【单选题】
Which type of attack does a proxy firewall protect against ？___
A. cross-site scripting attack
B. worm traffic
C. port scanning
D. DDoS attacks
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相关试题
【单选题】
When an administrator initiates a device wipe command from the ISE， what is the immediate effect？___
A. It requests the administrator to choose between erasing all device data or only managed corporate data.
B. It requests the administrator to enter the device pin or password before proceeding with the operation
C. It notifies the device user and proceeds with the erase operation
D. It immediately erases all data on the device
【单选题】
What is a valid implicit permit rule for traffic that is traversing the ASa firewall？___
A. ARPs in both directions are permitted in transparent mode only
B. Unicast IPv4 traffic from a higher security interface to a lower security interface is permittee in routed mode only.
C. Unicast IPv6 traffic from a higher security interface to a lower security interface is permitted in transparent mode only.
D. Only BPDUs from a higher security interface to a lower secur ity interface are permitted in transparent mode.
E. Only BPDUs from a higher security interface to a lower secur ity interface are permitted in routed mode
【单选题】
A specific URL has been identified as containing malware. What action can you take to block users from accidentally visiting the URl and becoming infected with malware ？___
A. Enable URL filtering on the perimeter router and add the URls you want to block to the router's local URL list
B. Enable URL filtering on the perimeter firewall and add the URls you want to allow to the router's local URL list.
C. Enable URL filtering on the perimeter router and add the URls you want to allow to the firewall's local URL list
D. Create a blacklist that contains the URl you want to block and activate the blacklist on the perimeter rout
E. Create a whitelist that contains the URLs you want to allow and activate the whitelist on the perimeter router.
【单选题】
How does PEAP protect the EAP exchange ？___
A. It encrypts the exchange using the server certificate
B. It encrypts the exchange using the client certificate
C. It validates the server-supplied certificate,and then encrypts the exchange using the client certificate
D. It validates the client-supplied certificate,and then encrypts the excha nge using the server certificate
【单选题】
Which feature of the Cisco Email Security Appliance can mitigate the impact of snowshoe spam and sophisticated phishing attacks？___
A. contextual analysis
B. holistic understanding of threats
C. graymail management and filtering
D. signature-based IPS
【单选题】
Refer to the exhibit【nat (inside,outside)dunamic interface】 Which translation technique does this configuration result in？___
A. DynamIc PAT
B. Dynamic NAT
C. Twice NAT
D. Static NAT
【单选题】
Refer to the exhibit which are repre sents the data center？___
【单选题】
While trouble shooting site-to-site VPN， you issued the show crypto isakmp sa command. What does the given output show？___
A. IKE Phase 1 main mode was created on 10.1.1.5， but it failed to negotiate with 10.10 10.2
B. IKE Phase 1 main mode has successfully negotiated between 10.1.1.5 and 10.10..
C. IKE Phase 1 aggressive mode was created on 10.1.1.5， but it failed to negotiate with
【单选题】
Refer to the exhibit All ports on switch 1 have a primary vLan of 300 Which devices can host 1 reach？___
A. host 2
B. server
C. host 4
D. other devices within VLAN303
【单选题】
Which option is the cloud-based security service from Cisco the provides URL filtering， web browsing content security， and roaming user protection？___
A. Cloud Web service
B. Cloud Advanced Malware Protection
C. Cloud We b Security
D. Cloud Web Protection
【单选题】
How can you detect a false negative on an IPS？___
A. View the alert on the ips
B. Review the ips log
C. Review the is console
D. Use a third- party system to perform penetration testing.
E. Use a third- party to audit the next generation firewall rules
【单选题】
If a switch port goes directly into a blocked state only when a superior BPDU is received， what mechanism must be in use？___
