【单选题】
OLT主控盘中的系统ONU ACL功能是针对以下哪种流的规则___
A. 上行流
B. 下行流
C. 上行和下行流
D. 该规则无效
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相关试题
【单选题】
带宽分配时，单个pon口下所有onu分配的固定带宽之和不能超过___
A. 1.25G
B. 1G
C. 2.5G
D. 500K
【单选题】
如何解决同一OLT下，同一vlan内，不同ONU下同网段业务互通问题。___
A. 使用standard类型vlan
B. 使用ARP代理功能
C. 使用super vlan做三层接口
D. 关闭二层隔离开关
【单选题】
下面哪种情况下，ONU设备的业务全部中断 ___
A. POWER灯常亮
B. RUN灯闪烁
C. AUTH灯闪烁
D. LINK灯常亮
【单选题】
ONU的光功率范围为 ___
A. 发送光功率：＋4～－1 （1310nm）l 接收光功率：－8～－24 （1490nm）
B. 接收光功率：－6～－27 （1310nm） 发送光功率：＋7～＋2 （1490nm）
C. 接收光功率：－1～－24 （1310nm） 发送光功率：＋2～－3 （1490nm）
D. 发送光功率：＋4～－1 （1310nm） 接收光功率：－8～－26 （1490nm）
【单选题】
FTTB设备在接入IMS时，与IMS对接时采用___方式对接。
A. IMPI
B. IMEI
C. user、password
D. random
【单选题】
GPON系统中，OLT通过___管理维护通道对终端设备进行配置和维护。
A. TR069
B. SNMP
C. OAM
D. OMCI
【单选题】
在GPON的网络保护中， 以下对Type A和Type B描述正确的是:___
A. Type A和Type B都是保护主干光纤
B. Type A 保护分支光纤，Type B保护主干光纤
C. Type A保护主干光纤，Type B保护分支光纤
D. Type B需要1：N的分光器，Type A需要2：N的分光器
【单选题】
简单定位SDH传输系统故障的方法，按优先级从先到后顺序是___a.使用网关进行故障定位 b、单站自环测试 c、逐段环回方法，注意单双向业务 d、替换单板方法
A. a b c d
B. d a b c
C. a c b d
D. c b a d
【单选题】
FTTH业务出现退出服务、业务中断故障不可能是那种原因造成的：___
A. 接入设备故障
B. 光路故障
C. CMNET网络故障
D. 分光器掉电
【单选题】
利用支路板的各种自环功能来隔离设备故障和连线故障时，要判断是设备故障，应用___功能；要判断是连接电缆故障，应用（ ）功能。①外环回 ②内环回 ③不环回 ④清除环回
【单选题】
以下哪种情况不会造成PON下的所有ONU故障：___。
A. PON口至分光器的光缆中断；
B. PON口下某个分光器至ONU的光缆中断；
C. PON口下的某个ONU长发光；
D. PON所在单板故障；
【单选题】
在FTTX业务出现退出服务、业务中断故障后，现场工程师应通常首先采用以下那种方法来进行故障定位___
A. 在上层各级设备依据不同业务的VLAN起三层接口互ping测试
B. 测试ONU光功率
C. 拔插单板
D. 重启设备
【单选题】
关于此告警，下列说法不正确的是：___
A. 这是一条过时告警，当前告警应该使用show alarm pool命令查看。
B. 这是一条关于ONU离线的告警，gpon-olt_1/2/1下所有ONU 均离线。
C. 产生告警的设备应该是C300，因为shelfNO是１。
D. 产生告警的设备是C220的EPFC板。
【单选题】
ONU面板上的LOS灯是红灯时,表示___
A. 此ONU坏了
B. 光路有问题
C. ONU工作正常
D. 此ONU没有授权
【单选题】
基于MPLS标签最多可以标示出___类服务等级不同的数据流。
【单选题】
CMNet 省网汇接层采用___或者三角型结构接入本省的 CMNet 骨干网节点。
A. 口字型
B. 总线型
C. 环形
D. 树形
【单选题】
CMNet 省网与骨干网之间采用外部路由协议___通告业务路由。
A. IGP
B. EBGP-4
C. ISIS
D. IBGP
【单选题】
OTN系统进行网元电交叉与业务配置时，以下描述正确的是___
A. 支路盘宿端口业务类型必须与线路盘源端口业务类型一致
B. 支路盘宿端口业务类型必须与线路盘宿端口业务类型一致
C. 支路盘源端口业务类型必须与线路盘源端口业务类型一致
D. 支路盘宿端口业务类型可以与线路盘源端口业务类型不一致
【单选题】
A级的互联网专线,若采用PON承载技术，在OLT与分光器之间采用___保护。
A. 1+1
B. 1：1
C. 主纤
D. 备纤
【单选题】
配置思科路由器E0/1口的IP地址指令是___
A. ip address 1.1.1.1 255.255.255.0
B. ip address 1.1.1.1
C. ip 1.1.1.1
D. ip 1.1.1.1 255.255.255.0
【单选题】
