
SGW
Which are cellular technologies?
GSM
CDMA
MAC
SS7
How are OSPF route attributes propagates across the MPLS VPN backbone?
OSPF priority is propagated in the EXP
Metric for external OSPF router is propagated in the Hop Count fields
OSPF area, route type and metric type propagated in an extended BGP community
OSPF cost or external metric propagates in the BGP MED attributes
Types of attributes in BGP?
Highest WEIGHT
Highest LOCAL_PREF
Prefer the path that was locally originated via a network or aggregate BGP
Shortest AS_PATH
Which IGP IP routing protocols support MPLS traffic engineering?
RIPv2
IS-IS
EIGRP
OSPF
Which CE-to-PE router protocol implements the dotn Bit as a loop prevention mechanism?
OSPF
BGP
EIGP
RIPv2
A service provider is implementing Ethernet solutions for clients that are not being provisioned within the MPLS core network. Which solutions allows the service provider to complete Ethernet circuit provision in the scenario?
L2TPv3
VPLS
AToM
PPPoE
Diameter AVPs carrier which information?
Authentication Data
Security data
Routing information
Data pertaining to application
Use of Phase2 in IPSEC?
Data security
Packet encryption
Subnet communication
Data integrity
GTP-U direct tunnel Between and RNC and the S-GW use?
Primary PDP activation
Intra SGSN routing area update without S-GW change
Service request procedure
Location Update
Which 2 statements are correct?
LSP are bidirectional
LSPs are Unidirectional
LDP advertise labels of the entire LSP
LDP advertise labels only for individual segments in LSP
VRF definition created at which node in PC/EPC?
PE
CE
GGSN
PGW
which Solution can use to extend the ethernet solutions within the MPLS core network?
PPPoE
AToM
VPLS
L2TPv3
Which protocol is used between RNC to SGSN tunneling?
GTP-C (Control plane)
GTP-U (User plane)
SS7
MAC
Which RSVP message is used to trace the path through the network, checking the resource availability at each stage and storing the path as it goes?
rsvp path
rsvp resv
path_tear
path_err
Which command enables extended community propagation for vpnv4 MP-BGP session?
neighbor <ip-address> send-community extended
neighbor <ip-address> send community extended
neighbor <ip-address> send-community both
neighbor <ip-address> send community both
Why APN is required in data communications? Choose all that applies
to attach to network
to detach to network
for messagi routing
for signalling
BGP AS number is mapped to which?
down bit
tag field
routing bit
none of the above
How the route target information attached to a vpnv4 route?
mpls label field
mpls exp bit
route tags
extended bgp communities
Diameter protocol maintains which two tables in LTE network
peer table
signaling table
routing table
ream based routing table
session table
what is mpls te?
only the ingress LSR must see the entire topology of the network
every LSR needs additional information about links in the network available resource and constraints
every core router must be able to create an lsp tunnel on demand
both RSVP and CR LDP are used in conjunction to establish the TE tunnels to propagate the labels
What ISIS TLVs are used to support MPLS TE? Choose Three
TLV 22 – Extended IS Reachability
TLV 10 – Authentication Information
TLV 134 – Router ID
TLV 132 – IP Interface Address
TLV 135 – IPv4/IPv6 TE Reachability
APN consists of which identifier?
operator
network
node
country
what type of ipv6 address is FF05::2:260:8F908?
multicast temporary site local
multicast permanent node link local
multicast permanent site local
multicast permanent link local
Which layer 2 control protocols can be tunneled across the VPLS network?
cdp
stp
vtp
vlan
Ware the protocols used in E-UTRAN (Evolved UMTS Terrestrial Radio Access Network)?
PDCP
RRC
MAC
GTP-C
What is the value of the router alert label?
1
2
3
4
In forwarding plane process what is true about the label in frame mode mpls?
32 bit label with an 8 bit label field
32 bit label with a 20 bit label field
20 bit label with a 3 bit bottom stack
20 bit label with a 1 bit ttl field
In which two ways can H-VPLS be implemented?
802.1Q (dot1q) tunneling
MPLS pseudowires between N-PEs and U-PEs in the access layer
Diameter is an application layer protocol which distinguishes into two connections
transport connection
physical connection
diameter connection
ip connection
using ospf as the ce-pe routing protocol when and whcih router will set the down bit?
the pe router will set the down bit when redistributing from mp bgp into ospf
the pe router will set the down bit when distributing routes from ospf into MP BGP
the ce router will set the down bit when propagating the ospf route to the PE router
the pe router will set he down bit when propagating the ospf route to the ce router
how is route traced attached to a vpnv4 route?
using extended bgp community
using mpls label field
using mpls exp bits
using rd field
What is the max reservable bandwidth per interface on mpls te by default?
75
100
50
25
what is the use of phase 1 in ipsec vpn?
packet monitoring
packet filtering
tunnel monitoring
signaling
what are the branch id and tag id in SIP?
help proxies to match responses to forked requests
tags are used by the uas to distinguish multiple final responses from different uas
mac learning
packet forwarding
what is AS and how do i obtain one?
protocol which uniquely identifies the network
to advertise the route
a single technical administration that has a unique routing policy
is multi homed to the public internet