A. STP BPDU guard
B. Loop guard
C. EtherChannel guard
D. STP Root guard
【单选题】
what improvement does EAP-FASTv2 provide over EAP-FAST？ ___
A. It allows multiple credentials to be passed in a single EAP exchange.
B. It supports more secure encryption protocols
C. It allows faster authentication by using fewer packets.
D. It addresses security vulnerabilities found in the original protocol
【单选题】
When users login to the Client less Ssl Vpn using https://209.165.201.2/test ,which group policy will be applied？___
A. test
B. clientless
C. sales
D. DfitGrp Policy
E. Default RAGroup
F. Default WEB VPN
G. roup
【单选题】
Which user authentication method is used when users login to the Clientless SSLVPN portal using https://209.165.201.2/test？___
A. AAA with LOCAL database
B. AAA with RADIUS server
C. Certificate
D. :Both Certificate and aaa with LoCAL database
E. Both Certificate and AAA with RADIUS server
【单选题】
What' s the technology that you can use to prevent non malicious program to runin the computer that is disconnected from the network？___
A. Firewall
B. Sofware Antivirus
C. Network IPS
D. Host IPS
【单选题】
Which statement about the communication between interfaces on the same security level is true？___
A. Interfaces on the same security level require additional configuration to permit interinterface communication
B. Configuring interfaces on the same security level can cause asymmetric routing
C. All traffic is allowed by default between interfaces on the same security level
D. You can configure only one interface on a n individual security level
【单选题】
Which product can be used to provide application layer protection for tcp port 25 traffic？___
A. ESA
B. CWS
C. WSA
D. ASA
【单选题】
which iPS mode is less secure than other options but allows optimal network through put ?___
A. inline mode
B. inline-bypass mode
C. transparent mode
D. Promiscuous mode
【单选题】
Which feature of the Cisco Email security Appliance can mitigate the impact of snowshoe spam and sophisticated phishing attack？___
A. reputation based filtering
B. signature based IPS
C. contextual analysis
D. graymail management and filtering
【单选题】
Which type of social-engineering attack uses normal tele phone service as the attack vector？___
A. smishing
B. dialing
C. phishing
D. vishing
【单选题】
Which quantifiable item should you consider when you organization adopts new technologies？___
A. exploits
B. vulnerability
C. threat
D. Risk
【单选题】
Referencing the ClA model， in which scenario is a hash- only function most appropriate ？___
A. securing data at rest
B. securing real-time traffic
C. securing data in files
D. securing wireless transmissions
【单选题】
Which ports must be open between a aaa server and a microsoft server to permit Active Directory authentications？___
A. 445 and 389
B. 888 and 3389
C. 636 and 4445
D. 363 and 983
【单选题】
Refer to the exhibit for which reason is the tunnel unable to pass traffic___
A. the tunnel is failing to receive traffic from the remote peer
B. the local peer is unable to encrypt the traffic
C. the ip address of the remote peer is incorrect
D. UDP port 500 is blocked
【单选题】
Which type of attack can exploit design flaws in the implementation of an application without___
A. DHCP starvation attacks
B. low-rate dos attacks
C. application DDos flood attacks
D. application DDoS flood attacks
E. volume-based DDoS attacks
【单选题】
How can you protect CDP from reconnaissance attacks？___
A. Enable dynamic ARP inspection on all untrusted ports.
B. Enable dot1x on all ports that are connected to other switches.
C.
D. isable CDP on ports connected to endpoints.
【单选题】
Which type of attack can exploit design flaws in the implementation of an application without ？___
A. DHCP starvation attacks
B. low-rate dos attacks
C. application DDos flood attacks
D. application DDoS flood attacks
E. volume-based DDoS attacks
【单选题】
Which option is a key security compone nt of and MDM deployment ？___
A. using network-specific installer packages
B. using an application tunnel by default
C. using self-signed certificates to validate the server
D. using MS-CHAPv2 as the primary
E. AP method
【单选题】
Which Firepower Management Center feature detects and block exploits and hack attempts？___
A. Content blocker
B. file control
C. intrusion prevention
D. advanced malware protection
【单选题】
hich description of the nonsecret numbers that are used to start a Diffie- Hellman exchange is ture？___
A. They are preconfigured prime integers.
B. They are large pseudorandom numbers.
C. They are very small numbers chosen from a table of known valuses
D. They are numeric values extracted from ha shed system hostnames
【多选题】
Which two characteristics of an application layer firewall are true？___
A. provides stateful firewal functionality
B. has low processor usage
C. provides protection for multiple applications
D. provides rever se proxy services
E. is immune to URL manipulation
【多选题】
Which two devices are components of the BYOD architectural framework？___
A. Nexus 7010 switch
B. Cisco 3945 Router
C. Identify Services Engine
D. Wireless Access oints
E. Prime Infrastructure
【多选题】
Which two actions can a zone based firewall take when looking at traffic？ ___
A. forward
B. inspect
C. drop
D. broadcast
E. filter
【多选题】
n which two situations should you use in-band management？___
A. when management applications need concurrent access to the device
B. when you require administrator access from multiple locations
C. when a network device fails to forward packets
D. when you require ROMMON access
E. when the control plane fails to respond
【多选题】
What are two ways to prevent eavesdropping when you perform device management tasks？___