PTN采用24位来标志网元ID，其中高8位是___，低16位是（）；其中（）的作用是用来标识一个区域内的PTN网元。
A. 扩展ID，基础ID，基础ID
B. 基础ID，扩展ID，基础ID；
C. 基础ID，扩展ID，扩展ID
D. 扩展ID，基础ID，扩展ID
【单选题】
在配置单板的以太网接口时，为了能在以太网接口和数通设备之间建立连接，下列哪项是必需的？___
A. 自协商模式
B. 流控功能
C. 端口使能状态
D. LPT功能
【单选题】
对ZXONM E100和ZXONM E300网管系统而言，MCU 和NCP之间的接口是___
A. Q接口
B. Q3接口
C. S接口
D. F接口
【单选题】
S385配置1：N保护时，支持跨交叉板两侧的槽位区间完成同一组TPS保护的单板是：___
A. E1/T1单板
B. E3单板
C. FE单板
D. STM-1E单板
【单选题】
如果要在网管上建立GE级别的业务路径，下面哪一个不是必需的？___
A. 完整的Och路径
B. 完整的ODU1路径
C. 完整的OMS路径
D. 完整的OSC路径
【单选题】
在OptiX PTN中，MPLS Tunnel 标签是由哪个信令协议分配的? ___
A. LDP
B. CR-LDP
C. RSVP-TE
D. ISIS-TE
【单选题】
APS协议倒换时，K1字节的源节点代码表示意义为___
A. 信号失效
B. 桥接
C. 倒换
D. APS协议动作的源接点
【单选题】
当路由器转发IP包时，需根据___确定下一跳
A. IP包头中的目的地址
B. IP包头中的源地址
C. IP包头中的所有内容
D. 以上都不是
【单选题】
将IP地址映射为MAC地址的协议是___
A. ARP
B. ICMP
C. UDP
D. SMTP
【单选题】
PING命令是用___协议实现的。
A. SMTP
B. TCP
C. UDP
D. ICMP
【单选题】
GPON系统中OLT通过___管理维护通道对ONT终端设备进行配置和维护。( )
A. OMCI
B. OAM
C. TR069
D. SNMP
【单选题】
光纤熔接点的衰减值一般小于（ ）dB。___
A. 0.1
B. 0.2
C. 0.3
D. 0.4
【单选题】
负责签约ICP的系统对接与内容注入，并为边缘节点提供内容分发与回源服务是以下哪个网元？___
A. CDN控制调度中心
B. CDN内容中心
C. 内容管理平台
D. 边缘服务节点
【单选题】
CDN主动分发模式时，由内容中心将内容按条件推送到边缘节点，流量终结在哪个节点？___
A. 边缘节点
B. 内容中心
C. 溯源中心
D. 调度中心
【单选题】
为有效提升CDN服务效率，CDN调度技术会将冷门小文件资源存在以下哪个节点供用户访问？___
A. 区县节点
B. 地市节点
C. 省中心节点
D. 源站
【单选题】
行业视频的国家标准协议是（ ）。 ___
A. onvif
B. GB28181
C. DB33
D. SDK
【单选题】
以下属于行业视频智能分析能力的是（ ）。 ___
A. 录像
B. 告警
C. 调度
D. 烟火检测
【单选题】
物联网平台包含DMP和（ ）。 ___
A. AEP
B. 物联卡
C. 模组
D. IOT
【单选题】
DMP的主要功能是（ ）。___
A. 管理物联网终端
B. 管理NB-IOT
C. 管理终端消息
D. 管理终端连接
【单选题】
以下不属于物联网平台业务能力的是（ ）。___
A. 终端管理
B. 数据存储
C. 事件触发
D. 物联卡发放
推荐试题
【单选题】
How is management traffic isolated on a Cisco ASR 1002？___
A. Traffic isolation is done on the vlan level
B. There is no management traffic isolation on a Cisco ASR 1002
C. Traffic is isolated based upon how you configure routing on the device
D. The management interface is configured in a special vRF that provides traffic isolation from the default routing table
【单选题】
Which statement about NaT table evaluation in the asa is true？___
A. After-auto NAT polices are appl d first
B. Manual NAT policies are applied first
C. the asa uses the most specific match
D. Auto NAT policies are applied first
【单选题】
Which information can you display by executing the show crypto ipsec sa command？___
