2024年11月30日来源:信管网 作者:cnitpm
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网络工程师每日一练试题内容(2024/11/29)
试题1
在Linux系统通过( )命令,可以拒绝IP地址为192.168.0.2的远程主机登录到该服务器。查看答案
试题参考答案:C
试题解析与讨论:www.cnitpm.com/exam/ExamDay.aspx?t1=8&day=2024/11/29
试题2
在 Linux 系统中,使用 Apache 服务器时默认的 Web 根目录是( )。
A...\htdocs
B./var/www/html
C./var/www/usage
D...\con
查看答案
试题参考答案:B
试题解析与讨论:www.cnitpm.com/exam/ExamDay.aspx?t1=8&day=2024/11/29
试题3
实现VPN的关键技术主要有隧道技术、加解密技术、 (1) 和身份认证技术。如果需要在传输层实现VPN,可选的协议是 (2) 。
(1)A、入侵检测技术
B、病毒防治技术
C、安全审计技术
D、密钥管理技术
(2)A、L2TP
B、PPTP
C、TLS
D、IPSec
查看答案
试题参考答案:D、C
试题解析与讨论:www.cnitpm.com/exam/ExamDay.aspx?t1=8&day=2024/11/29
试题4
下列存储器类型中,掉电后所存储数据会丢失的是()。查看答案
试题参考答案:C
试题解析与讨论:www.cnitpm.com/exam/ExamDay.aspx?t1=8&day=2024/11/29
试题5
网络192.21.136.0/24 和192.21.143.0/24汇聚后的地址是( )。查看答案
试题参考答案:A
试题解析与讨论:www.cnitpm.com/exam/ExamDay.aspx?t1=8&day=2024/11/29
试题6
在ATM网络中,AAL5用于LAN仿真,以下有关AAL5的描述中不正确的是 ( ) 。
A、AAL5提供面向连接的服务
B、AAL5提供无连接的服务
C、AAL5提供可变比特率的服务
D、AAL5提供固定比特率的服务
查看答案
试题参考答案:D
试题解析与讨论:www.cnitpm.com/exam/ExamDay.aspx?t1=8&day=2024/11/29
试题7
在SNMP各项功能中属于网络控制功能的是 ( )。查看答案
试题参考答案:C
试题解析与讨论:www.cnitpm.com/exam/ExamDay.aspx?t1=8&day=2024/11/29
试题8
Network Addrees Translation(NAT) is an Internet standard that enables a local-area network to use one set of IP addresses for internet traffic and another set of ( ) IP addresses for external traffic. The main use of NAT is to limit the number of public IP addresses that an organization or company must use, for both economy and ( ) purposes. NAT remaps an IP address space into another by modifying network address information in the ( ) header of packets while they are in transit across a traffic routing device. It has become an essential tool in conserving global address space in the face of ( ) address exhaustion. When a packet traverses outside the local network, NAT converts the private IP address to a public IP address. If NAT runs out of public addresses,the packets will be dropped and ( )"host unreachable"packets will be sent.
(1) A. local
B. private
C. public
D. dynamic
(2) A. political
B. fairness
C. efficiency
D. security
(3) A.MAC
B. IP
C.TCP
D. UDP
(4) A. IPv4
B. IPv6
C. MAC
D. logical
(5) A. BGP
B. IGMP
C. ICMP
D. SNMP
查看答案
试题参考答案:C、D、B、A、C
试题解析与讨论:www.cnitpm.com/exam/ExamDay.aspx?t1=8&day=2024/11/29
试题9
ARP病毒通过()影响网络通信。查看答案
试题参考答案:C
试题解析与讨论:www.cnitpm.com/exam/ExamDay.aspx?t1=8&day=2024/11/29
试题10
If two communicating entities are in different hosts connected by a network,there is a risk that PDUs will not arrive inthe order inwhich theywere sent , becausethey may traverse(70)paths through the network. If each PDUs is given a uniquenumber,andnumbersareassigned(71),thenit isa logicallysimpletaskforthereceivingentityto reorder(72 )PDUsonthebasisofsequence number.Aproblem with this scheme is that,with a(73)sequence number field, sequence number will repeat.Evidently , the maximumsequence numbermustbe(74)thanthemaximumnumber ofPDUsthatcouldbe outstandingat anytime.查看答案
试题参考答案:B、D、A、C、B
试题解析与讨论:www.cnitpm.com/exam/ExamDay.aspx?t1=8&day=2024/11/29
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