A. Use an SSH connection.
B. Use SNMPv3
C. Use out-of-band management
D. Use SNMP
E. Use in-band management
【多选题】
Which two features are commonly used CoPP and CPPr to protect the control plane？ ___
A. QoS
B. traffic classification
C. access lists
D. policy maps
E. class maps
F. Cisco Express Forwarding
【多选题】
Which four tunne ling prot ocols are enabled in the Dfit GrpPolicy group policy ？___
A. Clientless SSL VPN
B. SSL VPN Client
C. PPTP
D. L2TP/IPsec
E. IPsec IKEv1
F. IPsec IKEv2
【多选题】
Which two statements regarding the aSA VPN configurations are correct？___
A. The asa has a certificate issued by an external certificate authority associated to the ASDM TrustPoint1
B. The Default WEBVPNGroup Connection Profile is using the aaa with RADIUS server method
C. The Inside-srvbook mark references the https://192.168.1.2url
D. Only Clientless SSL VPN access is allowed with the Sales group policy
E. Any Connect， IPSec IKEv1， and IPSec IKEv2 VPN access is enabled on the outside interface
F. The Inside -SRV bookmark has not been applied to the Sales group policy
【多选题】
Which three ESP fields can be encrypted during transmission？___
A. Security Parameter Index
B. Sequence Number
C. MAC Address
D. Padding
E. Pad length
F. Next Header
推荐试题
【单选题】
PA=-3, PB=（ ）时的功率利用率为100%。
【单选题】
当UE发现需要发起切换时，向eNB发起（ ）消息．将“切换请求”信息传递给eNB。
A. HandoverRequest
B. RRCConnectionRequest
C. ULInformationTransfer
D. MeasurementReport
【单选题】
NB-IoT不可以直接部署于以下哪种网络?（ ）
A. UMTS网络
B. GSM网络
C. FDD-LTE网络
D. TDD-LTE网络
【单选题】
NB-IoT终端同时最多支持（ ）个DRB。
【单选题】
话务量为0.025Erl,其含义是（ ）。
A. 一个信道每小时被占用2.5分钟
B. 一个信道每小时被占用15分钟
C. 一个信道每小时被占用25分钟
D. 一个信道每小时被占用1.5分钟
【单选题】
对于 90 度的方向性天线，它的含义是： （ ）
A. 天线覆盖范围是 90 度
B. 以上都不正确
C. 天线半功率角是 90 度
D. 天线安装方向为 90 度
【单选题】
下面不是造成“塔下黑”的原因的一项为（ ）
A. 站点过高
B. 下倾角过小
C. 天线规格不达标
D. 功率过高
【单选题】
当UE上报次数达到（ ）指定的次数时，即使测量量继续满足该事件的触发门限，UE也不再向eNB上报测量结果。
A. Amount of Reporting for event
B. Reporting interval for event
C. Reporting interval for periodical
D. A5 Threshold2 for RSR
【单选题】
在上行，1个0.5ms时隙中，对应于正常CP，第( )个块用于传送上行DM RS。
【单选题】
NB-IoT下行无线帧长为（ ）。
A. 10ms
B. 4ms
C. 40ms
D. 1ms
【单选题】
若某室内覆盖天线的功率为0dBm，则其对应的功率为（ ）。
A. 0W
B. 1mW
C. 10mW
D. 0mW
【单选题】
A1事件表示（ ）。
A. 服务小区质量高于门限
B. 邻接异RAT小区质量高于门限
C. 邻接异RAT小区质量低于门限
D. 服务小区质量低于门限
【单选题】
某个小区配置竞争前导码数量为48，GroupA前导码数量为28，则非竞争前导码数量为( )。