A. ISAKMP SAs that are established between two peers
B. recent changes to the IP address of a peer router
C. proxy infor mation for the connection between two peers
D. IPsec SAs established between two peers
【单选题】
How can you prevent NAT rules from sending traffic to incorrect interfaces？___
A. Assign the output interface in the NAT statement
B. Add the no-proxy-arp command to the nat line.
C. Configure twice NAT instead o bject NAT. 5
D. Use packet-tracer rules to reroute misrouted NAT entries.
【单选题】
What term can be defined as the securing， control， and identification of digital data？___
A. cryptography
B. crypto key
C. cryptoanalysis
D. cryptology
【单选题】
Which feature in the dNS security module provide on and off network DNS protection？___
A. Data Loss Prevention
B. Umbrella
C. Real-time sandboxing
D. Layer-4 monitoring
【单选题】
Which a dverse consequence can occur on a network without BPDu guard ?___
A. The olde st switch can be elected as the root bridge
B. Unauthorized switches that are connected to the network can cause spanning-tree loops
C.
D. ouble tagging can cause the switches to experience CAM table overload.
【单选题】
What configuration is required for multitenancy ?___
A. shared infrastructure
B. multiple carriers
C. co-located resources
D. multiple separate zones
【单选题】
Why does ISE require its own certificate issued by a trusted CA？___
A. ISEs certificate allows guest devices to validate it as a trusted network device
B. It generates certificates for guest devices ba sed on its own certificate
C. It requests certificates for guest devices from the Ca server based on its own certificate.
D. ISE's certificate allows it to join the network security framework
【单选题】
which attack involves large numbers of ICMP packets with a spoofed source IP address？___
A. smurf attack
B. Teardrop attack
C. Nuke attack
D. SYN Flood attack
【单选题】
Which statement about interface and global access rules is true？___
A. Interface access rules are processed before global access rules.
B. Global access rules apply only to outbound traffic， but interface access rules can be applied in either direction
C. The implicit allow is proce ssed after both the global and interface access rules
D. If an interface access rule is applied， the global access rule is ignored
【单选题】
Which type of malicious software can create a back-door into a device or network？___
A. bot
B. worm
C. virus
D. Trojan
【单选题】
Which security term refers to the like lihood that a weakness will be exploited to cause damage to an asset？___
A. threat
B. risk
C. countermeasure
D. vulnerability
【单选题】
Which IPS detection method examines network traffic for preconfigured patterns？___
A. signature-based detection
B. honey-pot detection
C. anomaly-based detection
D. policy-based detection
【单选题】
What is an advantage of split tunneling ？___
A. It allows users with a VpN connection to a corporate network to access the internet with sending traffic across the cor porate network.