【单选题】
VoLTE的接通率统计信令节点为从主叫发起INVITE到主叫收到（ ）。
A. UPDATE 200
B. INVITE 200
C. ACK
D. RING 180
【单选题】
下列选项中，EPS中eNodeB与S-GW间的接口为( )。
A. X1
B. S1
C. S1-U
D. S1-MME
【单选题】
SPS调度可以应用在（ ）方向。
A. 仅上行
B. 仅上行和下行同时应用
C. 上行或下行或上下行同时应用
D. 仅下行
【单选题】
SIB1是除MIB外最重要的系统消息，固定以（ ）为周期重传4次。
A. 5ms
B. 20ms
C. 80ms
D. 10ms
【单选题】
一发射机发射功率为10W,天线增益10dB,馈线损耗5dB,则有效辐射功率为：（ ）
A. 15dBW
B. 5dBW
C. 25dBW
D. 10dBW
【单选题】
SIP协议最早起源于( )所制定的多媒体通信协议
A. IETF
B. ETSI
C. 3GPP
D. 3GPP2
【单选题】
SC-FDMA与OFDM相比的区别是：( )。
A. 能够简化系统实现
B. 没区别
C. 能够提高频谱效率
D. 能够降低峰均比
【单选题】
关于CIO（cellIndividualOffset），以下哪组参数的选择，更有利于解决A3切换的拐角效应问题( )。
A. 服务小区CIO = 3，邻区CIO = -3
B. 服务小区CIO = -3，邻区CIO = 3
C. 服务小区CIO = 3，邻区CIO=3
D. 服务小区CIO = -3，邻区CIO = -3
【单选题】
VoLTE测试中，HTC手机开启自动接听需要打开( )开关
A. Control Modem
B. Control Rmnet
C. Control Diag Port
D. Radio Auto Answer
【单选题】
NB-IoT协议栈新定义了什么？（ ）
A. MAC
B. RLC
C. PHY
D. PDCP
【单选题】
某地市FDD LTE网络商用后，请问怎样在网络侧统计终端成功响应Paging的次数( )。
A. 统计寻呼发出后，收到的UE RRC Connection Setup Complete的次数
B. 统计收到Service Request的次数
C. 统计收到Scheduling Request的次数
D. 统计终端发送测量报告的次数
【单选题】
EPS网络中，分配给用户的临时标识是( )。
A. GUTI
B. IMSI
C. MSISDN
D. P-TMSI
【单选题】
下行半静态调度的功控中，如果IBLER测量值小于IBLER Target，应该( )发射功率
【单选题】
TDLTE小区频带20MHZ，numberRBnotForSIB=82，则SIB4可能占用（ ）RB。
【单选题】
在测量报告消息中上报的RSRQresult = 3，表明RSRQ的实际值范围为（ ）。
A. -18.5 <= RSRQ < -18
B. -19 <= RSRQ < -18.5
C. -3 <= RSRQ
D. -3.5 <= RSRQ < -3
【单选题】
在频域上，随机接入前导占用个( )资源块对应的带宽。
【单选题】
TTI 技术是说绑定( )个 TTI 用于一个包的传输
【单选题】
下列哪个不是LTE切换技术特点？（ ）
A. 后向切换
B. 硬切换
C. 终端辅助切换
D. 软切换
【单选题】
定时器T302的作用是（ ）
A. UE监测到无线链路失败后转入RRC_IDLE状态的等待时间
B. UE监测无线链路失败的等待时间
C. UE收到RRC连接拒绝后等待RRC连接请求重试的定时器
D. UE等待因发起呼叫而等待RRC连接建立的定时器
【单选题】
上行HII和OI指示，下行RNTP指示是通过（ ）口在eNB间传递的。
【单选题】
LTE的DCI0信息中TPC=2表示：( )
A. PUSCH信道功率提升1dB
B. PUSCH信道功率降低1dB
C. PUCCH信道功率降低2dB
D. PUCCH信道功率提升2dB
【单选题】
对于VOIP而言，系统在20ms中可以调度的用户数是多少个？（ ）
A. 300
B. 80
C. 320
D. 40
【单选题】
LTE中，测量报告里显示邻区RSRP为47，那邻区的实际RSRP的值是（ ）dBm。
A. -83
B. -103
C. -93
D. -73
【单选题】
关于同频小区重选的说法错误的是（ ）。
A. UE在服务小区驻留超过1秒。
B. 在小区重选时间间隔TreselectionRAT内，满足R准则。
C. UE在服务小区驻留超过5秒。
D. 针对同频或同等优先级的小区，小区重选标准按R的大小形成的一个候选列表:Rs=Qmeas,s+QHyst,Rn=Qmeas,n-Qoffset,新的小区在候选列表中排在服务小区的前面。
【单选题】
下列（ ）过程不是NB-IoT连接挂起过程中的步骤。
A. 初始向下文响应
B. RRC连接挂起
C. 释放接入承载响应
D. S1-AP：UE上下文挂起响应
【单选题】
依据《中国电信移动通信网络运行维护 规程》的组织架构，移动通信网络的维护管理部门是（ ）。
A. 市场部
B. 网发部
C. 网运部
D. NOC