B. It allows users with a vpn connection to a corporate network to access the internet by using the vPN for security.
C. It protects traffic on the private network from users on the public network
D. It enables the VPN server to filter traffic more efficiently
【单选题】
Which IDS/IPS state misidentifies acceptable behavior as an attack ？___
A. false negative
B. true positive NEKA G
C. true negative
D. false positive
【单选题】
What is the maximum num ber of methods that a single method list can contain？___
【单选题】
Which command enables authentication at the oSPFv2 routing process level？___
A. ip ospf authentication message-digest
B. area 0 authentication message-digest
C. ip ospf message-digest-key 1 mds Cisco
D. area 0 authentication ipsec spi 500 md5 1234567890ABCDEF1234567890ABCDEF
【单选题】
Which type of firewall monitors a nd protects a specific system？___
A. firewall
B. application firewall
C. stateless firewall wvp
D. personal firewall
【单选题】
On an ASA， which maps are used to identify traffic？___
A. Route maps
B. Policy maps
C. Class maps
D. Service maps
【单选题】
Which type of social engineering attack targets top executives？___
A. whaling
B. vishin
C. spear phishing ng
D. baiting
【单选题】
What is the minimum Cisco lOS version that supports zone-based firewalls？___
A. 12.1T
B. 15.1
C. 15.0
D. 124
【单选题】
In which type of attack does an attacker overwrite an entry in the CAM table to divert traffic destined to a legitimate host？___
A. DHCP spoofing
B. ARP spoofing
C. CAM table overflow
D. MAC spoofing
【多选题】
Which two attack types can be prevented with the impleme ntation of a Cisco IPS solution？___
A. DDos
B. man-in-the-middle
C. worms
D. ARP spoofing
E. VLAN hopping
【多选题】
choose four___
A. DHCP snooping ——————————blocks DHCP messages
B. Dynamic ARP inspection——————verifies IP-to-MAC traffic on untrusted ports
C. IP sources guard ——————————provides layer 2 interface security with ports ACLs
D. Port security————————————mitigates MAC-address spoofing at the access interface
【多选题】
choose four___
A. Step1————————run the system setup wizard
B. Step2————————add an authentication realm
C. Step3————————configure identity management
D. Step4————————configure directory group
【多选题】
What are two advanced features of the Cisco AMp solution for endpoints ___
A. contemplation
B. foresight
C. sandboxing
D. reputation
E. reflection
【多选题】
Which two characteristics of RADIUS are true？___
A. It encrypts only the password between user and server.
B. It uses TCP ports 1812/1813
C. It uses UDP ports 1812/1813.
D. It uses UDP port 49
E. It uses TCP port 49
【多选题】
What are two challenges of using a network-based IPS？ ___
A. It is unable to determine whether a detected attack was successful
B. It requires additional storage and proce ssor capacity on syslog servers
C. As the network expands， it requires you to add more sensors.
D. It is unable to detect attacks across the entire network
E. It must support multiple operating systems.
【多选题】
What are two default be haviors of the traffic on a zone-based firewall？___
A. Traffic within the self -zone uses an im plicit deny all.
B. All traffic between zones is implicitly blocked
C. Communication is allowed between interfadAss that are members of the same zone
D. Communication is blocked between interfaces that are members of the same zone
E. The CBAC rules that are configured on router interfaces apply to zone interfaces
【多选题】
Which two advantages does the on-premise model for MDM deployment have over the cloud-based model？___
A. The on-premise model is easier and faster to de ploy than the cloud-based model
B. The on-premise model is more scalable than the cloud-based model
C. The on-premise model is generally less expensive than the cloud-based model
D. The on-premise model generally has less latency than the cloud- based model.
E. The on-premise model provides more control of the MDM solution than the cloud
【多选题】
Which two actions can an end usts take to manage a lost or stolen device in Cisco ISE？ ___
A. Activate Cisco ISE End point Protection Services to quarantine the device.
B. Add the mac address of the device to a list of blacklisted devices
C. Force the device to be locked with a PIN
D. Request revocation of the digital certificate of the device.
E. Reinstate a device that the user previously marked as lost or stolen
【多选题】
Which two problems can arise when a proxy firewall serves as the gateway between networks？___
A. It can prevent content caching
B. It can limit application support
C. It is unable to prevent direct connections to other networks
D. It can cause reduced throughput.
E. It is unable to provide antivirus protection
【多选题】
When using the Adaptive Security Device Manager（ASDM）， which two methods are available to add a new root certificate？___
A. Use sCep
B. Install from SFTP server
C. Install from a file
D. Use Https
E. Use LDAP
【多选题】
Which two are considered basic security principles？___
A. Accountability
B. Redundancy
C. High Availabilit
D. Integrity
E. Confidentiality
【多选题】
Which two roles of the Cisco WSA are true？___
A. IPS
B. firewall
C. antispam
D. web proxy
E. URL filter
【单选题】
Which next-generation encryption algorithm supports four variants？___
A. SHA-2
B. SHA-1
C. MD5
D. HMAC
【单选题】
What aims to remove the abil ity to deny an action？___
A. Non-Repudiation
B. Accountability
C. Integrity
D. Deniability
【单选题】
Which statements about the native VLAN is true ？___
A. It is susceptible to VLAN hopping attacks.
B. It is the Cisco recommended VLAN for switch-management traffic
C. It is most secure when it is a ssigned to vLAn 1.
D. It is the cisco-recomme nded vlan for user traffic
【单选题】
There are two versions of IKE:IKEv1 and IKEv2. Both IKEv1 and IKEv2 protocols operate in phases IKEv1 operates in two phases. IKEv2 operates in how many phases？___
